Geoscience Reference
In-Depth Information
Figure 5.10
Liquid limit vs.
c
c
/
(1
+
e
o
)
(
after
Al-Raziqi
et al.
, 2003).
Figure 5.11 shows the settlement parameters for some French bog peat. The trend
of the relationship between the settlement parameters
c
c
/(1
+
e
o
) is to increase with
increasing natural water content.
5.2.2 Coefficient of consolidation,
c
v
There is a significant decrease in the coefficient of consolidation of the undisturbed
samples with an increase in effective stress above the apparent preconsolidation pres-
sure (
σ
c
), as can be seen in Figure 5.12. This decrease is more marked in the samples
that had higher organic contents (Farrell
et al
., 1994). The coefficient of consolidation,
c
v
, generally decreases as the liquid limit of the soil increases.