丸栄コンクリート工業 List of Products and Services

**Features** - It allows for easy transportation and installation in locations where truck cranes cannot be used, such as under elevated roads and railways, under power lines, or in areas where temporary roads cannot be constructed. - As a self-propelled device that does not require special guides for the foundation concrete, it can be used for construction in curved sections and at bends. - It can accommodate slope construction in the longitudinal direction up to 10% (5% for lift rollers), and it is also capable of handling drop sections. - Concrete products are transported to the installation site, and adjustments in the vertical and horizontal directions are made using hydraulic cylinders, allowing for precise positioning. - The lift rollers are electric, resulting in low noise and low vibration, minimizing impact on the surrounding area. - In locations where tree removal would be necessary for crane construction, it can be installed without cutting down trees, demonstrating consideration for the natural environment. - It can widely accommodate products such as box culverts, three-sided ditches, L-shaped ditches, inverted T-shaped products, and slabs. - We offer "hanging type" (internal suspension) and "side type" (external suspension) options to suit site conditions. *For more details, please download the PDF or feel free to contact us.*

In this catalog, we introduce various products handled by our company. In 1925, Tanahashi Shoten was established in Hashima City, Gifu Prefecture, as a manufacturer and contractor of cement tiles. For nearly a century since our founding, we have been pioneering new fields, primarily focusing on "U-shaped prefabricated waterways" through the creation of various products. Without forgetting our origins, we will continue to take new strides toward the next stage. 【Contents (partial)】 ■ Box culverts / Large box culverts ■ Retaining walls ■ Storage ■ Waterways ■ Ditches *For more details, please refer to the PDF document or feel free to contact us.

This catalog introduces the "methods" employed by Maruei Concrete Industry. It features the "Lift Roller Method," which allows for easy transportation and installation even in places where truck cranes cannot be used, as well as the "Arm Roller Method" and the "Jack-Up Roller Method." Additionally, landscape products are introduced using photographs. [Contents (partial)] ■ Lift Roller Method ■ Arm Roller Method ■ Jack-Up Roller Method ■ PC Vertical Tightening Connection Method ■ Open Shield Method *For more details, please refer to the PDF document or feel free to contact us.

We introduce the 'Lift Roller Method PAT.' which allows for easy transportation and installation in places where truck cranes cannot be used, such as under elevated roads and railways, under power lines, or in areas where temporary roads cannot be constructed. Since it is a self-propelled device that does not require special guides for the foundation concrete, it can be used for construction in curved sections and at bends. The lift roller is electric, resulting in low noise and low vibration, with no impact on the surrounding area. 【Features】 - Can accommodate slope construction in the longitudinal direction up to 10%, and can also handle drop sections (with some exceptions for specific models). - Adjustments in the vertical and horizontal directions are made using hydraulic cylinders, allowing for precise positioning. - Widely compatible with products such as box culverts, three-sided ditches, and L-shaped ditches. - Available in "Hanging type" (internal suspension) and "Side type" (external suspension) to suit site conditions. *For more details, please refer to the PDF document or feel free to contact us.

Introducing the "Arm Roller Method," which can be constructed with minimal girder reinforcement. The total mass of the equipment, including the counterweight, is less than one-third of that of a 70-ton rough terrain crane. While minimizing assembly work on-site, it is possible to load and transport the equipment using a 10-ton truck. The left and right wheels are independently driven in the forward and backward directions, allowing the equipment to pivot on the spot. 【Features】 - Recipient of the National Land Technology Development Award, Creative Development Technology Award - Can be constructed with minimal girder reinforcement compared to crane construction - Allows for loading and transporting the equipment using a 10-ton truck - The left and right arms are connected by square steel pipes, enabling the widening of the arm spacing - Capable of accommodating the installation of wide floor slabs - The left and right wheels are independently driven in the forward and backward directions, allowing the equipment to pivot on the spot 【NETIS】KK-220073-A https://www.maruei-con.co.jp/netis/kk220073.htm *For more details, please refer to the PDF document or feel free to contact us.

The "Jack-Up Roller Method" is a construction method that can be used when it is not possible to secure space for the lift roller starting section or when the construction extension is short. It allows for the transportation of concrete secondary products to the installation site and enables precise positioning through vertical and horizontal fine adjustments using jacks. It can accommodate products such as box culverts and three-sided water channels weighing up to 40 tons. 【Features】 - A construction method that can be used when it is not possible to secure space for the lift roller starting section or when the construction extension is short. - Enables precise positioning through vertical and horizontal fine adjustments using jacks. - Can accommodate products such as box culverts and three-sided water channels weighing up to 40 tons. *For more details, please refer to the PDF document or feel free to contact us.

