ASAHI KASEI ADVANCE CORPORATION List of Products and Services

"Conback" is a construction method that involves installing a wire mesh panel with a bag body set in place, and then pouring concrete into it to create blocks. Since the pouring is done after installation, it can be executed even in sites where large machinery like cranes cannot be used. This method can reduce construction time and costs, especially in foundation work for bridge piers. The assembly of the wire mesh panel and the setting of the bag body are also simple, making it highly efficient for construction. 【Main Features】 ■ Not restricted by the construction site ■ Easier and lower cost compared to traditional block methods and stone covering methods ■ Integration of installation and pouring shortens construction time ■ During underwater pouring, the use of additives helps suppress cement runoff *For more details, please refer to the catalog. Feel free to contact us with any inquiries.

The "River Bent Method" consists of two layers: a waterproof layer and a greening layer. The waterproof layer is formed by bentonite mixed soil filled within a mat (fabric formwork). This utilizes the water absorption and swelling (expansion) properties of bentonite. The volume expansion of the bentonite mixed soil itself is suppressed by the bag-like mat, allowing the bentonite to close off the voids (water paths) between soil particles, resulting in excellent waterproof performance of the mat. After laying the mat, spraying the surface with vegetation allows for the formation of a multi-natural revetment with excellent flow velocity resistance. 【Features】 ■ Excellent workability and cost-effectiveness - Since it is a mat filled with bentonite mixed soil, there is no need for the installation of heavy materials (concrete secondary products), which improves construction efficiency, shortens the process, and enhances cost-effectiveness. ■ Consideration for the environment - By not using concrete secondary products or large machinery, CO2 emissions can be reduced, helping to mitigate the impact on the global environment. For more details, please contact us.

This is a site-cast anchoring block method where wire mesh panels made of U-shaped processed galvanized iron wire are assembled on-site into a box shape, a bag made of synthetic fiber sheet is set inside, and concrete is poured into it after installation at the construction site. 【Features】 ○ Cost reduction ○ Shortened construction period For more details, please contact us or download the catalog.

"Conback" is a site-cast block method designed for purposes such as stabilizing bridge piers, protecting bridge piers, and providing pier protection. It has been developed by applying our company's bag body processing and injection technology. This block method involves setting a bag made of synthetic fiber sheet onto a wire mesh panel and pouring concrete inside it. By adding a water-resistant concrete admixture to the poured concrete, it helps to suppress the outflow of cement and other materials, thus preventing water pollution. Additionally, by placing an impermeable sheet inside the bag, it is also possible to completely prevent the outflow of cement and other materials. 【Features】 ○ Cost Reduction - Since Conback can be manufactured on-site, it significantly reduces costs compared to other block methods and stone coverings. ○ Shortened Construction Period - The integration of Conback manufacturing and installation allows for a reduction in construction time. ○ No Restrictions on Construction Location - After installing Conback, concrete can be poured without the need for large cranes, thus not being restricted by the construction location. ○ Easy to Install - It is simple to set up synthetic fiber sheets on semi-finished rebar or wire mesh panels and assemble them. For more details, please contact us.

Solcomat is a block mat designed for slope protection and erosion prevention. It is a block mat where uniquely shaped concrete blocks (Solco blocks) are adhered and fixed to a filter cloth made from high-strength synthetic fibers using adhesive. The Asahi Kasei Group has been working on its development and dissemination in collaboration with block manufacturing partners nationwide since 1972, achieving many results in rivers, waterways, and ponds. Solcomat complies with the block mat specifications outlined in the "Basic Policy for Disaster Recovery to Protect Beautiful Mountains and Rivers" (National Disaster Prevention Association) C table. [Features] - Labor-saving and shortened construction period - Factory production and short delivery times For more details, please contact us or download the catalog.

"Sorcomat (Block Mat)" is a block mat designed for slope protection and erosion prevention. It consists of a filter cloth made from high-strength synthetic fibers, onto which uniquely shaped concrete blocks (Sorco Blocks) are adhered using adhesive. Our company has been working with block manufacturing partners nationwide to develop and promote this product, achieving many successful applications in rivers, waterways, and ponds. Sorcomat conforms to the block mat specifications outlined in the "Basic Policy for Disaster Recovery to Protect Beautiful Mountains and Rivers" (National Disaster Prevention Association). 【Features】 ○ Labor-saving and reduced construction time ○ Factory production with short delivery times ○ Permeability ○ Excellent flexibility ○ Multi-natural type revetment For more details, please contact us.

