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Indoor direct shear and uniaxial compression testing of polymer-modified silt

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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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Acknowledgements

This work was supported by the National Natural Science Foundation of China (Grant No. 41572245). The funding agencies had no role in the study design, the collection, analysis, or interpretation of data, the writing of the report, or the decision to submit the article for publication.

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Authors and Affiliations

  1. Key Laboratory of High-speed Railway Engineering of the Ministry of Education, Southwest Jiaotong University, No. 111, North Section 1 Second Ring Road, Chengdu, 610031, Sichuan, China

    Kai Cui

  2. Department of Civil Engineering, Southwest Jiaotong University, Chengdu, 610031, China

    Shupeng Fan

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  1. Kai Cui
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  2. Shupeng Fan
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Correspondence to Kai Cui.

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Cui, K., Fan, S. Indoor direct shear and uniaxial compression testing of polymer-modified silt. Cluster Comput 22 (Suppl 3), 5447–5455 (2019). https://doi.org/10.1007/s10586-017-1275-8

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  • DOI: https://doi.org/10.1007/s10586-017-1275-8

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