Laboratory investigations on the lime stabilization of sensitive clays: shear strength development
Laboratory investigations on the lime stabilization of sensitive clays: shear strength development
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DOI：
10.1139/t90-040
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发表时间：
1990-06
影响因子：
3.6
通讯作者：
J. Locat;M. Bérubé;M. Choquette
中科院分区：
文献类型：
--
作者：
J. Locat;M. Bérubé;M. Choquette
对敏感性粘土的生石灰稳定化的实验室研究表明，即使在含水量高于液限的情况下，如果提供足够的时间和石灰，也可以获得显著的强度增加。对强度发展的理解是基于对土壤颗粒之间的物理桥接的认识，如在胶结过程中。石灰稳定的物理和力学意义是通过概念模型来描述的。混合越好，石灰的分散和扩散就越好，从而稳定化过程也就越好。已经发现，在给定的时间，含水量和强度之间的关系，遵循幂律，使得有可能建立石灰稳定这种粘土的实验室图表。关键词：生石灰稳定，敏感性粘土，胶结，凝聚力，抗剪强度，微观结构，概念模型，实验室图表。
A laboratory investigation on the quicklime stabilization of sensitive clays has shown that, even at a water content above the liquid limit, significant strength increase can be obtained if enough time and lime are provided. The understanding of strength development is based on the recognition of physical bridging between soil particles, as in a cementation process. The physical and mechanical significance of lime stabilization is described by means of conceptual models. The better the mixing, the better the dispersion and the diffusion of lime and, consequently, the stabilization process. It has been found that the relationship between water content and strength, at a given time, follows a power law that makes possible the establishment of laboratory charts for lime stabilization of such clays. Key words: quicklime stabilization, sensitive clays, cementation, cohesion, shear strength, microstructure, conceptual model, laboratory charts.