東亜グラウト工業 List of Products and Services

Live streaming of our booth at the "Sewage Exhibition '22 Tokyo," one of the largest exhibitions in Japan related to sewage systems! You can watch the archive on the YouTube channel below. Watch the video here! https://www.toa-g.co.jp/event/ ◇ To become a 100-year company in a rapidly changing era ◇ <Speakers> 　Hiroyuki Kato, Specially Appointed Associate Professor, The University of Tokyo 　Norio Yamaguchi, President and CEO, Toa Grout Industry Co., Ltd. ◇ Sports × Co-creation ◇ <Speakers> 　Seiya Sakakawa, President and CEO, VC Nagano Create Sports, Inc. 　Makoto Minato, Executive Officer, Toa Grout Industry Co., Ltd. ◇ Interview with 2022 Miss Nippon "Angel of Water" ◇ <Speakers> 　Rina Yokoyama, 2022 Miss Nippon "Angel of Water" 　Young Employee, Planning Department, Pipeline Group, Toa Grout Industry Co., Ltd. ◇ Ice Pigging Pipe Cleaning Method Demonstration ◇ ◇ Engineer Explanation ◇

• Sewerage facilities
• Water Supply Facilities
• Pipeline Construction

■Heat Recovery from Sewage■ Did you know that heat can be recovered and utilized from sewage, which includes wastewater from washing dishes and bathwater? The temperature of sewage flowing through sewer pipes is said to be between 10 and 20°C throughout the year, making it more stable compared to outside temperatures. This temperature difference between the outside air and sewage is used as a heat source for air conditioning, hot water supply, and snow melting. Sewage heat is a safe and clean energy source that can be expected to reduce fossil fuel usage and provide energy-saving benefits. ■2021 New Energy Award Winner■ The method of utilizing the temperature difference in sewage has been recognized as an innovative approach for promoting its use, especially as it can be implemented during the renewal of aging sewer pipes. As a result, it received the 2021 New Energy Award, specifically the "Chairman's Award of the New Energy Foundation [Implementation Activity Category]."

• Sewerage facilities
• Civil Engineering Method
• Other resource recycling

Toa Grout Industry is developing social infrastructure and maintenance projects centered around three pillars: "Pipeline Maintenance Business," "Ground Improvement and Structure Maintenance Business," and "Slope Disaster Prevention Business." We have been engaged in the maintenance and repair of sewer pipelines for a long time, making it one of our core businesses. Our job is akin to that of a doctor, as we find and fix the problems in sewer pipelines. We offer a wide range of solutions for the maintenance and management of sewer pipelines with our abundant variety of construction methods. ◆ "Doctor of the Pipeline" ◆ We are showcasing our diverse technologies at our online booth. Investigation and Diagnosis ▶ 'Camera Inspection System' for investigating sewer mainlines Pipeline Cleaning ▶ 'Ice Pigging Method' for long-distance cleaning of all pressurized pipelines at once Pipeline Rehabilitation ▶ 'Light Curing Method' for trenchless rehabilitation of main pipelines using light curing Seismic Reinforcement ▶ 'Magma Rock Method' for seismic reinforcement of sewer pipe outlets and mainline joints without excavation Sewer Heat Utilization ▶ 'Heat Liner Method' for an in-pipe sewer heat recovery system

• Sewerage facilities
• Renovation and repair methods
• Earthquake-resistant construction method

On November 8, Toa Grout Industry has registered with the Japan Anniversary Association to officially designate this day as "A Day to Reflect on Water Circulation." [Origin of the Date] The date November 8 is represented by 11 (ii) and 8 (kan). The "8" is envisioned as two vertically aligned water supply and sewage pipes, while horizontally (∞ infinity) it symbolizes the circulation of water. [Thoughts Behind This Commemoration] The reason our company considered registering this day as "A Day to Reflect on Water Circulation" is driven by a strong desire to show respect to the industry professionals who work tirelessly behind the scenes, rather than for our own publicity. We hope to take a moment once a year for everyone to reflect on "water circulation," express gratitude towards industry stakeholders, and reaffirm our commitment to creating a safe and secure water circulation system that protects safe living conditions.

• Sewerage facilities
• Civil Engineering Method

The SUPERJET method involves cutting the ground by horizontally injecting ultra-high-pressure solidifying material accompanied by air from a rotating double-pipe rod, while simultaneously discharging slime to the surface and creating large-diameter cylindrical improvement bodies. 【Applications】 ● Improvement of the base during excavation and pre-placed underground beams ● Prevention of subsidence in newly constructed roads ● Shield launch and arrival protection ● Reinforcement of tunnels ● Strengthening of water-stopping in gaps of retaining walls ● Liquefaction countermeasures 【Features】 ● Capable of accommodating a wide range of soil types. Four types can be set with maximum effective diameters of Ø2.5m, Ø3.5m, Ø5.0m, and Ø6.0m to meet construction purposes and conditions. ● Excellent adhesion to retaining walls and structures. ● Achieves high-speed construction by utilizing powerful energy. ● Uses cement-based solidifying materials, providing excellent durability. ● By cutting the same location twice with one rotation, it allows for good mixing and stirring, resulting in high-quality improvement bodies.

