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Stabilizing Sulfate-rich High Plasticity Clay with Moisture Activated Polymerization by Simon T. Gilazghi; Jie Huang; Sepehr Rezaeimalek; Sazzad Bin-Shafique is a Engineering article available to read on EtoBox.

What is Stabilizing Sulfate-rich High Plasticity Clay with Moisture Activated Polymerization about?

Cementitious soil stabilizers such as lime and cement are well known to cause swelling and, possibly, reduction in strength when used to stabilize sulfate-rich soil with high plasticity index (PI). This study explores using a moisture activated liquid polymer -a member of Methylene diphenyl diisocyanate (usually addressed as MDI) family, as a substitute of cementitious stabilizers to stabilize sulfate-rich high plasticity soil. The effect of mixing method, curing time, and polymer dosage on the unconfined compressive strength (UCS) and free swelling potential of polymer stabilized high plasticity clay with 2% sulfate (20,000 ppm) was evaluated in this research. In addition, the susceptibility of lime and polymer stabilized sulfaterich soils in water was compared. It was found that the mixing method has a great impact on the properties of the stabilized soil, i.e., to obtain the maximum strength the soil should first be mixed with water before the polymer is added. Under moist conditions, the UCS increased significantly with curing time until 4 days. With the determined mixing method and curing time, 0, 4, 7, 10, and 13% of polymer were added to the sulfate-rich high plasticity clay

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Author

Simon T. Gilazghi; Jie Huang; Sepehr Rezaeimalek; Sazzad Bin-Shafique

Publisher

Elsevier BV

Published

2016

Language

EN

Field

Engineering (Physical Sciences)