CEMENTATION OF SANDS DUE TO MICROBIOLOGICALLY-INDUCED CARBONATE PRECIPITATION

[摘要] References(24)Cited-By(7)In this study, microbial precipitation of carbonate was observed using high microbial urease activity, and it was found that the ratio of Mg/Ca affected the types of crystals produced. Without Mg2+, calcite was produced using only CaCl2, while the presence of Mg produced Mg-calcite, magnesite and/or possibly dolomite of round, spherical or fibrous shapes, depending on reaction time, pH and Mg/Ca ratio. The carbonate produced contributed to the development of cementation for sands. The presence of Mg showed a relatively strong cementation of the carbonate.

[学科分类] 建筑学

[关键词] carbonate;cement;microbes;(IGC: K2/K6/K14)