Abstract
Silt samples modified with a polymer [polyacrylamide (PAM)] and sodium silicate were tested before and after immersion through direct shear and unidirectional compression tests to determine shear strength and compression deformation characteristics. The cohesion and internal friction angle of these modified silt samples were significantly higher. These modified silt samples also exhibited better water resistance and their degrees of compression deformation were small. After water immersion, the degree of condensation polymerization of PAM was lowered, the strength of the modified silt decreased, and the degree of compression deformation increased. It is slightly different with silt modified with sodium silicate.
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