Cheng YU, Ph.D., senior engineer, deputy director of R&D department of Sobute New Materials Co., Ltd. He obtained his doctor degree from Southeast University, co-supervised by Prof. Wei Sun and Karen Scrivener. He has been engaged in the research and application of low-carbon cementitious materials and concrete admixtures for a long time. He has led and participated in more than 10 scientific research projects including the National Natural Science Foundation and National Key Research and Development Program in China. He has published over 50 SCI/EI papers, obtained more than 20 patents of invention. His achievements have awarded 5 provincial level scientific and technological prizes, and have been applied to key national projects such as the Baihetan Hydropower Station, Beijing-Xiongan Intercity Railway, Jiangyin-Jingjiang Yangtze River Tunnel and so on.