廃棄物処分場における遮水工としての膨潤性止水材の耐久性評価

抄録

This paper estimates the durability of water-swelling materials that is an important element in water cutoff performance of vertical cutoff walls constructed in coastal waste landfill sites. We carry out accelerated deterioration tests on the water-swelling materials. Furthermore, we predict the durability of water-swelling materials based on Arrhenius law.
When Arrhenius law is applied to the result of accelerated deterioration test, the life of water-swelling materials will be estimated about 27 years. This suits the previous results in which decreasing in strength of water-swelling materials will not advance after progress from their curing start for one year. Therefore, it is thought that water-swelling materials are utilizable enough as water cutoff materials of vertical cutoff walls constructed in waste landfill sites for tens of years.