Precipitation of Calcite by Indigenous Microorganisms to Strengthen Liquefiable Soils

被引:280
作者
Burbank, Malcolm B. [2 ]
Weaver, Thomas J. [1 ]
Green, Tonia L. [2 ]
Williams, Barbara C. [3 ]
Crawford, Ronald L. [2 ,4 ]
机构
[1] US Nucl Regulatory Commiss, Washington, DC 20555 USA
[2] Univ Idaho, Environm Biotechnol Inst, Moscow, ID 83843 USA
[3] Univ Idaho, Dept Biol & Agr Engn, Moscow, ID 83843 USA
[4] Univ Idaho, Dept Microbiol Mol Biol & Biochem, Moscow, ID 83843 USA
基金
美国国家科学基金会;
关键词
bio-soil; calcite; biomineralization; liquefaction; bio-stimulation; CONE PENETRATION TESTS; CARBONATE; TRANSFORMATION; TEMPERATURE; CEMENTATION; TRANSPORT; SURVIVAL; VATERITE;
D O I
10.1080/01490451.2010.499929
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Enrichments for indigenous microorganisms capable of hydrolyzing urea in the presence of CaCl2 were performed on potentially liquefiable saturated soils in both the laboratory and in situ. Following enrichment, treatment of soils with nutrients, CaCl2 and urea resulted in significant in situ precipitation of calcite, even at depth, by indigenous microorganisms. The biomineralized soils showed properties that indicate calcite precipitation increased their resistance to seismic-induced liquefaction.
引用
收藏
页码:301 / 312
页数:12
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