The "PC Vertical Tension Connection Method" involves creating through holes at the four corners of box culverts and connecting them vertically using PC steel materials. For vertical connections when using angled box culverts in curved sections, high-strength bolts are employed. This method is highly effective when there is a need to ensure water tightness or when there are significant changes in soil cover. 【Features】 - A method that creates through holes at the four corners of box culverts and connects them vertically using PC steel materials. - Highly effective when there is a need to ensure water tightness or when there are significant changes in soil cover. *For more details, please refer to the PDF materials or feel free to contact us.*

The "Open Shield Method" is a construction method that serves as an alternative to traditional open-cut and shield methods, used for burying structures such as conduits underground. It allows for construction on sharp curves and close to buildings, with minimal noise and vibration. Additionally, it can be implemented in soft ground and aquifers, and the upper part of the shield can be opened. 【Features】 ■ A construction method that replaces traditional open-cut and shield methods ■ A method for burying structures such as conduits underground ■ Capable of sharp curve construction and close proximity to buildings, with low noise and vibration ■ Small construction width results in less construction waste, considering the environment *For more details, please refer to the PDF materials or feel free to contact us.

The "OSJ Method" is an open-cut pipe installation method that continuously and repeatedly performs a series of tasks from excavation to backfilling. By adopting a hydraulic mechanism, it operates with no vibration and no noise. Since backfilling is done immediately after excavation, the work area is short, allowing for quick traffic reopening and minimizing the impact on residents' lives. Additionally, it can be applied to various soil conditions and only requires work in front of and behind the OSJ machine, eliminating the need for a work zone on the sides, making it possible to work in narrow spaces. 【Features】 ■ Continuously and repeatedly performs a series of tasks from excavation to backfilling ■ No vibration and no noise due to the adoption of a hydraulic mechanism ■ The opening is only where the OSJ machine is located, ensuring high safety for pedestrians and residents ■ The daily progress is about twice that of conventional methods, allowing for speedy work *For more details, please refer to the PDF materials or feel free to contact us.

We would like to introduce the 'TSKJ Method', which allows for the construction of flexible and economically efficient joints with excellent water-stopping performance. Since flexibility can be ensured at each joint of the product, it is capable of absorbing ground displacement (maximum ground strain of 1.5%). Due to the ability to select joint rubber according to usage conditions, it is highly economical and demonstrates flexibility and water-stopping performance even in areas affected by salt damage or in cold regions. 【Features】 ■ Capable of constructing flexible and economically efficient joints with excellent water-stopping performance ■ Able to absorb ground displacement (maximum ground strain of 1.5%) ■ Highly economical due to the ability to select joint rubber according to usage conditions ■ Demonstrates flexibility and water-stopping performance even in areas affected by salt damage or in cold regions ■ Usable for various products such as box culverts and large flumes *For more details, please refer to the PDF document or feel free to contact us.

We would like to introduce the "Flexible Joint Rubber Method," which can be applied to connections with joint trenches, culverts, underground passages, waterways, manholes, and pipes. The base material is polymer, using weather-resistant chloroprene rubber. It improves water pressure resistance, reduces the weight of the product, and prevents internal swelling, without compromising the internal cross-section. 【Features】 ■ Uses weather-resistant chloroprene rubber as the base material. ■ By laminating a special nylon woven fabric as a reinforcing core material in the center: - Water pressure resistance is improved, and the product's weight is reduced. - Internal swelling is prevented, and it does not compromise the internal cross-section. - Even if surface damage occurs, it is possible to minimize damage at the reinforcing core material. ■ Applications include connections with joint trenches, culverts, underground passages, waterways, manholes, and pipes. *For more details, please refer to the PDF document or feel free to contact us.

"Tough J" is a construction method that is strong against live loads and soft ground at all times, preventing pipe bending and, during earthquakes, absorbing the load on pipe joints caused by ground displacement, ensuring the safety of pipe functions. With tension washers, it has the function of preventing longitudinal bending of pipes under normal conditions and following longitudinal bending deformation during earthquakes. Additionally, it absorbs displacement by collapsing under a certain load, preventing excessive stress on bolts and maintaining the integrity of the joint function. 【Features】 ■ Adopted in the sewer pipe rehabilitation method "RPC method," which has obtained technical review certification from the Japan Sewerage New Technology Organization (public interest incorporated foundation). ■ As a seismic connection joint, it allows for a maximum pull-out of 5mm in the consideration of earthquake level 2. ■ Prevents pipe disconnection and maintains the meandering slope of the pipeline, fulfilling the function of maintaining the flow path. *For more details, please refer to the PDF materials or feel free to contact us.

We would like to introduce our "Water Stop Construction Method." The "Mortar Method" is a simple technique that involves filling the joint area of the product with mortar. It is also possible to create a double layer on the inside and outside. Other methods include the "Butyl Rubber Method" and the "Water-Swellable Rubber Method," which can be selected according to the application. 【Types of Methods】 ■ Mortar Method ■ Butyl Rubber Method ■ Water-Swellable Rubber Method ■ Sealing Method ■ TSKJ Method ■ Flexible Joint Method *For more details, please refer to the PDF materials or feel free to contact us.

