{"title":"Performance of Footing on MICP Induced Slope","authors":"S. Pusadkar, Rewati N. Tawalare, A. I. Dhatrak","doi":"10.9790/1684-140306100105","DOIUrl":null,"url":null,"abstract":"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.","PeriodicalId":14565,"journal":{"name":"IOSR Journal of Mechanical and Civil Engineering","volume":"1 1","pages":"100-105"},"PeriodicalIF":0.0000,"publicationDate":"2017-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"4","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"IOSR Journal of Mechanical and Civil Engineering","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.9790/1684-140306100105","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 4
Abstract
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.
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