1. R&D Center, Tongyang Construction Materials Co., Ltd., No. 2822-1, Gimpo-dearo, Wolgot-myeon, Gimpo-si, Gyeonggi-do 10024, Republic of Korea
2. R&D Center, JNTINC Co., Ltd., No. 9, Hyundaikia-ro, 830 Beon-gil, Bibong-myeon, Hwaseong-City, Gyeonggi-do 18284, Republic of Korea
3. Department of Civil Engineering, Chungnam National University, Daejeon 34134, Republic of Korea