1. Associate Professor, Institute of Building Materials, Dept. of Civil Engineering, Dalian Univ. of Technology, No. 2 Linggong Rd., Ganjingzi District, Dalian, Liaoning 116000, China.
2. Doctoral Student, Institute of Structural Engineering, Dept. of Civil Engineering, Dalian Univ. of Technology, No. 2 Linggong Rd., Ganjingzi District, Dalian, Liaoning 116000, China (corresponding author).
3. Postgraduate Student, Institute of Building Materials, Dept. of Civil Engineering, Dalian Univ. of Technology, No. 2 Linggong Rd., Ganjingzi, Dalian, Liaoning 116000, China.
4. Doctoral Student, Dept. of Civil Engineering and Engineering Mechanics, Columbia Univ., 2960 Broadway, New York, NY 10027-6902.