Effect of JC-1 microorganism on compressive strength of cement paste

被引：1
|
作者：
Lee, Jun Cheol [1 ]
Chung, Chul-Woo [2 ]
Kim, Wha Jung [1 ]
Lee, Chang Joon [1 ]
机构：
[1] Kyungpook Natl Univ, Sch Architecture & Civil Engn, Taegu 702701, South Korea
[2] Pukyong Natl Univ, Dept Architectural Engn, Pusan 608739, South Korea
来源：
MATERIALS LETTERS | 2013年 / 105卷
基金：
新加坡国家研究基金会;
关键词：
Microorganism; Compressive strength; Calcium hydroxide; Hydration;
D O I：
10.1016/j.matlet.2013.04.022
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effect of the JC-1 microorganism on the strength development of cement paste was investigated. An experimental program using the microorganism was designed for the investigation. Four types of cement paste samples were prepared with four different cell concentrations. The following tests were conducted with the cement paste: (1) Thermo-Gravimetric analysis/Differential Scanning Calorimetry (TG/DSC), (2) degree of hydration, and (3) compressive strength. Results from TG/DSC and degree of hydration showed that the JC-1 microorganism accelerated early calcium silicate hydration, affecting the compressive strength of the cement paste. As a result, the cement paste with the microorganism showed higher early strength development than plain cement paste. The optimum dosage of JC-1 microorganism for strength enhancement was at the cell concentration of 1 x 10(5) cells/ml. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：224 / 226
页数：3
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