1. School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P.R. China
2. College of Chemical and Environmental Engineering, Hunan City University, Yiyang 413000, P.R. China
3. School of Materials Science and Engineering, Central South University, Changsha 410083, P.R. China
4. Sany Heavy Industry Concrete Pump Institute, Changsha 410100, P.R. China