The "Fabric Formwork Method" is a concrete forming technique that involves pumping fluid concrete or mortar into a fabric formwork made of high-strength synthetic fibers processed into a mat-like shape. Since the fabric formwork is permeable, excess mixing water is squeezed out by the injection pressure, which reduces the water-cement ratio (W/C), accelerates the curing time, and results in the formation of a high-density, high-strength hardened body. 【Features】 ■ Can be constructed with fewer people and in a shorter time compared to conventional on-site concrete and precast block work. ■ Demonstrates effectiveness in disaster recovery. ■ Allows for underwater construction, eliminating the need for switching work and water-stopping work. ■ Exhibits excellent effects in shortening construction periods and economic efficiency. ■ Adapts well to complex slopes with varying gradients, achieving uniform thickness. ■ Lightweight. ■ Reduces curing time. *For more details, please request materials or view the PDF data available for download.

FabriCast refers to a general term for filling bags and specially shaped bags that meet various needs, developed through the unique bag processing technology cultivated by Asahi Kasei Advance over many years. For example, it is widely used in cases where the lower part of a quay is hollowed out due to erosion, as well as in infill work between existing structures and in tunnel closure construction.

The "Fabric Formwork Method," also known as fabric formwork and concrete mats, was developed in the United States and introduced in Japan in 1970. Since then, efforts have been made to develop and promote the technology, achieving many accomplishments. The "Fabric Formwork Method" is a concrete forming method in which fluid concrete or mortar is pumped into a fabric formwork made of high-strength synthetic fibers processed into a mat shape. Because the fabric formwork is permeable, excess mixing water is squeezed out by the injection pressure, reducing the water-cement ratio (W/C), which accelerates the curing time and results in the formation of a high-density, high-strength cured body. Fabric Formwork is a certified product by the Fabric Formwork Association. 【Features】 ○ Labor-saving ○ Cost-effective For more details, please contact us or download the catalog.

(The NETIS Registration Number: KT-230109-A) In 2015, the Ministry of Land, Infrastructure, Transport and Tourism proposed the "Vision for the Reconstruction of a Disaster Prevention Awareness Society." The content explains both soft and hard measures related to disaster prevention against water-related hazards, and among the hard measures, it indicates the development of resilient structures for river levees to withstand overflow as a crisis management-type hard measure. One of the required functions in this context is the "reinforcement of the back slope of river levees." In response to this need, we developed and put into practical use the Solcomat (block mat) method for back slope reinforcement! We confirmed the reinforcement effect during overflow through hydraulic experiments and were able to verify the levee reinforcement effect!

The "Circular Conback" is a product that can be assembled quickly due to its lightweight and minimal components. The Circular Conback construction method involves setting an inner bag within a cylindrical welded wire mesh and filling it with concrete. Because the components are lightweight, placement and construction are easy. The hardened concrete forms a robust structure. It can also be used for emergency measures during disasters and offers high flexibility in placement. 【Features】 ■ Quickly construct revetments and earth-retaining structures with a diameter of 1m and a height of 1m ■ The circular shape makes it easy to work on curved sections without the need for special molds ■ After the concrete filling hardens, it becomes a strong structure ■ High flexibility in placement allows for various applications *For more details, please download the PDF or feel free to contact us.

We would like to introduce a case study of the "Conback Method" used for the restoration work of road bridge piers after a disaster. In this site, there is a road bridge located above the existing railway tracks, and during heavy rainfall, the foundation of the road bridge pier near the river was eroded. Considering the impact on the railway tracks, it was necessary to urgently implement disaster recovery work. There was a challenge due to the narrow access for transporting materials and equipment, making it difficult to bring in resources using conventional methods. To address this issue, we proposed the use of the on-site cast box-type stabilization block method, which was adopted. [Case Overview] ■ Adopted Method: On-site cast box-type stabilization block "Conback Method" ■ The Conback Method can be used for disaster recovery work in narrow sites. ■ A wire mesh panel made of zinc-coated iron wire, processed into a U-shape, is assembled on-site into a box shape, and a bag made of synthetic fiber sheet is set inside. After installation at the construction site, concrete is poured into the bag, forming the on-site cast stabilization block method. *For more details, please download the PDF or feel free to contact us.

