Influence of Adding the Lightweight Tectosilicate-Structured Zeolite on the Plasticity of Flaky-Structured Clay
Publication: Geo-Congress 2022
ABSTRACT
Natural zeolite is a lightweight crystalline mineral that is formed as a tectosilicate aluminosilicate structure. Such structure includes interconnected channels which induce specified properties that may be considered as contradicted when compared to flaky-structured clay. In this study, the influence of incorporating a small quantity of zeolite on the density and plasticity of clay is investigated. Six zeolite percentages (0%, 1%, 3%, 5%, 10%, and 15%) were added by weight to an expansive clayey sample. Then, optimum water content (OMC), maximum dry density (MDD), Atterberg limits, and swelling potential were determined for all blends. Results showed that addition of 15% zeolite to clay decreased the OMC by about 29% and increased the MDD by 7.5%. Addition of 15% zeolite to clay resulted in a decrease in plasticity index and swelling potential by about 14% and 22%, respectively. Scanning electron microscope (SEM) images were also provided to visualize the microstructures.
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Geo-Congress 2022
Pages: 578 - 586
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Published online: Mar 17, 2022
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