Influence of bacterial self-healing agent on early age performance of cement-based materials
Influence of bacterial self-healing agent on early age performance of cement-based materials
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细菌自修复剂对水泥基材料早期性能的影响
DOI：
10.1016/j.conbuildmat.2019.05.077
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发表时间：
2019-09-10
影响因子：
7.4
通讯作者：
Qian, Chunxiang
中科院分区：
文献类型：
--
作者：
Su, Yilin;Feng, Jianhang;Qian, Chunxiang
细菌作为一种自修复剂已被应用于水泥基材料中，但关于细菌对未损伤混凝土本身的影响的研究还很有限。研究了细菌自修复剂对水泥土流变性、水化过程、孔结构、强度发展及矿化产物变化的影响。通过对Zeta电位、电阻率、BET和mu-CT、TG-DSC和SEM结果的分析，发现细菌自修复剂的直接掺入提高了水泥的稠度、水化速率和矿化产物的数量，有利于水泥强度的提高和孔结构的致密化。(C)2019爱思唯尔有限公司版权所有。
Bacteria have been applied in cement-based materials as a self-healing agent while research about the effect of bacteria on undamaged concrete itself is still limited. This paper investigated influence of bacterial self-healing agent on rheology, hydration process, pore structure, strength development and mineralization product changes. By analyzing zeta potential, electrical resistivity, BET and mu-CT, TG-DSC and SEM results, it could be found that direct incorporation of bacterial self-healing agents has increased consistency, hydration rate, and quantity of mineralization products, which could be conducive to enhance strength and dense pore structure. (C) 2019 Elsevier Ltd. All rights reserved.