TEXT Fan Daorong1, Professor of Engineering, Luo Zhen2, Senior Engineer, Tang Xinyu*2,
Professor of Engineering‚ Lei Yunlu1, Senior Engineer
1Tianjin Sinoma Engineering Research Center Co. Ltd.‚ Tianjin/China
2Tianjin Cement Industry Design & Research Institute Co. Ltd.‚ Tianjin/China
*Corresponding author: