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

This is a reconstruction promotion method that crushes and expands old pipes while pushing in new pipes of the same diameter or one rank up. A hydraulic-operated expander (diameter-expanding crusher) is inserted into the existing pipe, and new pipes are pushed into the void created by the diameter expansion and crushing, allowing for a non-excavation and soil-free construction method that is friendly to both cities and people. **Features** - Replacement with new pipes of the same diameter or larger at the same position as the existing pipes, improving flow performance. - Since the method expands and crushes the existing pipes from the inside without excavation, there is no generation of excavated soil or industrial waste. - Analysis confirms that there is no significant ground deformation affecting the surrounding soil. - It can adapt to step differences and bends at the joint sections, allowing for the replacement of deformed PVC pipes and similar with new pipes. - The use of concrete pipes, PVC pipes, and resin concrete pipes for new installations ensures high quality and durability. **Applications** - Reconstruction and extension of aging or damaged sewer pipes (Ø150–Ø600). - Strength restoration. - Improvement of water-tightness against infiltration, flow performance, corrosion resistance, and prevention of tree root intrusion. - When there is a desire to secure a larger flow capacity than the existing pipes. - When considering the replacement of existing pipes but wanting to control disposal costs.

• Sewerage facilities

The existing pipe is fitted with rigid PVC material in a spiral manner while manufacturing the rehabilitation pipe, and a special backfill material is filled in the gap between the existing pipe and the rehabilitation pipe. This revitalizes the old pipeline into a strong composite pipe that integrates the existing pipe and the backfill material of the rehabilitation pipe. 【Features】 ● The self-propelled pipe manufacturing method allows for the rehabilitation of various pipe shapes, including circular, rectangular, and horseshoe shapes. ● Construction can be carried out while allowing water flow, eliminating the need for temporary drainage within the main pipe. ● Non-excavation means there is minimal impact on traffic and social life. ● There are no restrictions on the pipe manufacturing distance, enabling long-distance pipe production. ● It can accommodate curved construction and can be installed with a slope. ● The flow capacity is equal to or greater than the design flow rate before rehabilitation. ● The rehabilitation pipe is excellent in durability, wear resistance, and chemical resistance. ● Seismic retrofitting of pipeline facilities is possible. ● Work can be suspended even during pipe manufacturing in the event of sudden heavy rainfall. 【Applications】 ● Reconstruction and extension of the lifespan of aging or damaged sewer pipes (Ø250 to 5000) ● Strength restoration ● Improvement of water tightness against inflow, flowability, corrosion resistance, prevention of tree root intrusion, and seismic resistance enhancement ● Setting of pipe slope (rehabilitation pipe Ø800mm and above)

• Sewerage facilities

This system is an initiative to recycle the resources and energy generated at wastewater treatment plants for the cultivation of plants in greenhouses installed around the treatment facility. By utilizing carbon dioxide recovered from digester gas and wastewater heat, the system controls the temperature, humidity, and carbon dioxide concentration inside the greenhouse, providing optimal environmental conditions for plant production. This establishes low-cost and high-efficiency agricultural production, contributing to the realization of a circular society. This is a collaborative research technology developed by Nagaoka University of Technology, Sekisui Chemical Co., Ltd., Ohara Iron Works Co., Ltd., Takasago Thermal Engineering Co., Ltd., and Toa Grout Industry Co., Ltd. **Features** - By providing carbon dioxide and temperature, the productivity of food increases by 33%. - It allows for the effective use of land that has become idle around the wastewater treatment plant. - It can enhance the image of municipalities through environmental burden reduction activities. - Systematic plant factory production that is not affected by weather conditions becomes possible. **Applications** - Effective utilization of resources and energy generated at wastewater treatment plants. - Employment measures utilizing green spaces and agricultural land around wastewater treatment plants. - Expansion into agricultural businesses in collaboration with local communities. - Utilizing the characteristics of energy-independent treatment plants as a regional disaster prevention base.

• Sewerage facilities

"Emergency Measures for Underground Structures (Water Leakage and Delamination)" is a method for addressing water leakage from joints and cracks in concrete structures, which can be broadly categorized into water stopping methods and water guiding methods. We quickly propose appropriate responses based on the condition of the structure assessed during site investigations. We also specialize in short nighttime work within operational lines, such as subways. We respond swiftly to water leakage and delamination within underground structures. Please feel free to contact us when needed. 【Water Stopping Method Features】 ■ A method that involves drilling to block the water leakage path at the leaking joint or crack, followed by injecting water stopping material under high pressure to seal the water path. ■ Can be applied to fine cracks. ■ Uses an electric pump that is compact and easy to transport. ■ Applicable in narrow spaces. 【Applications】 ■ Water leakage from concrete structures.

• Waterproofing work
• others

NETIS Registration Number AC-150011-P Construction Technology Examination Certification Number No. 1401 This method stabilizes the surface layer, including bedrock, using a highly durable high-strength net. It is the latest slope stabilization method that combines a high-strength net with a nail (deformed steel bar) boasting a wire strength of 1770 N/mm². By fully utilizing the mechanical properties of the high-strength net, slope stabilization can be achieved safely and within a short construction period. 【Applications】 - Measures against surface collapse of slopes - Measures against collapse of existing sprayed surfaces and retaining walls - Stabilization of unstable rock masses 【Features】 - The structure covers the unstable surface layer of the slope entirely with a high-strength net and secures it with nails. - The high-strength net has both strength and flexibility, available in two types: TECCO net with a wire structure and SPIDER S3 net. - The two types of high-strength nets can be selected according to the geological conditions and unevenness of the slope surface, allowing for adaptability to various slopes. - By applying tightening force, the spacing between reinforcement materials can be widened, leading to cost reduction.

• Other civil engineering works
• Civil Engineering Method
• Earthquake-resistant construction method

The "Ring Net Rockfall Protection Fence - RXE Type" is a slope-mounted rockfall protection fence capable of handling rockfall energy up to 3,000 KI. While leveraging the advantages of the conventional Ring Net Rockfall Protection Fence (RX Type), this improved version minimizes deformation and allows selection from four types based on the target energy. By incorporating new components that were not present in the RX Type, its applicability to snow accumulation has increased, and the reduced number of cushioning devices has made parts replacement even easier. 【Applications】 ● Protection for roads, railways, private homes, public facilities, etc. 【Features】 ● Capable of handling rockfall energy up to 3,000 KI ● Slope-mounted ● Selectable from four types based on the target energy (RXE-500, 1000, 2000, 3000) ● Fewer cushioning devices make parts replacement even easier

• Protective fence
• Road construction
• Railway Construction

This is a non-excavation repair method designed to prevent the infiltration of water (leakage) from joints and cracks in pipes with a diameter of Ø700mm or less. By expanding and securing a cylindrical repair component made of a stainless steel sleeve and a rubber sleeve, the water-stopping structure provided in the rubber sleeve is installed in a compressed state against the inner surface of the pipe, ensuring a reliable watertight effect. 【Applications】 ● Repair of pipes (circular pipes) 【Features】 ● Excellent water-stopping performance: By expanding and securing the stainless steel sleeve, the water-stopping mechanism of the rubber sleeve is compressed against the inner surface of the pipe, demonstrating high watertight performance. ● Superior durability: The factory-produced stainless steel and rubber sleeves have stable quality and do not deteriorate even when exposed to water during installation. After installation, they exhibit long-term durability against aging and chemical substances contained in sewage. ● Excellent workability: If the water level is below the level where the TV camera is submerged, installation can be performed even in a flowing state. ● Easy tracking and investigation: All components have identification numbers engraved, making post-installation tracking and traceability easy.

• Waterproofing work

The "Magma Rock Method" is a seismic retrofitting technique that improves existing sewer facilities without seismic structures to a seismic-resistant structure in a short time and without excavation. 【Target Pipe Diameter】 ■ Magma Rock Method: φ800mm to φ3500mm 【Features】 ■ Magma Rock Method - Joint of the pipe - Flexibly follows horizontal and bending displacements caused by earthquakes, maintaining water tightness. Depending on the intended use and target pipe diameter, it is classified into types such as "Magma Rock Method NGJ," "Magma Rock Method mini NGJ," and "Magma Rock Method for Manholes." *For more details, please refer to the related link page or feel free to contact us.

• Earthquake-resistant construction method
• Vibration isolation, vibration control, and earthquake resistance construction
• Sewerage facilities

The "Alpha Liner H Method" is a pipe rehabilitation method that can reliably restore aging sewer pipes without excavation. It uses acid-resistant glass fiber and light-curing resin as rehabilitation materials, allowing for the speedy construction of high-strength FRP pipes in a short time. Additionally, self-supporting pipes with a nominal diameter of 900mm can also be constructed. The construction procedure involves pulling the rehabilitation material into the existing pipe from a manhole, attaching specialized fixtures to the upstream and downstream ends, and expanding the diameter using air pressure. The material is closely adhered to the inner surface of the existing pipe, and the inserted light-curing device irradiates light to cure the resin, forming a rehabilitated pipe with the required strength and durability. 【Features】 - Compatible with self-supporting pipes with nominal diameters from 150mm to 900mm - Materials can be stored for up to 3 months - Shape confirmation can be done before curing - Not affected by environmental temperature (suitable for construction in cold regions) - Can be constructed even with inflow water present 【Other Features】 - Adapts to the existing pipe's shape - Can be applied to PVC pipes 【Applicable Pipe Types】 - Rigid PVC pipes, reinforced concrete, ceramic pipes, steel pipes, cast iron pipes, etc. *For more details, please refer to the related link page or feel free to contact us.