The "PC Cube" is a precast concrete elevator shaft developed for retrofitting elevators in mid- to low-rise residential buildings, schools, and train stations. The construction method involves stacking factory-produced precast concrete components on-site and joining them with PC steel rods, resulting in excellent construction time and durability. 【Features】 ■ Precast concrete shaft construction method ■ Safe and secure structural design ■ Significant reduction in construction time ■ Excellent durability and fire resistance ■ Can be constructed using only internal scaffolding *For more details, please refer to the PDF document or feel free to contact us.

"Chloroguard" can significantly improve salt damage resistance when added, and it allows for the selection of formulations based on the required concrete cover, enabling low-cost salt damage countermeasures. It can maintain fresh properties until pouring. It is suitable for structures used in coastal areas and those where freeze prevention agents are applied. [Features] - Improved resistance to chloride ion penetration - Increased compressive strength - Reduced drying shrinkage - Enhanced freeze-thaw resistance *For more details, please refer to the PDF document or feel free to contact us.

The polymer cement used in conventional methods has the weakness of being prone to cracking. In contrast, "Tough Mortar Lining" has excellent crack resistance due to the incorporation of a large amount of special fibers, which reduces the occurrence of cracks such as those caused by drying shrinkage. It employs the water jet method as a surface treatment technique, and because it contains a large amount of fibers, it suppresses damage and deterioration associated with freeze-thaw cycles due to the crosslinking effect. 【Features】 ■ Excellent crack resistance ■ Extends the lifespan of on-site concrete ■ Has more than twice the wear resistance compared to other materials ■ Adopts the water jet method as a surface treatment technique *For more details, please refer to the related link page or feel free to contact us.

We would like to introduce our "Landscape Products <Examples of Natural Materials>." We have a wide variety of natural stones and materials, including "Awaji," "Shiro Awaji," and "Naruto Tamagari Aoi." We have construction achievements such as "Mikage Stone Paving / L-shaped Retaining Wall," "Teppei Stone Paving / L-shaped Retaining Wall," and "Ise Gorota Stone Paving / L-shaped Waterway." 【Natural Stones and Materials (Partial)】 ■ Teppei Stone ■ Shiro Mikage ■ Shiro Tama ■ Ise Gorota ■ Nachi Stone *For more details, please refer to the related link page or feel free to contact us.

Here are some examples of landscape products we handle. Starting with "Split Stone / Atrock Panel," we also install "Rib Pattern / Exterior Panel" and "Pebble Paving / L-Shaped Water Channel." Additionally, "Slate Paving" has been successfully installed using Natural Panels and Atrock Panels. 【Examples of Installation】 ■ Split Stone / Atrock Panel ■ Rib Pattern / Exterior Panel ■ Slate Paving / Natural Panel ■ Slate Paving / Atrock Panel ■ Granite Paving / L-Shaped Water Channel ■ Pebble Paving / L-Shaped Water Channel *For more details, please refer to the related links page or feel free to contact us.

We would like to introduce our company's "Landscape Products <Examples of Relief Products>." We have a wide variety of relief samples available, including "Geostone MD-104," "Split Stone MD-103," and "Hand-Carved Border MD-306." We have a track record of installations, including "Mild Stone / Relief L-shaped Retaining Wall," "Grid Stone / Relief L-shaped Retaining Wall," and "Log Pattern / Relief L-shaped Water Channel." 【Relief Samples (Partial)】 ■MD-102: Grid Stone (Pattern Thickness 15mm) ■MD-104: Geostone (Pattern Thickness 15mm) ■MD-103: Split Stone (Pattern Thickness 35mm) ■MD-160: Mild Stone (Pattern Thickness 35mm) *For more details, please refer to the PDF document or feel free to contact us.

**Features** 1. Lightweight construction machinery The total weight of the equipment, including counterweights, is less than one-third that of a 70t rough terrain crane. Minor girder reinforcement allows for construction compared to crane installation. 2. Compact erection machine While minimizing assembly work on site, it is possible to load and transport the equipment on a 10t truck. 3. Independently operating left and right frames The left and right arms are connected by square steel pipes, allowing for an increased arm spacing, which can accommodate the erection of wider floor slabs. 4. 360-degree rotation function The left and right wheels are independently driven in the forward and backward directions, enabling the erection machine to rotate in place. 5. Selected as a recommended technology for the 6th year of Reiwa under NETIS Chosen as a groundbreaking new technology to further enhance the standards of technology related to public works, it has been selected as a recommended technology for the 6th year of Reiwa. It is eligible for additional points in the comprehensive evaluation method and construction performance assessment. **[NETIS] KK-220073-A** https://www.maruei-con.co.jp/netis/kk220073.htm *For more details, please refer to the PDF document or feel free to contact us.*