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http://dx.doi.org/10.4014/jmb.1701.01041

Biocementation of Concrete Pavements Using Microbially Induced Calcite Precipitation  

Jeong, Jin-Hoon (Department of Civil Engineering, Inha University)
Jo, Yoon-Soo (Department of Civil Engineering, Inha University)
Park, Chang-Seon (Department of Civil Engineering, Inha University)
Kang, Chang-Ho (Department of Biological Engineering, Inha University)
So, Jae-Seong (Department of Biological Engineering, Inha University)
Publication Information
Journal of Microbiology and Biotechnology / v.27, no.7, 2017 , pp. 1331-1335 More about this Journal
Abstract
In this study, the feasibility of introducing calcite-forming bacteria into concrete pavements to improve their mechanical performance was investigated. Lysinibacillus sphaericus WJ-8, which was isolated in a previous study and is capable of exhibiting high urease activity and calcite production, was used. When analyzed via scanning electron microscopy (SEM) and X-ray diffraction, WJ-8 showed a significant amount of calcite precipitation. The compressive strength of cement mortar mixed with WJ-8 cells and nutrient medium (urea with calcium lactate) increased by 10% compared with that of the controls. Energy dispersive x-ray spectroscopy analyses confirmed that the increase in strength was due to the calcite formed by the WJ-8 cells.
Keywords
Microbially induced calcite precipitation; concrete pavement; calcite-forming bacteria; cement mortar;
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Times Cited By KSCI : 1  (Citation Analysis)
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