Remediation and Improvement of Concrete by Bacterial Mediated Carbonate Deposition

被引：2
作者：
Li, Peihao [1 ]
Wang, Kun [1 ,2 ]
Wang, Zhongjin [3 ]
机构：
[1] Tongji Univ, Sch Aerosp Engn & Appl Mech, Shanghai 200092, Peoples R China
[2] Zhejiang Univ Tech, Coll Civil Engn & Architecture, Hangzhou, Zhejiang, Peoples R China
[3] Zhejiang Univ, Inst Geotech Engn, Hangzhou, Zhejiang, Peoples R China
来源：
TRENDS IN CIVIL ENGINEERING, PTS 1-4 | 2012年 / 446-449卷
关键词：
Bacterial concrete; Self-healing; Bio-deposition; Remediation; Carbonate; PRECIPITATION;
D O I：
10.4028/www.scientific.net/AMR.446-449.3373
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
Bio-deposition has led to the exploration of remediation and improvement technique in the field of cementitious materials. The aim of this study was to investigate the effects of bio-deposited carbonate on parameters affecting concrete properties and the effects of bio-deposition on the durability of concrete specimens. The remediation efficacy of cracks in concrete was studied through compressive strength test and flexural failure test. Water absorption and the resistance towards carbonation of concrete were analyzed by water absorptivity test and concrete accelerated carbonation test, respectively. Experimental results show that bio-deposition is able to make the improvement in concrete compressive strength and the remediation of cracks. Bacterial deposition of calcite on the surface of the concrete specimens results in a decrease of capillary water uptake and carbonation rate constant, and an increase in resistance towards degradation processes.
引用
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页码：3373 / +
页数：2
相关论文
共 8 条
[1]   Improved strength and durability of fly ash-amended concrete by microbial calcite precipitation [J].
Achal, Varenyam ;
Pan, Xiangliang ;
Ozyurt, Nilufer .
ECOLOGICAL ENGINEERING, 2011, 37 (04) :554-559
[2]  
[Anonymous], 2010, CEMENT CONCRETE RES, DOI [DOI 10.1016/J.CEMCORES.2009.08.025, DOI 10.1016/j.cemconres.2009.08.025]
[3]   Bacterial carbonate precipitation improves the durability of cementitious materials [J].
De Muynck, Willem ;
Debrouwer, Dieter ;
De Belie, Nele ;
Verstraete, Willy .
CEMENT AND CONCRETE RESEARCH, 2008, 38 (07) :1005-1014
[4]   Bacterial carbonate precipitation as an alternative surface treatment for concrete [J].
De Muynck, Willem ;
Cox, Kathelijn ;
De Belle, Nele ;
Verstraete, Willy .
CONSTRUCTION AND BUILDING MATERIALS, 2008, 22 (05) :875-885
[5]   Microbial carbonate precipitation in construction materials: A review [J].
De Muynck, Willem ;
De Belie, Nele ;
Verstraete, Willy .
ECOLOGICAL ENGINEERING, 2010, 36 (02) :118-136
[6]   Use of microorganism to improve the strength of cement mortar [J].
Ghosh, P ;
Mandal, S ;
Chattopadhyay, BD ;
Pal, S .
CEMENT AND CONCRETE RESEARCH, 2005, 35 (10) :1980-1983
[7]   Corrosion protection of cement-based building materials by surface deposition of CaCO3 by Bacillus pasteurii [J].
Qian Chunxiang ;
Wang Jianyun ;
Wang Ruixing ;
Cheng Liang .
MATERIALS SCIENCE & ENGINEERING C-BIOMIMETIC AND SUPRAMOLECULAR SYSTEMS, 2009, 29 (04) :1273-1280
[8]  
Ramachandran SK, 2001, ACI MATER J, V98, P3
1