A consideration on the durability of fiber-cement-stabilized mud produced from construction sludge

摘要

In this study, the durability of the fiber-cement-stabilized mud produced from construction sludge was investigated. In order to use the modified soils as lightweight landfill materials, the durability is very important. Therefore, repeated cycle tests of drying and wetting were carried out. It was found that the durability of fiber-cement-stabilized mud is higher than that of cement-stabilized mud. It is often said that the durability depends on the generation of the crack in the drying process. In order to investigate the relationship between generation of the crack and the ability to hold the water in the mud, the inside of the mud was visualized by using X-ray CT equipment. However, a clear difference was not observed in both fiber-cement-stabilized mud and cement-stabilized mud. From this result, it can be considered that the ability to hold the water in the mud is not related to the durability and the fiber in the mud restrains the generation of the crack.