CEMENTATION OF SANDS DUE TO MICROBIOLOGICALLY-INDUCED CARBONATE PRECIPITATION

SOILS AND FOUNDATIONS

MASAHARU FUKUE¹  SHIN-ICHI ONO¹  YOSHIO SATO¹ 

[1] Tokai University

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

DOI  :  10.3208/sandf.51.83

学科分类：建筑学

来源: Japanese Geotechnical Society / Jiban Kogakkai

【 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.

【 授权许可】

Unknown