• Ground improvement

The X-JET method involves cutting the ground by horizontally injecting ultra-high-pressure water mixed with air from a rotating triple-pipe rod, while simultaneously filling it with hardening material and discharging slime to the surface, thereby creating a cylindrical improved body of a certain diameter. 【Applications】 ● Improvement of the base during excavation / Pre-embedded underground beams ● Prevention of subsidence in newly constructed roads ● Shield launch and arrival protection ● Reinforcement of tunnels ● Water stop reinforcement for gaps in retaining walls ● Liquefaction countermeasures 【Features】 ● A consistent cylindrical diameter can be expected for any type of soil. ● Three types are set to accommodate construction purposes and conditions: Ø1.5m, Ø2.0m, and Ø2.5m. ● Excellent adhesion to retaining walls and structures. ● Cutting is performed with two intersecting jets, allowing for superior mixing and the creation of high-quality improved bodies. ● Using cement-based hardening materials ensures excellent durability.

• Ground improvement
• Tunnel construction

The CJG method involves cutting the ground by injecting ultra-high-pressure water mixed with air laterally from a rotating triple-pipe rod, while simultaneously filling with hardening material and discharging slime to the surface, thereby creating a cylindrical improved body. 【Applications】 ● Improvement of the base during excavation / Pre-embedded underground beams ● Prevention of subsidence for newly constructed roads ● Shield launch and arrival protection ● Reinforcement of tunnels ● Water stop reinforcement for gaps in earth retention work 【Features】 ● Capable of construction depths of over 25 meters and applicable to a wide range of soil types. ● Can achieve a maximum improvement diameter of 2.0 meters with a small drilling diameter. ● Excellent adhesion to earth retention walls and structures. ● Compact working equipment, offering excellent workability. ● Uses cement-based hardening materials, providing superior durability.

• Ground improvement

The JSG method involves cutting the ground by injecting a super high-pressure curing material liquid, accompanied by air, laterally from a rotating double-tube rod, while simultaneously discharging slime to the surface and creating a cylindrical improved body. 【Applications】 ● Improvement of the base during excavation / Pre-embedded underground beams ● Prevention of subsidence for newly constructed roads ● Shield launch and arrival protection ● Reinforcement of tunnels ● Strengthening of water-stopping in missing sections of earth retention work

• Ground improvement

This is a method for filling repair materials into concrete that has been damaged due to corrosion expansion of internal rebar or cracking caused by alkali-silica reaction. In some cases, wire mesh may be inserted to prevent the re-adhesion of the repair material. 【Applications】 ● Deteriorated areas of concrete structures. 【Features】 It is suitable for relatively small areas of approximately 1.0 m². It is appropriate when the construction locations are scattered. It can be applied in upward, horizontal, and downward directions. It is feasible in narrow spaces due to manual labor.

• Concrete construction
• Tunnel construction

The Expakka method is an abbreviation for the Expand Packer method. This method allows for the formation of a soil packer larger than the drilling diameter by expanding a geo-bag in the ground, thereby securing a large columnar permeation source between the upper and lower soil packers. This enables a larger spacing between drill holes and allows for extensive injection through low-pressure permeation between soil particles with a large discharge volume. [Applications] ● Reinforcement and liquefaction countermeasures directly beneath structures ● Seismic strengthening of foundations ● Base improvement associated with excavation work ● Construction of impermeable walls for tank foundations ● Prevention of suction and reinforcement of riverbanks ● Reinforcement associated with tunnel excavation work ● Reinforcement of missing sections of underground diaphragm walls

• Ground improvement

The sleeve injection method is a double packer technique that separates the installation of injection pipes from the injection work. It is suitable for large-scale construction projects or cases where high effectiveness is required, as well as for deep construction projects, and can also be applied for liquefaction countermeasures. 【Applications】 ● Stabilization of the bottom slab and backfill of the shaft (waterproofing and strength increase) ● Protection of soil retention deficiencies ● Stabilization of the face of shield or thrusting ● Prevention of loosening in the route section of shield or thrusting ● Stabilization of the backfill and bottom slab of deep foundations (waterproofing and strength increase) ● Liquefaction countermeasures 【Features】 ● Covers almost all target ground areas. It is most effective against hard, unconsolidated ground where other methods cannot be applied. ● By using injection materials with a long gel time, low-speed and low-pressure injection is possible, allowing for reliable permeation injection even in fine sand layers. ● The external injection pipe is left underground, enabling re-injection at necessary locations even after the initial injection. ● A complete packer can be created with seal grout, completely preventing the escape of injection material from around the injection pipe. ● There is very little ground deformation, and the impact on nearby structures is also minimal.

