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Materials 2016, 9(4), 244; doi:10.3390/ma9040244

Analysis of Homogel Uniaxial Compression Strength on Bio Grouting Material

Department of Civil Engineering, Chosun University, Gwangju 501-759, Korea
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Author to whom correspondence should be addressed.
Academic Editor: Jorge de Brito
Received: 16 December 2015 / Revised: 17 March 2016 / Accepted: 23 March 2016 / Published: 29 March 2016
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Abstract

This study analyzed uniaxial compression strength over time by preparing a homogel specimen from a bio grouting material, a cement-like form produced by environment-friendly microbial reactions. Among chemical grouting methods, the most commonly used method is the Labile Waterglass method. In this study, the homogel uniaxial compressive strength of Labile Waterglass (LW) injection material and that of bio grouting material were measured and analyzed. In order to perform the experiment, a total of 10 types of grouting mixing ratios were prepared by a combination of different materials such as Ordinary Portland Cement, Micro Cement, Bio Grouting Material and Sodium Silicate. They were cured in the air, and their homogel uniaxial compression strengths were measured on days 1, 3, 7 and 28 Based on the test results, it was confirmed that the uniaxial strength of the specimen made with Bio Grouting Material, Ordinary Portland Cement and Micro Cement was increased by more than 30% than that of the specimen only used with Ordinary Portland Cement, as a result of hydrogen-released heat reaction between calcium carbonate, the main ingredient of the bio grouting material, and calcium silicate in the cement. This indicates that the use of 30% bio-grouting material instead of cement in the grouting can be a reasonable mixing ratio to save the use of cement, leading to reduction in CO2 emission. View Full-Text
Keywords: bio grouting; uniaxial compressive strength; calcium carbonate; microbial reaction bio grouting; uniaxial compressive strength; calcium carbonate; microbial reaction
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Park, K.; Kim, D. Analysis of Homogel Uniaxial Compression Strength on Bio Grouting Material. Materials 2016, 9, 244.

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