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Experimental investigation of solidifying desert aeolian sand using microbially induced calcite precipitation
Li, Duo1; Tian, Kan-liang2,3; Zhang, Hui-li1; Wu, Yu-yao2; Nie, Kang-yi1; Zhang, Shi-can1
2018-05-30
Source PublicationCONSTRUCTION AND BUILDING MATERIALS
ISSN0950-0618
Volume172Pages:251-262
Corresponding AuthorTian, Kan-liang(tiankanliang@163.com)
AbstractIn this study, five different concentrations of solidification solution (0.5, 1.0, 1.5, 2.0 and 2.5 mol/L urea-CaCl2) were used to solidify desert aeolian sand by microbially induced calcite precipitation (MICP). As the concentration of solidification solution increased, the CaCO3 content increased, sand density increased, permeability was reduced and the unconfined compressive strength increased. Formation of CaCO3 was the primary cause of changes in the sand's properties. Specifically, CaCO3 filled the pores between the sand particles and the pore volume decreased. The CaCO3 formed in response to low concentrations (i.e., 0.5-1.0 mol/L) and high concentrations (i.e., 1.5-2.5 mol/L) of urea-CaCl2 solution played different roles in solidification of the structures. (C) 2018 Elsevier Ltd. All rights reserved.
KeywordMicrobially induced calcite precipitation Sporosarcina pasteurii Desert aeolian sand Solidification Bio-treatment
DOI10.1016/j.conbuildmat.2018.03.255
WOS KeywordINDUCED CARBONATE PRECIPITATION ; CLAY SOIL ; STRENGTH ; CONSTRUCTION ; IMPROVEMENT ; CONCRETE ; STABILIZATION ; SURFACE
Indexed BySCI
Language英语
Funding ProjectNational Key Research and Development Program of China[2016YFE0203400]
Funding OrganizationNational Key Research and Development Program of China
WOS Research AreaConstruction & Building Technology ; Engineering ; Materials Science
WOS SubjectConstruction & Building Technology ; Engineering, Civil ; Materials Science, Multidisciplinary
WOS IDWOS:000432768100025
PublisherELSEVIER SCI LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/54925
Collection中国科学院地理科学与资源研究所
Corresponding AuthorTian, Kan-liang
Affiliation1.Northwest A&F Univ, Coll Water Conservancy & Construct Engn, Yangling, Shaanxi, Peoples R China
2.Northwest A&F Univ, Inst Soil & Water Conservat, Yangling, Shaanxi, Peoples R China
3.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling, Shaanxi, Peoples R China
Recommended Citation
GB/T 7714
Li, Duo,Tian, Kan-liang,Zhang, Hui-li,et al. Experimental investigation of solidifying desert aeolian sand using microbially induced calcite precipitation[J]. CONSTRUCTION AND BUILDING MATERIALS,2018,172:251-262.
APA Li, Duo,Tian, Kan-liang,Zhang, Hui-li,Wu, Yu-yao,Nie, Kang-yi,&Zhang, Shi-can.(2018).Experimental investigation of solidifying desert aeolian sand using microbially induced calcite precipitation.CONSTRUCTION AND BUILDING MATERIALS,172,251-262.
MLA Li, Duo,et al."Experimental investigation of solidifying desert aeolian sand using microbially induced calcite precipitation".CONSTRUCTION AND BUILDING MATERIALS 172(2018):251-262.
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