• Ground improvement

This construction method is based on performing primary injection using a double-tube injection rod at each step to inject a quick-setting gel time while preventing diffusion beyond the specified area, followed by secondary injection to inject a slow-setting gel time to achieve uniform penetration into the voids between soil particles, thereby forming a homogeneous improved ground. 【Applications】 ● Stabilization of the bottom slab and backfill of the shaft (waterproofing and increased strength) ● Protection of soil retention deficiencies ● Stabilization of the face of shield tunneling or thrusting ● Prevention of loosening in the route section of shield tunneling or thrusting ● Stabilization of the backfill and bottom slab of deep foundations (waterproofing and increased strength) 【Features】 ● It hardens to a moderate firmness, so it does not interfere with excavation. ● The machinery is compact, allowing for construction in narrow areas. ● It can be applied freely in any direction, 360 degrees. ● There is minimal industrial waste, enabling environmentally friendly construction. ● It can be applied to all types of ground (especially effective for sandy soils). ● It generates little vibration and noise.

• Ground improvement

This is a method for repairing cracks aimed at suppressing the intrusion of carbon dioxide, chloride ions, water, and other factors that cause corrosion and deterioration of steel materials within concrete, as well as restoring the integrity of cracked concrete. There are three types: crack covering method, crack injection method, and crack filling method, which are applied according to the occurrence conditions such as crack width and the purpose of repair. 【Applications】 ● Cracked areas on the surface of concrete structures.

• Concrete construction
• Tunnel Materials

This is a protective structure designed to shield facilities from high-speed projectiles caused by typhoons, tornadoes, etc. Full-scale experiments simulating tornado projectiles have been conducted to verify its performance. 【Applications】 ● Protection of critical facilities such as nuclear power plants 【Features】 ● The net made of high-strength steel wire is designed with a structural configuration that allows for deformation. ● It uses nets with varying mesh sizes, capable of accommodating projectiles with thin tips.

• Protective fence

This construction method absorbs the impact of anchor head protrusion in the event of breakage due to forces exceeding expectations or aging, ensuring the safety of social infrastructure such as human life and road traffic. By covering the ABOXX main body with the anchor head, protrusion is prevented. The capture performance of the anchor head has been verified through full-scale experiments and numerical analyses based on these experiments, capable of handling a maximum protrusion energy of 64 kJ. 【Applications】 ● Measures against protrusion of existing anchors that may be aging or at risk of ground deformation. 【Features】 ● The ABOXX main body is pre-assembled and lightweight, making installation easy. ● It can be constructed in a short period without the need for skilled workers. ● As it absorbs energy while deforming, it can reduce the force acting on the frame anchor for shock-absorbing components (spring brakes). ● Four types of combinations with different component configurations are available according to the design energy.

• Slope protection material
• Other civil engineering works

NETIS Registration Number AC-180003-P The spider web net method is a ground reinforcement technique that suppresses relatively light sliding forces by combining a corrosion-resistant high-strength hard steel wire net (TECCO net) with pressure plates and reinforcement materials. It does not require concrete placement and allows for greening. It excels in aesthetics while also reducing costs. [Applications] - Prevention of surface collapse on slopes - Prevention of voids between reinforcement materials - Measures against collapse of existing sprayed surfaces and retaining walls [Features] - The TECCO net is stretched over the entire slope, combined with spider plates and reinforcement materials to prevent voids in collapsing soil masses. - Greening and other measures can be used in conjunction with the entire slope, creating an environment where artificial structures are less noticeable. - Since assembly of rebar and concrete placement on the slope is unnecessary, construction management is easier, construction periods are shortened, and costs are reduced. - Even if the ground has irregularities, the TECCO net is soft and conforms to the ground, and when used in conjunction with the zabuton backing method, the spider plates can also adhere closely to the ground.

• Slope protection material
• Other civil engineering works

This is an avalanche prevention fence designed to eliminate or minimize the risk of avalanches. Its net structure allows for flexible response to snow pressure and achieves lightweight components. Additionally, it is constructed in a way that does not stand out from a distance and takes the landscape into consideration. 【Applications】 ● Protection of roads and residences from avalanches ● Avalanche measures in areas where landscape preservation is necessary ● Avalanche measures in areas where rockfall protection is also needed (up to 500 kJ) 【Features】 ● Can accommodate snow depths of approximately 5.0 meters (varies depending on slope and snow conditions). ● Capable of handling rockfall energy of up to 500 kJ while preventing avalanches. ● Design methods are established based on snow pressure observation results. ● Has a structure that can flexibly adapt to undulating terrain. ● Since it is primarily installed on natural slopes, excavation and concrete are unnecessary, and the machinery used is lightweight, allowing for excellent workability and short construction periods. ● Highly permeable, minimizing the impact on the landscape and natural environment around the installation site.