We would like to introduce a case that adopted the "Conback Method" for the construction of a cast-in-place foundation in the existing bridge pier's lower protective layer in a narrow construction area. To allow construction machinery to enter, it was necessary to implement temporary river enclosures and pump out water. However, carrying out temporary river diversions required significant costs and time, and there was a desire for a protective layer construction method that could be executed without diverting the river. By adopting this method, we were able to eliminate the costs associated with temporary works such as river diversions, leading to savings in construction costs and a reduction in construction period, which pleased the client. 【Case Overview】 ■Challenges - It was necessary to remove the bagged stone protective layer material that had been installed as a protective layer for the existing road bridge pier and to install new protective layer blocks. ■Results - We were able to eliminate temporary construction costs. - We achieved savings in construction costs and a reduction in the construction period. *For more details, please download the PDF or feel free to contact us.

We would like to introduce a case study of the "Fabriform Disaster Prevention Steps" installation. In recent years, drowning accidents have become a problem in agricultural retention ponds and golf course ponds, and disaster prevention measures have been required at this agricultural retention pond as well. By adopting this method, we were able to install steps made of fabric formwork at any desired position on the Fabriform revetment slope, thereby constructing emergency disaster prevention steps. [Case Overview] ■ Issues - The surface of the fabric formwork became slippery due to moss and other growths. ■ Results - We were able to install steps using fabric formwork and construct emergency disaster prevention steps. *For more details, please download the PDF or feel free to contact us.

We would like to introduce a case where "Fabricast void filling construction" was carried out. In this site, the foundation of the riverbank protection in a small river had been eroded over time, raising concerns about the collapse of the existing bank protection. The site was narrow, making it difficult to use large construction machinery, and it was necessary to implement a labor-saving construction method to fill the eroded areas. Therefore, we proposed the "Fabricast" special bag used for filling voids caused by erosion, along with the filling method. Based on the drawings from prior investigations, we manufactured the Fabricast, pumped mortar through pipes, and successfully carried out the challenging task of filling the narrow spaces in the confined site. [Case Overview] ■ Issues - The site was narrow, making it difficult to use large construction machinery, necessitating the implementation of a labor-saving construction method to fill the eroded areas. ■ Results - We were able to successfully carry out the challenging task of filling the narrow spaces in the confined site. *For more details, please download the PDF or feel free to contact us.

We would like to introduce a case study on the application of the labor-saving method "Fabric Formwork Fabric Reform Mat." In this project, it was necessary to protect the embankment of the railway track, which is an important structural element, during the railway line improvement work. By adopting this method, we were able to shorten the construction period for the originally planned block method embankment protection work to about one-sixth of the initial estimate. 【Case Overview】 ■Challenges - The large area requiring embankment protection resulted in an extended construction period. ■Results - We achieved a reduction in the construction period, which pleased our client. *For more details, please download the PDF or feel free to contact us.

We would like to introduce a case where the energy-saving construction method "River Web" was implemented for the Geo-Web revetment method. In this project, it was required to adopt a revetment protection method with good drainage properties for the protection of the riverbank behind the embankment during the river embankment reinforcement work. By adopting this method, we were able to shorten the construction period originally planned for the fiber-reinforced basket mat method to about one-fourth. 【Case Overview】 ■Challenges - The initially planned method was to use a fiber-reinforced basket mat filled with crushed stone for revetment protection, leading to an increase in construction time due to the large required area for revetment protection. ■Results - The construction period was shortened to about one-fourth. *For more details, please download the PDF or feel free to contact us.

We would like to introduce a case study on the construction method for steel slope protection called "Geometaframe." To construct a sediment control dam, it was necessary to build a construction access road. We used cement-based solidifying materials to create a steep embankment and were in the process of constructing the access road. However, due to repeated heavy rains, the improved embankment slope collapsed. By installing this product at the slope face during the embankment construction and placing a drainage prevention sheet on the inside of the wall, it became possible to construct the improved embankment while protecting the slope. 【Case Overview】 ■ Challenges - There was a need to construct a sediment control dam for disaster recovery work. ■ Results - We were able to prevent slope erosion due to rainfall, thus protecting the access road from damage. - Reduced the labor required for post-construction work on-site. *For more details, please download the PDF or feel free to contact us.

