ASAHI KASEI ADVANCE CORPORATION List of Products and Services

"Public Drain" is a new drainage material that maintains high drainage capacity, replacing sand and gravel. It can be used in various applications, including internal drainage of embankments and backfill drainage for general structures. Both the filter and core material are highly strong and flexible, allowing them to adapt to ground changes, eliminating concerns about breakage or cutting. No special techniques or joints are required, and its lightweight nature increases construction speed. Additionally, costs are reduced to 1/2 to 1/5 compared to conventional methods using natural aggregates. 【Features】 - High drainage capacity - High-performance dual-sided drainage type - Adapts to ground deformation - Easy installation and excellent cost-effectiveness For more details, please contact us.

"Possible" is a non-woven fabric sheet made of polyester long fibers (spunbond) for civil engineering applications. This sheet possesses excellent mechanical strength, weather resistance, and chemical resistance, while also meeting the conditions of geotextiles such as permeability and filtration performance. Due to the spunbond manufacturing method, it is produced in a continuous layered structure of long fibers, resulting in superior tensile strength and other properties. There are two types of Possible: the AK type, which is highly flexible, has a large elongation, and a high friction coefficient, and the AK-N type, which is designed for interlocking blocks. Possible has obtained construction technology evaluation No. 93202. 【Features】 ○ Mechanical strength ○ Weather resistance and chemical resistance ○ Permeability and filtration properties ○ Easy to transport and lay down For more details, please contact us.

We would like to introduce a case study on the construction method for "waterproof sheet for agricultural pond disaster recovery." In this case, a pond used for agricultural purposes was protected by a waterproof sheet on its surface. Over time, voids developed in the ground behind the waterproof sheet, causing the sheet to float. We adopted a design that involved installing a permeable crushed stone layer behind the waterproof sheet and discharging the groundwater behind the sheet through a pipe at the bottom of the pond. [Case Overview] ■ Issues - If left unaddressed, there was a possibility that the waterproof sheet could be damaged, compromising its waterproofing performance. ■ Proposal - We proposed using "GeoWeb," a durable frame material, to maintain the crushed stone layer beneath the waterproof sheet. *For more details, please download the PDF or feel free to contact us.

This document includes lessons learned from the field trouble case "Landslide caused by insufficient drainage," outlining the estimated causes and proposed countermeasures. Due to the impact of heavy rainfall, large-scale collapses occurred on the slopes, including geotextile-reinforced earth walls, resulting in significant damage. The document explains the sites and causes of these incidents. Additionally, construction photos of the alternative materials for vertical drainage stone layers and horizontal drainage stone layers, "High-pressure drainage material public drain," are included, which can be useful for consideration during implementation. [Contents] ■ Site Overview ■ Estimated Causes ■ Proposed Countermeasures ■ Alternative Materials for Vertical and Horizontal Drainage Stone Layers (High-pressure drainage material public drain) *For more details, please download the PDF or feel free to contact us.

We would like to introduce a case where a high-pressure horizontal drainage material was proposed as an alternative method to the sand mat used in PBD construction. In this project, it was necessary to implement a fill height of approximately 12 meters on soft ground, and consolidation settlement of the soft ground was anticipated. Therefore, we proposed the high-pressure horizontal drainage material "Public Drain" as an alternative to the sand mat. By using Public Drain, it became possible to significantly reduce the direct construction costs initially planned for the sand mat. 【Case Overview】 ■Challenges - It was necessary to implement a fill height of approximately 12 meters on soft ground, and consolidation settlement of the soft ground was anticipated. ■Results - Direct construction costs for the initially planned sand mat were significantly reduced. *For more details, please download the PDF or feel free to contact us.