STRENGTH CHARACTERISTICS OF CRASHED CEMENT-MIXED SOIL AS GRANULAR GEOMATERIALS

A granular material can be obtained by crushing a solidified dredged marine deposit mixed with cement. It is convenient if this can be used as an alternative fill material for such as reclamation behind seawall, however, it has not been well known with sufficient back data if the material can be used for such purpose. This paper introduces the results of the strength test for the crushed cement-mixed soil. A dredged marine deposit having water contents of 110% was mixed with the cement with dosage of 100-400 kg/m3, cured for 28 days and then crushed. Two kinds of test were performed. One is a compression test on single particles of 4.75-9.5mm and the other is a triaxial compression test (CD) on crushed soils with particle size distribution of 0.85-2mm and 2-4.75mm. The test results revealed that though quantity of volume compression by particle destruction is larger than that of sand/gravel, internal friction angle is over 30°.