• Protective fence
• Other civil engineering works

This is a protective fence developed based on the technology of ring net rockfall protection fences, designed to capture collapsing soil and rocks as a countermeasure against landslides. It is a countermeasure that reduces impact force or captures soil and rocks using an impact barrier in locations where reinforcing or installing retaining walls is difficult. 【Applications】 ● Protection of roads, railways, private homes, and public facilities ● Capture of soil and rocks flowing out due to rainfall and other factors 【Features】 ● The foundational technology of ring net rockfall protection fences has been applied and improved to create a structure suitable for capturing soil and rocks. ● It complies with the Sediment Disaster Prevention Act and can withstand impact forces from collapsing soil of up to 150 kN/m². It is also stable against accumulated soil pressure. ● Lightweight materials are used, allowing installation in steep slopes and narrow areas where it is difficult to install retaining walls. ● Full-scale experiments have been conducted to confirm the performance of capturing collapsing soil and rocks.

• Protective fence
• Erosion control works
• Other civil engineering works

This is a rockfall protection net designed to absorb the impact force of large-scale rockfalls at the upper part of steep slopes and guide the falling rocks down to the ground within the net. By using high-strength nets and impact-absorbing components, it expands the scale of rockfall protection up to a maximum of 1,000 kJ compared to conventional methods, making it a high-energy rockfall guiding protection structure. 【Applications】 ● Protection for roads, railways, private homes, public facilities, etc. 【Features】 ● You can choose from three types (HGN-300, 550, 1000) according to the energy to be addressed. ● All three types have specifications determined based on full-scale experiments. ● The use of high-strength nets prevents the net from being breached. ● It is suitable for rockfall measures on steep slopes where it is difficult to install protective fences.

• Slope protection material
• Other civil engineering works

The TXI rockfall protection fence efficiently absorbs rockfall energy of up to 100 kJ using high-strength nets and impact-absorbing components (brake rings) attached to wire ropes. It is the smallest type in the ring net rockfall protection fence series. 【Applications】 ● Protection for roads, railways, private homes, public facilities, etc. 【Features】 ● The performance of the protection fence has been verified through full-scale experiments. ● It can be installed without regard to location, whether on a retaining wall or mid-slope. ● Maintenance has been improved by adopting easily detachable replacement ropes.

• Protective fence
• Other civil engineering works

This is a rockfall protection fence construction method that enables the absorption of high energy up to 3,000 kJ, using a special wire mesh woven in a ring shape (ring net), shock-absorbing components (brake rings) incorporated into the support ropes that suspend the ring net, and wire rope anchors connecting from the top of the support to the ground. 【Applications】 ● Protection for roads, railways, residential areas, public facilities, etc. 【Features】 ● You can choose from six types (RX-025, 075, 100, 150, 200, 300) according to the target energy. ● It is a highly reliable construction method that has obtained construction technology review certification. ● It uses lightweight fence components and has fewer constraints related to the terrain and geological conditions at the installation site, allowing for installation on steep slopes without changing the slope shape. ● It minimizes the amount of tree cutting, and since there is no excavation or concrete pouring on the slope, it reduces the impact on the natural environment and harmonizes with the environment. ● The components that undergo plastic deformation have established replacement criteria, allowing for appropriate maintenance and management after rockfall capture.

• Protective fence
• Other civil engineering works

This is a rockfall protection system with reinforced posts that can absorb rockfall energy up to 500 kJ and has a small fence deformation during rockfall impacts. The fence deformation is less than 2.0 m (1.34 m in full-scale tests), making it most effective in narrow locations such as alongside roads and railway tracks. 【Applications】 ● Rockfall measures in narrow installation areas ● Rockfall measures alongside roads and railway tracks 【Features】 ● The fence deformation is less than 2.0 m, so it does not encroach on construction limits. ● By rigidly connecting the upper chord and posts, low deformation is achieved. ● The performance of the protective fence has been verified through full-scale testing. ● Rockfall energy is absorbed by the balanced arrangement of impact-absorbing components (U-brakes) utilizing the bending deformation of steel, and high toughness and high strength posts made by combining H-beams and steel pipes. ● Each span has an independent structure, allowing for maintenance and repairs within a limited area. ● It can be installed directly on retaining walls or on the ground.

• Protective fence
• Other civil engineering works

The TF barrier can be installed on both new and existing structures and can withstand rockfall energy of up to 200 kJ. Since it is designed not to impose a load on the structure, it is possible to address the aging of existing structures, insufficient rockfall capture performance, and inadequate fence height without the need for removal or reinforcement of existing structures. 【Applications】 ● Protection for roads, railways, etc. ● Resolution of insufficient fence height on existing structures ● Resolution of insufficient rockfall capture performance on existing structures 【Features】 ● The support posts are in a 'knee' shape, making installation on structures easy. ● It can accommodate various types of existing structures, such as gravity retaining walls and block retaining walls. ● With two types of special shock-absorbing devices, it is designed to avoid imposing loads on the structure. ● By using two types of nets with different mesh sizes, it enhances the penetration resistance against rockfall. ● Performance has been verified through full-scale experiments.

• Protective fence
• Other civil engineering works

Install in the slits of existing slit embankments and improve slit functionality by reducing the opening size. 【Purpose】 ● Prevent the outflow of sediment from slit embankments during debris flow events. 【Features】 ● Uses hard steel wire nets employed in high-energy absorption rockfall protection works. ● Components are lightweight, and the ring net panels are separable, allowing for manual transportation. ● Components are treated for corrosion resistance, making installation possible even in environments prone to rust.

