Japan Cement Association

*Ruckthongsuk Sanpob¹、Fujita Takaki¹、Subpa-asa Prang²、Date Shigeyuki³(1. Master's course, Department of Architecture and Civil Engineering, Graduate school of Science and Technology, Tokai university、2. Doctoral's course, Department of Architecture and Civil Engineering, Graduate school of Science and Technology, Tokai university、3. Department of Civil Engineering, Faculty of Engineering, Tokai university)