• Special Construction Method
• Sewerage facilities
• Renovation and repair methods

The "Ice Pigging Pipe Cleaning Method" is a revolutionary pipe cleaning technique that uses a special ice slurry to scrape off deposits and contaminants from the pipe walls, allowing for discharge outside the pipe without damaging it or causing blockages. The slurry-like ice pig can easily follow bends and changes in pipe diameter, ensuring stable cleaning without the risk of clogs. Additionally, the special ice slurry is made from water and salt, making it environmentally friendly and harmless to humans. [Applications] ● Removal of accumulated dirt that causes a decrease in water flow rate ● Removal of dirt that leads to the generation of hydrogen sulfide, which causes internal corrosion ● Removal of peeling and floating seal coats in aging water pipes ● Removal of organic matter and biofilms that cause water quality deterioration and chlorine consumption ● Removal of manganese and red rust that cause colored water issues ● Cleaning of complex piping shapes with bends, different diameters, and horizontal sections.

• Renovation and repair methods

The "Smart Ball System" is a system that detects "leak location identification" and "leak volume estimation." A smart ball equipped with various devices moves through the pipe due to water flow, recording the conditions inside the pipe with acoustic data and waveforms. Additionally, the tracking device of the smart ball allows for real-time tracking and recording of the smart ball's position within the pipe, integrating the data for confirmation. [Applications] ● Investigation of pipelines that require inspection under continuous water flow ● Investigation of pipelines where ground or external noise is a concern ● Investigation in areas where excavation is impossible, such as under roadways or buildings ● When wanting to inspect pipelines including water bridges, crossings, and vertical pipes all at once ● When wanting to investigate not only leaks but also air pockets

• maintenance
• Other construction services
• Sewerage facilities

The pipeline buoyancy prevention measures involve injecting a chemical solution (hardener) into the soil surrounding existing underground pipes to prevent the buoyancy of these pipes caused by liquefaction during an earthquake. Our company has established a grout injection design method that demonstrates high effectiveness with minimal construction through various experiments, including model tests and vibration tests, in collaboration with the Agricultural Research Organization's Rural Engineering Research Department. 【Applications】 ● Prevention of buoyancy of buried pipes due to ground liquefaction during earthquakes. ● Liquefaction countermeasures at construction sites where excavation is difficult. 【Features】 ● Construction can be performed without excavation. ● The range of ground improvement is minimized. ● By injecting the material at a low discharge rate (2-6 liters/min), it can be reliably permeated into the backfill soil surrounding the buried pipes. ● The spacing between the improved bodies is sufficient to adequately relieve the pore water pressure acting on the improved bodies and buried pipes. ● Using long-lasting injection materials ensures high quality is maintained for at least a decade.

• Special Construction Method
• Pipeline Construction
• Agricultural civil engineering works

The "Heat Liner Method" is a technology that effectively utilizes the thermal energy of sewage, which has a stable temperature compared to outside air, for air conditioning, hot water supply, floor heating, and snow melting. Simultaneously with the rehabilitation of aging pipes, a heat exchange tube installed at the bottom of the pipe circulates antifreeze to transport heat to facilities for use as a heat source. In an era of aging infrastructure where sewer pipes constructed during the period of rapid economic growth are reaching their renewal phase, this technology realizes the effective utilization of untapped energy alongside the rehabilitation of sewer pipes. 【Features】 - Heat extraction is possible from small to medium diameter sewer pipes (less than Ø800mm). - The heat exchange mat is located at the bottom of the pipe, allowing for stable heat extraction. - Cost savings can be achieved by simultaneous construction with pipe rehabilitation. - There is no obstruction to flow, and perforation of the installation pipe is possible. - The heat extraction section is designed to not come into direct contact with sewage, eliminating any odors. - Once installed, thermal energy can be utilized permanently (with a lifespan similar to that of sewer pipes, approximately 50 years). - It can be applied not only for air conditioning and hot water supply but also for water heaters, baths, floor heating, and snow melting (road heating and roof snow melting). 【Applications】 - Utilization of sewage thermal energy for air conditioning, hot water supply, snow melting, etc.

• Housing structure technology/long-term superior housing technology
• Sewerage facilities