We would like to introduce a case of "Conback Fabricast Void Filling Construction." In this site, the foundation of the quay wall at the coastal fishing port had been eroded over time, raising concerns about the collapse of the existing quay wall. By applying "Conback" followed by "Fabricast," we were able to carry out restoration work for the eroded areas. 【Case Overview】 ■Challenges - The areas subject to erosion were underwater, and it was necessary to implement low-cost restoration measures for the erosion, requiring the execution of void filling work through labor-saving construction methods. ■Results - Due to the difficulty of transporting and installing prefabricated stabilization blocks, we constructed on-site stabilization blocks "Conback" by stacking them. *For more details, please download the PDF or feel free to contact us.

We would like to introduce a case of "fabric formwork for reforming water channels." In this project, due to large-scale land development, the stream channels in the surrounding area were altered, leading to unexpected locations experiencing water infiltration, raising concerns about expansion. Since there are multiple spring water locations in the stream area, we selected a fabric formwork with drainage type. We designed and constructed it to drain backwater into the channel. 【Case Overview】 ■Challenges - The site is a forest, making it difficult for heavy machinery to enter and shape the slopes, resulting in a site with many irregularities. ■Proposal - A concrete body forming method that injects fluid concrete or mortar into high-strength synthetic fiber fabric formwork using a pump. *For more details, please download the PDF or feel free to contact us.

We would like to introduce a case study of the slope face disaster recovery method that was implemented. In this site, the collapse of the highway slope occurred due to the effects of surface drainage and infiltration drainage caused by concentrated heavy rainfall. It was necessary to implement countermeasures in a short period of time without significantly impacting highway traffic. For the recovery method of the upper part of the collapsed slope, we proposed the three-dimensional geocell method "GeoWeb retaining wall method," which is used for steep slope protection work and backfill soil retention. [Case Overview] ■ Issues - There is a need to implement countermeasures in a short period of time without significantly impacting highway traffic. ■ Proposal - For the recovery method of the lower part of the collapsed slope, we proposed the fabric formwork method "FabriForm," which is used to prevent washing out of slopes and embankments. *For more details, please download the PDF or feel free to contact us.

This document includes the estimated causes and countermeasures learned from the on-site trouble case "Deformation Case of Geocell Retaining Wall during Construction." A few days after the construction began, heavy rainfall occurred in the area, and shortly thereafter, subsidence was observed on the wall side of the geocell retaining wall that was under construction, along with cracks appearing at the top. The document also provides detailed information about the construction method of the three-dimensional geocell method, "Geoweb Retaining Wall Method." We encourage you to read it. [Contents] ■ Site Overview ■ Construction Method: Three-Dimensional Geocell Method "Geoweb Retaining Wall Method" ■ History of Deformation Occurrence ■ Estimated Causes ■ Countermeasures to Prevent Deformation *For more details, please download the PDF or feel free to contact us.

We would like to introduce a case study of the "GeoWeb Retaining Wall Method" using the 3D Geocell construction method. In this project, it was necessary to implement protective work for a slope that changes from a 5:1 cut slope to a 2:1 slope over a length of approximately 16 meters due to road improvement work. The method adopted is a product made by continuously pressing high-density polyethylene sheets into a honeycomb shape, allowing for the construction of a retaining wall structure by filling the expanded GeoWeb with crushed stone and soil while stacking it in a stepped manner. 【Case Overview】 ■Challenges - It was necessary to implement protective work for a slope that changes from a 5:1 cut slope to a 2:1 slope over a length of approximately 16 meters due to road improvement work. ■Results - By adjusting the setback width while stacking in a stepped manner, it was possible to construct a retaining wall that accommodates the changing slope. *For more details, please download the PDF or feel free to contact us.