• Erosion control works
• Protective fence
• Embankment

This is a flexible structural method that can absorb significant impact energy by deforming the brake rings of the ring net and energy absorption device during debris flow loading. 【Applications】 ● It can be used as an emergency measure aimed at protecting human life immediately after a debris flow disaster (as a temporary safety measure until the completion of sediment control dams related to disaster emergency projects). ● It can be used for safety measures from the start to the completion of sediment control works. 【Features】 ● The components are lightweight, making transportation and installation easy, resulting in a shorter construction period. ● Installation can be completed in a short time. ● The back of the structure is transparent, minimizing visual discomfort and being environmentally friendly. ● If no debris flow occurs, many structural components can be repurposed for other sites.

• Protective fence
• Erosion control works

This is a flexible structural construction method that can be used as a temporary structure, capable of absorbing significant impact energy through the deformation of the ring net and the brake ring of the energy absorption device when subjected to debris flow loads. 【Applications】 ● It can be installed upstream of sediment control construction sites to temporarily capture debris flows, thereby buying time for the evacuation of on-site workers and ensuring their safety. 【Features】 ● The lightweight components make transportation and installation easy, resulting in a shorter construction period. ● Installation can be completed in a short time. ● The back of the structure is transparent, minimizing visual disruption to the landscape and being environmentally friendly. ● If no debris flow occurs, many structural components can be repurposed for other sites.

• Protective fence
• Erosion control works
• Other civil engineering works

The Anshin Manhole VD Method is a technique that suppresses the floating of manholes caused by liquefaction phenomena through drainage and vibration functions. After installing a drain equipped with a filter and excess pore water pressure dissipation device at the low base of the manhole, a vibration machine is fixed inside the manhole to vibrate the manhole structure, thereby enhancing the resistance to floating by compacting the surrounding ground. 【Applications】 ● Seismic reinforcement of existing manholes 【Features】 ● Non-excavation: It is possible to drill from inside the manhole to the bottom without drawing in groundwater or soil, allowing for the installation of filters. ● Maintenance-free: By drawing water from the bottom of the manhole against the buoyancy generated by liquefaction, it efficiently suppresses excess pore water pressure. ● It is safe as it is maintenance-free even if excess pore water pressure occurs due to aftershocks. ● Ground improvement through vibration: By vibrating the manhole body and compacting the surrounding ground, ground improvement is achieved.

• Sewerage facilities

This is a perforation technology that uses a specialized perforation robot to remove foreign objects, tree roots, mortar adhesion, protruding pipes, and other obstacles that hinder the installation of rehabilitated pipes or impede flow, as part of the pre-treatment for pipe rehabilitation, in addition to the perforation and finishing of the installation pipes after rehabilitation. 【Applications】 ● Perforation of installation pipes connected to the inner surface ● Treatment of areas that cannot be accessed due to main pipe misalignment ● Work with only one side access point ● As a perforation machine for pipe manufacturing on the manhole side ● Application to power conduits and others 【Features】 ● A compact perforation machine that does not require a dedicated cutter vehicle. ● Capable of perforating installation pipes after 200 pipe rehabilitation works. ● With a variety of bits available, it allows for quick perforation of installation pipe openings in pipe rehabilitation methods. ● The installation of a dedicated mechanism enables smoother perforation before and after.

• Sewerage facilities

This is a pipe rehabilitation method classified as a sheath pipe method, which involves inserting a corrosion-resistant rehabilitation pipe into existing large-diameter sewer pipes using a push (jacking) device to construct a new pipe. 【Applications】 ● Reconstruction and extension of the lifespan of aging or damaged sewer pipes (Ø800 to 2000) ● Strength restoration ● Improvement of water-tightness against infiltration, flow characteristics, corrosion resistance, prevention of root intrusion, and seismic resistance ● When it is necessary to maximize the flow cross-section inside the pipe 【Features】 ● It is a self-supporting pipe method that achieves the necessary strength against soil water pressure with the rehabilitation pipe alone. ● Construction can be carried out without stopping sewer service (at depths of 30 cm or less), making it suitable for large-diameter main lines where water replacement is difficult. ● Being a jacking method, it maximizes the flow cross-section inside the pipe (by adopting a thin-walled structure of the back pipe, it secures a flow cross-sectional area equivalent to or greater than a pipe one size smaller than the existing pipe). ● The back RC pipe, made of thin-walled RC structure with high-strength concrete, has a strength exceeding the standard breaking load of JSWAS A-1 (Type 1). Additionally, the back FPRM pipe, made of reinforced plastic composite structure, has strength equivalent to JSWAS K-2 standards.

