Biocementation for All, Anywhere: A New Experiment for Introductory Soil Mechanics Courses
Biocementation for All, Anywhere: A New Experiment for Introductory Soil Mechanics Courses
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DOI：
10.1061/9780784484067.047
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发表时间：
2022-03
期刊：
影响因子：
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通讯作者：
M. Roth;L. Caslake;M. P. McGuire
中科院分区：
文献类型：
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作者：
M. Roth;L. Caslake;M. P. McGuire
本文提出了一个新的实验室实验，可以纳入土壤力学导论课程，向学生介绍生物岩土工程领域和生物刺激微生物诱导方解石降水（MICP）的使用。将MICP应用于颗粒土，由于碳酸钙在土壤颗粒表面和土壤颗粒接触处的沉淀，导致土壤的峰值强度和剪切刚度增加。作者制定了处理小体积土壤的方案，并使用基于ASTM D3967-16的简单强度测试来测试处理的有效性。2020年秋季，该实验作为一个为期四周的基于课程的研究体验进行了试点，可以由学生远程或在传统的实验室环境中进行。本文介绍了MICP，并描述了进行实验的协议。本文还提出了如何将该实验纳入传统土力学导论课程的方法。
This paper presents a novel laboratory experiment that can be incorporated into introductory soil mechanics courses to introduce students to the field of biogeotechnical engineering and the use of biostimulated microbially induced calcite precipitation (MICP). Applying MICP to granular soils results in an increase in peak strength and shear stiffness of the soil as a result of the precipitation of calcium carbonate on soil particle surfaces and at soil particle contacts. The authors developed protocols to treat small volumes of soil and to test the effectiveness of the treatment using a simple strength test based on ASTM D3967-16. In fall 2020, the experiment was piloted as a four-week, course-based research experience that can be conducted by students remotely or in a traditional laboratory environment. This paper provides an introduction to MICP and describes the protocols for conducting the experiment. The paper also suggests approaches for how the experiment can be incorporated into a traditional introductory soil mechanics course.