1. College of Civil Engineering, Taiyuan University of Technology, Taiyuan, Shanxi 030024, P. R. China
2. Shanxi Shengke Microorganism Building Materials Technology Co., Ltd., Taiyuan, Shanxi 030032, P. R. China
3. Department of Civil Engineering, Shanxi University, Tauyuan, Shanxi 030013, P. R. China
4. College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan, Shanxi 030024, P. R. China