• Sewerage facilities

This is a rehabilitation method classified as a small-diameter casing pipe method, where a compressible tubular elastic material primarily made of polyester non-woven fabric is pulled into the existing pipe and expanded using air pressure. A rigid polyvinyl chloride pipe with self-supporting performance and screw joints, manufactured in a factory, is then pushed in using a hydraulic jack for rehabilitation. The small-diameter casing pipe method faces challenges in securing a gap with the existing pipe due to the need to maintain the flow cross-section within the sewer pipe. This technology ensures more stable quality by using FM materials, which are factory-made secondary products, instead of conventional filling materials, and eliminates the curing period required during the filling material installation, thus achieving reduced construction time and improved workability. [Applications] ● Reconstruction and extension of the lifespan of aging or damaged sewer pipes (Ø250 to 450) ● Strength restoration ● Improvement of water tightness against infiltration, enhancement of flow characteristics, corrosion resistance, prevention of tree root intrusion, and increased seismic resistance.

• Sewerage facilities

It is a rehabilitation material made of thermoplastic resin and glass fibers, which becomes a rehabilitation pipe by melting the resin with heat and impregnating it. By varying the amount of fibers, it is possible to adjust the thickness and strength. This technology uses appropriate fiber materials to manufacture pipes on-site while rehabilitating, representing an ideal conceptual technology and a groundbreaking idea that has not existed before. 【Applications】 ● Reconstruction and extension of the lifespan of aging or damaged sewer pipes (Ø100 to 600) ● Restoration of strength ● Improvement of water-tightness against infiltrating water, enhancement of flow characteristics, improvement of corrosion resistance, prevention of tree root intrusion, and enhancement of seismic resistance 【Features】 ● By changing raw materials such as polypropylene and polyvinyl chloride, it is possible to rehabilitate non-standard pipes. ● The thickness and strength of the rehabilitation pipe can be freely set by varying the weaving thickness of the fiber bundles. ● The rehabilitation material is a fabric, making it easy to insert into manholes. ● The thermoplastic resin melts quickly by being made into a fibrous form. ● There are no joints or steps as the fibers melt and form the rehabilitation pipe. ● Since it handles fibrous materials, it is less likely to undergo chemical reactions at room temperature, allowing for long-term storage. ● It can accommodate pressure pipelines.

• Sewerage facilities

By conducting a preliminary survey using a TV camera before rehabilitating the pipeline, it is possible to identify steps, deflections, and surface cracks within the pipe, allowing for the selection of appropriate construction methods. Applicable pipe types: Reinforced concrete pipes, ceramic pipes, PVC pipes, FRPM pipes, steel pipes, polyethylene pipes Applicable pipe diameter: Ø150 and above Construction length: Up to approximately 100m 【Applications】 ● Visual inspection of small-diameter pipelines ● Diagnosis of pipeline aging ● Records before and after pipeline rehabilitation work ● Verification of inconsistencies with management ledgers 【Features】 ● Recording the condition inside the pipe makes it easy to create documentation. ● The equipment is designed to be assembled on-site, making maintenance, storage, and transportation easy. ● The survey conducted by the machine allows for the acquisition of highly accurate data. ● Surveys can be conducted via remote control.

• Sewerage facilities

This method involves applying a solvent-free epoxy resin mortar with anti-corrosive properties to concrete structures for water stopping (adhesive reinforcement type water stopping work), corrosion prevention (coating type lining work), reinforcement (reinforcement lining work), and seismic reinforcement of manholes, using manual labor without machinery. Although there are slight differences in the surface preparation methods and layering processes for each purpose, all methods utilize a crystal lining material that has the property of adhering and curing even underwater. 【Applications】 ● Water stopping, corrosion prevention, and reinforcement for sewer facilities (treatment plants, pipes, manholes, etc.) ● Seismic reinforcement of manholes ● Corrosion prevention for walls and floors in food factories ● Painting and repair of drinking water facilities (such as water storage tanks) ● Prevention of deterioration in reinforced concrete ● Use as a reinforcement material for concrete ● Other general civil engineering and construction applications

• Sewerage facilities

The Magma Lock method, developed for the seismic reinforcement of pipe joint sections, demonstrates water-tight performance capable of withstanding disconnection due to level 2 seismic motion. This method involves pre-cutting grooves (joints) at the connection between the main pipe and the manhole, installing the Magma Lock, and concentrating seismic stress at this point to induce cracking in the joint. The shock absorption effect helps prevent damage to the connection. In areas where cracks occur along the joint, the pre-installed Magma Lock prevents the inflow of groundwater and soil into the pipe. Additionally, this seismic reinforcement method can be reliably installed even when the existing pipe is in a flowing state, as long as the water depth is 25% or less of the pipe diameter (maximum water level of 40 cm), targeting the connection between the manhole and the pipe. 【Applications】 ● Seismic reinforcement of the connection between manholes and pipes (circular pipes).

