Distribution of Calcium Carbonate in the Process of Concrete Self-healing

作     者：钱春香 LI Ruiyang LUO Mian CHEN Huaicheng 

作者机构：School of Materials Science and EngineeringSoutheast UniversityNanjing 211189China Research Institute of Green Construction MaterialsSoutheast UniversityNanjing 211189China 

出 版 物：《Journal of Wuhan University of Technology(Materials Science)》 (武汉理工大学学报（材料科学英文版）)

年 卷 期：2016年第31卷第3期

页      面：557-562页

核心收录：

学科分类：08[工学] 081304[工学-建筑技术科学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0813[工学-建筑学] 0702[理学-物理学] 

基　　金：Funded by the National Natural Science Foundation of China(No.51178104) 333 Project of Jiangsu PhD Program’s Foundation of Ministry of Education of China(No.20110092110033) 

主　　题：microbial concrete cracks self-healing calcium carbonate deposition 

摘      要：The complete deposition distribution process of calcium carbonate is summarized in three directions of cracks. Distribution of calcium carbonate in the self-healing process of microbial concrete is studied in detail, with the help of a variety of analytical techniques. The results show that carbonate deposits along the x-axis direction of the cracks. The farther from the crack surfaces of concrete matrix in x-axis direction, the more the content of the substrate, the less content of calcium carbonate. Gradual accumulation of calcium carbonate along the y-axis direction is like building a house with bricks. Different repair points are gradually connected, and ultimately the whole of cracks are completely filled. In the z-axis direction, calcium deposits on the surface of fracture direction, when the crack is filled on the surface, because the internal crack hypoxia in the depths of cracks hardly produces calcium carbonate.