H. W. Xiao and F. H. Lee
Curing Time Effect on Behavior of Cement Treated Marine Clay
144 - 151
2008
2
7
International Journal of Marine and Environmental Sciences
https://publications.waset.org/pdf/2971
https://publications.waset.org/vol/19
World Academy of Science, Engineering and Technology
Cement stabilization has been widely used for
improving the strength and stiffness of soft clayey soils. Cement
treated soil specimens used to investigate the stressstrain behaviour in
the laboratory study are usually cured for 7 days. This paper examines
the effects of curing time on the strength and stress strain behaviour of
cement treated marine clay under triaxial loading condition.
Laboratoryprepared cement treated Singapore marine clay with
different mix proportion SCW (soil solidcement solidwater) and
curing time (7 days to 180 days) was investigated through conducting
unconfined compressive strength test and triaxial test. The results
show that the curing time has a significant effect on the unconfined
compressive strength u q , isotropic compression behaviour and stress
strain behaviour. Although the primary yield loci of the cement treated
soil specimens with the same mix proportion expand with curing time,
they are very narrowly banded and have nearly the same shape after
being normalized by isotropic compression primary stress &039;
py p . The
isotropic compression primary yield stress &039;
py p was shown to be
linearly related to unconfined compressive strength u q for specimens
with different curing time and mix proportion. The effect of curing
time on the hardening behaviour will diminish with consolidation
stress higher than isotropic compression primary yield stress but its
damping rate is dependent on the cement content.
Open Science Index 19, 2008