• Sewerage facilities

This is a non-excavation seismic reinforcement method developed to enhance the seismic resistance of the "pipe connection section where existing pipes and manholes connect," targeting pipe diameters of Ø700 or less. In cases where the connection between the manhole and the pipe does not have a flexible structure, it is known that this connection section, being in a semi-rigid state, tends to concentrate damage such as circumferential cracks or breakage when subjected to significant loads during an earthquake. This method involves pre-cutting grooves (joints) at the connection between the main pipe and the manhole, installing a mini magma, and concentrating seismic stress here to induce cracking at the joint, thereby preventing damage to the connection through its shock absorption effect. The mini magma, which is pre-installed at the locations where cracks occur along the joint, prevents the inflow of groundwater and soil into the pipe. Additionally, this seismic reinforcement method can be reliably installed even when the existing pipe is in a flowing state, as long as the water depth is 25% or less of the nominal diameter, targeting the connection between the manhole and the pipe. [Applications] ● Seismic reinforcement of the connection between manholes and pipes (circular pipes)

• Sewerage facilities

This is a non-excavation seismic reinforcement method developed with the aim of converting manhole joints that do not have seismic resistance into a seismic structure in a short period of time. It has water-tight performance that can withstand external water pressure of 0.1 MPa even if joint opening occurs during a level 2 earthquake, and has continuously obtained construction technology review certification from the Japan Sewage Works Agency since 2005. Additionally, by applying and installing it to manhole joints, it is also effective as a countermeasure method when loads equivalent to level 2 earthquake motions act in the lateral direction of the manhole blocks. [Applications] ● Seismic reinforcement of manhole joints

• Sewerage facilities

This is a non-excavation repair method for stopping inflow water and leakage points occurring in medium to large diameter pipes with a diameter of Ø800mm or more. The three-part stainless steel sleeve can be securely installed and fixed using a small dedicated hydraulic jack, allowing for reliable construction even in flowing conditions. It forms a rigid integrated ring, demonstrating high water-stopping performance, even in large cross-sections. For pipe diameters of Ø3100 or more, a four-part system is used. 【Applications】 ● Repair of pipes (circular pipes) 【Features】 ● Excellent water-stopping performance: By expanding and fixing the stainless steel sleeve, the rubber sleeve's water-stopping mechanism is compressed and installed against the inner surface of the pipe, providing high water-tight performance. ● Excellent durability: The factory-produced stainless steel and rubber sleeves have stable quality and do not deteriorate when exposed to water during construction. After installation, they exhibit long-term durability against aging and chemical substances contained in sewage. ● Excellent workability: Construction is possible even in flowing conditions with a water level of 25% of the pipe diameter (or below 40cm from the knee). ● Easy traceability: All components are stamped with identification numbers, making post-construction traceability easy.

• Sewerage facilities

The FRP internal reinforcement method (light curing) is a technique for partially repairing unevenness, pipe wear, joint misalignment, cracks, and other issues that occur in sewer pipelines. The repair material is attached to the construction machine and is introduced from a nearby existing manhole, then transported to the targeted defective area. Next, the repair material is pressurized and adhered to the pipe wall, and by using a heater or ultraviolet lamp built into the construction machine for thermal curing or light curing, a high-strength FRP pipe is formed. [Applications] ● Extending the lifespan of aging or damaged sewer systems, agricultural water, industrial water pipes, etc. ● When repairs are desired only for specific areas rather than the entire span. ● When the differences between sound and deteriorated sections can be managed. ● When costs need to be kept as low as possible.

• Sewerage facilities

The removal of the upper part of the manhole is carried out by connecting the "Manhole Remover" (manhole frame removal device) developed for the MR2 method to a hydraulic power source, operating the horizontal and vertical cylinders to "shear" the pavement slab using the manhole iron frame and the lower frame. To eliminate the occurrence of shear marks, a shallow cutting groove is made along the construction diameter. Additionally, the restoration material for the upper part of the manhole is restored using "MR2 Mortar" and "Pavement Restoration Material," which were specifically developed for the MR2 method. 【Applications】 ● Repair work for aging or damaged manhole covers and frames (hereinafter referred to as "upper part of the manhole"). 【Features】 ● Low noise and low vibration: The removal of the upper part of the manhole using the Manhole Remover (dedicated construction machine) is a low-noise and low-vibration operation, making it safe for nighttime and residential area construction. ● Short time, space-saving, and low cost: Significant reduction in working time and minimization of repair area lead to cost savings. ● Quality assurance: High quality is ensured through construction with dedicated equipment and materials. ● Environmental consideration: Minimization of the repair area helps to reduce the amount of construction by-products generated. ● Aesthetic finish: The use of a circular cutter achieves a clean construction result.

• Sewerage facilities

An environmentally friendly polyethylene liner serves as a corrosion-resistant membrane. This technology produces less noise during work since it does not require large equipment. Additionally, it does not use harmful organic solvents, providing a healthy environment for workers. 【Applications】 ● Reconstruction and extension of the lifespan of aging or damaged manholes 【Features】 ● The factory-produced liner is processed into a complete single piece, ensuring very stable quality. ● Being a finished product, it can be safely stored until actual construction takes place. ● It can be postponed in case of adverse weather or if construction must be delayed. ● It has extremely high acid resistance against acids specific to wastewater environments generated by aerobic bacteria. ● Work can be carried out even during wastewater use by using special packers.

