ASAHI KASEI ADVANCE CORPORATION List of Products and Services

The "GeoAce RRR Method" is a construction technique that uses a grid-like reinforcement material called "GeoAce," which is formed by bundling high-strength nylon 66 in a special woven structure, along with rigid wall surfaces to vertically construct the backside of embankments. This allows for the verticalization of the embankment surface, enabling effective land use. The "GeoAce Mattress Method" is a technique that supports the superimposed load through the separation and confinement effects of GeoAce. Compared to conventional replacement methods, it requires less improvement depth and is effective in suppressing uneven settlement. Additionally, it is economical as it reduces the volume of excavation and backfill. 【Features of GeoAce】 ■ High strength ■ Excellent workability ■ Moderate flexibility ■ Superior cost-effectiveness ■ No special machinery tools required For more details, please refer to the catalog or feel free to contact us.

"The Geo Ace RRR Method" is a construction method that uses Geo Ace and rigid wall surfaces to vertically construct the backside of embankments. It provides sufficient stability with a short installation length, and due to the rigidity of the wall surface, auxiliary structures can be directly installed on the wall. It follows ground deformation and simplifies foundation treatment. Additionally, it has a degree of adaptability to ground deformation and differential settlement, and it excels in seismic resistance. Since large heavy machinery is not required, it allows for environmentally friendly construction. Geo Ace is a product certified by the RRR Method Association. [Features] - Effective land use - Excellent workability and cost-effectiveness - High reliability and outstanding safety - Wide applicability of embankment materials - No special foundation required For more details, please contact us.

The "Geo Ace Mattress Method" is a construction method that supports the applied load through the separation and confinement effects of Geo Ace. It is a grid-like reinforcement material formed by concentrating high-strength synthetic fibers (Nylon 66) into a special woven structure, and its performance is further enhanced by a special resin. Due to its structure using high-strength synthetic fibers, it possesses moderate flexibility and is unaffected by temperature changes. It does not require special machinery for installation, making it economically advantageous. Additionally, it is lightweight and requires a short embedment depth, which enhances workability. 【Features】 - High-strength synthetic fiber (Nylon 66) - High strength, rich in flexibility, and unbreakable - Economically advantageous - Excellent workability For more details, please contact us.

"GeoWeb" is a geocell product made by high-frequency pressure bonding high-density polyethylene (HDPE) sheets in a staggered pattern, which forms a three-dimensional honeycomb structure when deployed. By filling the cells with materials such as excavated soil or crushed stone, a strong structure is created. GeoWeb is effective for various applications such as slope protection, retaining walls, riverbank protection, and improving subgrade support, and its use as an environmentally friendly construction method is still expanding. 【Features】 ○ Lightweight and Compact - GeoWeb is lightweight and compact, making it convenient for storage and easy to transport to the site. ○ Easy Installation - It can be deployed on gentle slopes and used as slope protection material by securing it with anchor pins and covering it with soil. ○ Flexible Structure - The material is made of durable and flexible high-density polyethylene, allowing for installation that conforms to the shape of the site. ○ Greening with Native Species - By filling the cells with local seed-containing excavated soil, greening with native species can be achieved. ○ Wide Range of Applicable Construction Types For more details, please contact us.

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 railway reinforcement earthwork method "RRR (Three R) Method." In this project, traffic congestion caused by a railway level crossing intersecting with a major road in the city center was a problem. We proposed a method using integrated wall panels with reinforcement materials installed in the ground and bending rigidity. Due to the high rigidity of the wall panels, the restraining effect is strong, allowing us to minimize deformation after completion. 【Case Overview】 ■ Issues - It was required to carry out construction to elevate the railway tracks without interfering with railway operations and while keeping the railway tracks available. ■ Proposal - A method named the rigid wall reinforcement earth retaining wall method. - "Reinforced embankment construction" to create a steep embankment slope. *For more details, please download the PDF or feel free to contact us.

We would like to introduce a case study of the "soft ground improvement method." In this project, it was necessary to carry out embankment work on extremely soft ground with an N value of less than 1 and a high groundwater level. The extremely soft ground was not only unsuitable for construction machinery but also impassable for humans. Therefore, it was essential to ensure the trafficability (mobility) of construction machinery when performing the embankment work. By laying down a "public mesh," the surface support capacity of the extremely soft ground was reinforced, making it possible for humans to walk on it. 【Case Overview】 ■ Challenges - The ground was impassable for humans, and it was necessary to ensure the trafficability (mobility) of construction machinery for the embankment work. ■ Results - By placing embankment on the ground where the public mesh was laid, we were able to reduce the sinking of the embankment into the soft ground. *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.

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.

"Reinforced earth wall construction" refers to a method of reinforcing embankments by laying synthetic resin reinforcement materials called geogrids (product name: Trigrid) within the fill, which allows for the construction of nearly vertical wall surfaces through the frictional force between the reinforcement and the soil. By using steel wall materials in conjunction, it is possible to construct embankments with high stability and durability. The laying pattern is determined according to the height of the embankment, allowing for flexible adaptation to sudden changes in road alignment or height. 【Features】 ■ Enables the construction of high-performance access roads in mountainous areas ■ Forest roads capable of withstanding large vehicle traffic ■ Excellent long-term durability, reducing maintenance efforts ■ Easy to construct, requiring no special heavy machinery, and can be executed by ordinary workers ■ Complies with reliable design methods *For more details, please download the PDF or feel free to contact us.

This is an example of implementing a geocell (geo-web) mattress construction method by laying a three-dimensional geocell on weak ground and filling it with crushed stone in layers. In this project, it was necessary to have the required ground support capacity to support the concrete retaining wall structure. The geocell is a product made from high-density polyethylene sheets that are processed into a continuous three-dimensional honeycomb shape using high-frequency welding. This method reinforced the surface support capacity of the weak ground, enhancing its load-bearing capacity. 【Case Overview】 ■Challenges - There was a need to reinforce the support capacity of the ground where the concrete retaining wall would be installed. ■Results - The surface support capacity of the weak ground was reinforced, and the load-bearing capacity was improved. *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.

We would like to introduce a case where the geotextile reinforcement earthwork method "TRIGRID Steel Wall Material Geometaframe" was adopted for disaster recovery. In this site, due to heavy rain, a collapse occurred on a small municipal road leading to the mountain top. The affected area was near the mountain top, making it difficult to transport materials and carry out construction for disaster recovery. By adopting this method, it became possible to construct a recovery road even in a narrow site, allowing for the restoration of the road. 【Case Overview】 ■ Challenges - The method allows for easy transportation of materials and can be implemented with small-scale construction equipment. ■ Effects - Enabled the construction of a recovery road even in a narrow site. *For more details, please download the PDF or feel free to contact us.

We would like to introduce a case where the large block construction method "Circular Conback" was implemented at a forest road collapse site. This site, located deep in the mountains, has frequently experienced collapses of the forest road due to heavy rains and other factors in recent years. Areas repaired with large sandbags deteriorated and collapsed again within a few years, leading to ongoing issues. In the case of repairs using large sandbags, emergency restoration is required, necessitating subsequent removal and full restoration. However, by adopting this method and utilizing locally generated soil and sand for soil-cement filling, it became possible to achieve full restoration immediately. 【Case Overview】 ■ Issues - Frequent collapses of the forest road due to heavy rains and other impacts - Areas repaired with large sandbags deteriorated within a few years and collapsed again ■ Benefits of Implementation - Lightweight materials make placement and construction easy - Immediate full restoration is possible *For more details, please download the PDF or feel free to contact us.