Performance of Footing on MICP Induced Slope
Performance of Footing on MICP Induced Slope
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DOI：
10.9790/1684-140306100105
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发表时间：
2017-06
期刊：
影响因子：
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通讯作者：
S. Pusadkar;Rewati N. Tawalare;A. I. Dhatrak
中科院分区：
文献类型：
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作者：
S. Pusadkar;Rewati N. Tawalare;A. I. Dhatrak
微生物诱导方解石沉淀（MICP）是一种利用自然生物地球化学过程提高沙子强度和刚度的新型地面改良方法。本文介绍了MICP在边坡改良中的应用。在实验室对条形基础进行了1.5H：1V沙坡模型荷载试验。通过在 100 mm x 100 mm 的网格图案中注入浓度为 2M 的细菌（巴斯德酵母）和水泥溶液（CaCl2 + 尿素）来处理斜坡。这些斜坡需要在 14 天和 28 天的潜伏期内进行固化。荷载试验针对边缘基础的三个位置进行，距坡顶的距离为 0B、B 和 2B。结果表明，经过MICP处理后，边坡基础承载力显着提高。养护28天的边坡承载力达到最大。
Microbial-induced calcite precipitation (MICP) is a novel ground improvement method to increase strength and stiffness of sand using natural biogeochemical processes. This paper describes the application of MICP in slope improvement. A strip footing was tested in a laboratory by conducting a model load test on sand slope of 1.5H: 1V. The slope was treated by injecting bacteria (S. Pasteurii) and cementation solution (CaCl2 + Urea) at 2M concentration in a grid pattern of 100 mm x 100 mm. These slopes were allowed to cure for the incubation period of 14 and 28 days. The load tests were conducted for three locations of footing on edges at a distance measured from slope crest as 0B, B and 2B. The results indicated that the bearing capacity of footing on slope increased significantly after MICP treatment. The bearing capacity of slopes cured for 28 days was found to be maximum.