• Sewerage facilities

This is a new repair method developed in collaboration with the Japan Sewerage New Technology Organization (a public interest incorporated foundation) as a measure against the aging of sewer pipes, ensuring long-term durability. In aging pipes where damage is often localized to only a part of the span, this method allows for the targeted reconstruction of deteriorated areas, efficiently addressing aging issues. 【Features】 ● The water-stopping performance has been verified for 20 years through long-term performance testing. ● It ensures adaptability to changes in pipe shape (bending and deflection) due to earthquakes and ground movement. ● Partial construction is possible, equivalent to one piece of a Hume pipe. 【Applications】 ● Reconstruction and extension of the lifespan of aging or damaged sewer pipes (Ø200 to 600) ● Improvement of water-stopping performance in deteriorated areas ● Enhancement of seismic resistance

• Sewerage facilities

The Bertiliner method is a technique for rehabilitating concrete that has been corroded by hydrogen sulfide and aging manholes using FRP rehabilitation materials. This method consists of FRP rehabilitation materials, a load-bearing ring, and supporting mortar, and the live loads and superimposed loads acting on the manhole are transmitted from the load-bearing ring through the FRP rehabilitation material and then through the supporting mortar to the base slab. Additionally, by using acid-resistant glass fibers and light-curing resins in the rehabilitation material, high-strength rehabilitated manholes can be formed in a short time. The thickness of the FRP rehabilitation material can be designed according to site conditions, allowing for the selection of efficient rehabilitation materials. **Features** - Self-supporting, not relying on the strength of existing manholes - Overwhelmingly fast construction - Integrated rehabilitation of sloped and vertical walls - Complies with seismic levels 1 and 2 **Applications** - Reconstruction and extension of the lifespan of aging or damaged manholes - Types: Prefabricated and cast-in-place - Shapes: Circular Φ900, Φ1000 - Manhole depth: 5m

• Sewerage facilities

The seamless system construction method allows for the rehabilitation of existing main pipes, service pipes, and service pipe joints, enabling a strong integration rehabilitation of the main and service pipes. Additionally, the rehabilitated pipes use light-curing resin that hardens reliably when exposed to light (ultraviolet), providing performance equivalent to new pipes. It can accommodate main pipes with diameters ranging from Ø200 to 800 mm (self-supporting pipes from Ø200 to 600 mm). There are two types available: standard and fast-curing. **Features** - Uniform and reliable curing of rehabilitated pipes made possible by light. - The evolved seamless system leads the way in pipe rehabilitation. - Protecting the sewer system that has supported comfortable living for many years. - Aging pipes that have exceeded their useful life are increasing, particularly in urban areas. - Aging sewer pipes can cause leaks and unknown inflow of water in various locations, potentially leading to road collapses. The door to the era of pipe rehabilitation has already been opened. - Rehabilitation of sewer pipes is carried out reliably and swiftly. - By exposing to light (ultraviolet), a uniform, reliable, and seamless rehabilitated pipeline is achieved. **Applications** - Reconstruction and prolongation of the lifespan of aging or damaged sewer pipes.

• Sewerage facilities

This construction method rehabilitates damaged installation pipes without excavation. It uses a cylindrical acid-resistant glass fiber fabric impregnated with light (ultraviolet) curable resin (vinyl ester) in the factory, covered with a light-blocking film after special air degassing, to create an FRP installation pipe liner (BBG). This FRP installation pipe liner (BBG) is mounted on a storage drum of a dedicated construction machine and is inverted or pushed into the existing pipe from the manhole. Compressed air is sent into the liner to expand it, and a light curing device (UV train) is inserted into the liner. After confirming the presence or absence of abnormalities inside the liner with a TV camera attached to the tip, the UV lamp is turned on, and the UV train is pulled at a specified speed from the main pipe side, curing the liner with light to form a strong FRP pipe.

• Sewerage facilities

A rigid polyvinyl chloride pipe with shape memory performance, pre-folded into a ω shape at the factory, is pulled into the existing pipe and restored to a circular shape by heating with steam. It is then closely adhered to the existing pipe using compressed air to construct a strong self-supporting pipe. Since the liner material is a polyvinyl chloride pipe with shape memory performance, there are no chemical reactions on-site, allowing for safe construction. **Features** - Short construction time (restores to a circular shape quickly with just heating). - Consistent quality due to factory production. (Manufactured at a factory certified by the Japan Sewage Works Association and registered as Class II materials) - High seismic resistance recognized through construction technology review certification for compatibility with existing pipes. - Rehabilitates as a self-supporting PVC pipe with excellent strength, durability, corrosion resistance, and hydraulic properties. - Enables shortening of construction periods and cost reduction. - A safe construction method that does not use organic solvents, eliminating concerns about odors or fire hazards. - Follows the bends and steps of existing pipes without wrinkles, allowing for rehabilitation of only the installation pipe. **Applications** - Reconstruction and extension of the lifespan of aging or damaged sewer pipes (Ø150 to 450) - Strength restoration - Improvement of water-tightness against infiltrating water, flow characteristics, corrosion resistance, prevention of root intrusion, and seismic resistance.

• Sewerage facilities