Influence of bacterial self-healing agent on early age performance of cement-based materials

被引：54

作者：

Su, Yilin ^{[1
,2
,3
]}

Feng, Jianhang ^{[1
,2
,3
]}

Jin, Peng ^{[1
,2
,3
]}

Qian, Chunxiang ^{[1
,2
,3
]}

机构：

[1] Southeast Univ, Coll Mat Sci & Engn, Nanjing 211189, Jiangsu, Peoples R China

[2] Southeast Univ, Res Inst Green Construct Mat, Nanjing 211189, Jiangsu, Peoples R China

[3] Southeast Univ, Jiangsu Key Lab Construct Mat, Nanjing 211189, Jiangsu, Peoples R China

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2019年 / 218卷

关键词：

Bacteria; Self-healing; Rheology; Pore structure; MICROSTRUCTURAL CHARACTERIZATION; CARBONATE PRECIPITATION; EXPANDED PERLITE; CONCRETE; HYDRATION; MORTAR; DURABILITY; ADSORPTION; ANHYDRASE; STRENGTH;

D O I：

10.1016/j.conbuildmat.2019.05.077

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

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.

引用

页码：224 / 234

页数：11

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