We would like to introduce a case of "Construction of Grass Prevention Block Mat for Pond Embankment." In this project, it was required to implement slope protection for the agricultural pond embankment at a low cost, as well as to carry out maintenance and management at a low cost. We proposed the "Solcomat Grass Prevention Type," which is a block mat method integrated with a weed prevention sheet. It was adopted, and we confirmed that it maintains a certain level of weed prevention effectiveness even several years after construction. [Case Overview] ■ Issues - It was required to implement slope protection for the pond embankment at a low cost and to carry out maintenance and management at a low cost. ■ Results - A certain level of weed prevention effectiveness has been maintained even several years after construction. *For more details, please download the PDF or feel free to contact us.

We would like to introduce a case study of step-type revetment construction in agricultural pond embankment works. In this project, a fabric formwork was adopted for the embankment construction of agricultural ponds. After the installation of the fabric formwork, there was an issue where the surface of the fabric formwork became slippery due to moss and other growths on the fabric. To address these issues, we proposed the fabric formwork "Beltail." This allowed us to construct a stepped design on the embankment slope using the fabric formwork, enabling the establishment of a non-regular disaster prevention step. 【Case Overview】 ■Challenges - The growth of moss and other plants on the fabric caused the surface of the fabric formwork to become slippery. ■Results - A stepped design was successfully constructed on the embankment slope using the fabric formwork. - The construction was completed in a short time, resulting in reduced construction time and costs. *For more details, please download the PDF or feel free to contact us.

We would like to introduce a case study on measures to prevent water surface drop accidents in pond bank protection construction. At this site, after the installation of fabric formwork, there was a problem where the surface of the fabric formwork became slippery due to moss and other growths on the fabric. In response, we proposed the "Fabric Formwork Disaster Prevention Step Method." This allows for the installation of steps made from fabric formwork at any desired location on the bank slope, enabling the construction of emergency disaster prevention steps. 【Case Overview】 ■ Issues - The surface of the fabric formwork became slippery due to moss and other growths on the fabric. ■ Results - Steps made from fabric formwork were installed at any desired location on the bank slope. - Emergency disaster prevention steps were successfully constructed. *For more details, please download the PDF or feel free to contact us.

We would like to introduce a case where block mats (Solco mats) were adopted for the bank protection method in agricultural reservoir maintenance projects. In recent years, drowning accidents resulting in fatalities have become a problem in agricultural reservoirs and golf course ponds, leading to a demand for disaster prevention measures. The Solco mat disaster prevention type block has a shape that allows for easy grip, taking safety into consideration. This method enables large-scale construction with a small number of workers through machine installation. 【Case Overview】 ■ Issues - Drowning accidents resulting in fatalities have become a problem. ■ Results - Even if someone accidentally falls into the reservoir, they can easily climb back up. - Demonstration experiments confirmed that it is possible to ascend the slope even while carrying a person in need of rescue. *For more details, please download the PDF or feel free to contact us.

We would like to introduce a case where the "Solcomat" energy-saving connected block method was adopted for the restoration work of river levees. In this site, several major earthquakes occurred repeatedly in a short period, causing subsidence of the river levee and cracking of the levee surface. A challenge was the difficulty in procuring materials for emergency restoration of the levee. Our product can sometimes be delivered within a manufacturing lead time of about 10 to 14 days. In this case, the work was completed within one month from the occurrence of the disaster to the completion of the construction. [Case Overview] ■Challenge - Difficulty in procuring materials for emergency restoration of the levee. ■Result - The work was completed within one month from the occurrence of the disaster to the completion of the construction. *For more details, please download the PDF or feel free to contact us.

We would like to introduce a case study of disaster recovery methods for riverbank protection in mountainous areas. In this site, the riverbank collapsed due to increased water flow during heavy rain in a mountainous area. When implementing disaster recovery work, it was necessary to select a method that could utilize local materials as much as possible and had good workability. Therefore, we installed weather-resistant large sandbags on the backfill of the riverbank. As surface protection work, we set up fabric-formwork for the riverbank, and after constructing the riverbank, we carried out in-situ solidification work with a concrete backfill and performed the solidification work. 【Features of Fabric Formwork】 ■ Can be constructed with a small number of workers in a short time, reducing construction period and costs ■ Can be constructed underwater ■ Can be constructed in places where heavy machinery cannot enter ■ Mats can be produced to fit the site shape *For more details, please download the PDF or feel free to contact us.