The properties and mechanism of microbial mineralized steel slag bricks

被引：48
作者：
Wang, Kai
Qian, Chunxiang [1 ]
Wang, Ruixing
机构：
[1] Southeast Univ, Sch Mat Sci & Engn, Nanjing 211189, Jiangsu, Peoples R China
来源：
CONSTRUCTION AND BUILDING MATERIALS | 2016年 / 113卷
关键词：
Steel slag; Slaked lime; Microorganism; Mineralization; Brick; CARBONATE PRECIPITATION; CEMENTITIOUS PROPERTIES;
D O I：
10.1016/j.conbuildmat.2016.03.122
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
An experimental program was carried out to investigate the possibility of producing microbial mineralized steel slag bricks through mineralization. The properties of different steel slag bricks such as strength and carbon uptake were mainly investigated. Mineralization could significantly improve the strength, the optimal SL/SS ratio for the microbial mineralized steel slag bricks is 0.3. Through 3-h mineralization after demoulded, the highest compressive strength of the steel slag bricks can up to 17.1 MPa, flexural strength up to 4.22 MPa. Through X-ray diffraction (XRD), mercury-intrusion porosimetry (MIP), scanning electron microscopy (SEM), and differential thermal and thermogravimetric analysis (DTA/TG), the mechanism of the microbial mineralized steel slag bricks was analyzed and discussed. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：815 / 823
页数：9
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