INFLUENCE OF CEMENT SOLIDIFICATION AGENT AND SLURRY DENSITY ON MECHANICAL PROPERTY OF LIQUEFIED STABILIZED SOIL

Abstract

The traditional Liquefied Stabilized Soil (LSS) is easy to occur brittle failure with the increase
of cement content and it was found that the addition of fiber content might improve the brittle property of the
LSS. Recently, the LSS produced with lower slurry density than standard slurry density is often used to reduce
the overburden pressure during the in-situ constructions which may cause several problems. Therefore, in this
study, a series of triaxial compression tests were conducted on LSS specimens prepared in different slurry
densities of 1.216, 1.280 g/cm3
, cement content of 80, 100 kg/m3 and the fiber content of 0, 10 kg/m3
. The
results of undrained triaxial tests showed that slight decrease of slurry density can decrease the peak stress of
LSS remarkably. Meanwhile, the changing in cement content can affect peak strength as well as the decreasing
rate of Etan/E0 in the early loading stage. In addition, by adding fiber material, the local damage caused by
shearing and the brittleness were improved. Based on these results of the triaxial tests and unconfined
compression tests, the influences of changing in slurry density, as well as added amount of fiber on the triaxial
shear properties of the LSS with different cement contents, are discussed in detail.