Use Of Sand Drains For Improving
Characteristics Of Loessail Soil: A Case Study
Author(s)
A. Fouda, T. Lewis & G. Khan
Abstract
Loessail soil is a collapsing soil type, sometimes referred to as metastable soil,
which undergoes a structural collapse if saturated. The collapse is due to the loss
of strength in the clay binders between the silt size particles, leading to
construction and design problems for highways and buildings. Use of sand
drains is one of the methods used, to facilitate the pre-wetting of the soil in order
to induce collapse and thus improve its characteristics and strength parameters.
Challenges facing the contractor and the design engineer include predicting the
total settlement associated with the soil collapse, and estimating the water
volume and time needed to complete the soil collapse program. In addition, a
monitoring program employing settlement plates and moisture sensors is
required to monitor change is soil moisture content
Keywords
Related Book
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