Abstract
This report is a case history of the construction work in which the artificial light-weight soils were used for the back-filling of the revetment in Tokyo International Airport. The light-weight soils were made by mixing the waste clay slurry, which was caused by the construction of shield tunnel in the airport, with cement, air foam and EPS beads. According to the data taken in the construction, the properties of the soils satisfied the range for the quality control in spite of the change of the properties of waste soil. To investigate the ground properties of the light-weight soils, the core sampling and the laboratory tests, in-situ plate loading test, CBR test, and Falling Weight Deflectmeter Test were carried out after 2-6 months after the constriction, and the comparison and discutions are made.
