TY - Journal of Yangtze River Scientific Research Institute A1 - CHEN Rong-fei, CHEN Chang-li T1 - Improved Formula for Calculating Parameters of Arctangent Curve Model for Autogenous Volume Deformation of MgO-admixed Concrete Y1 - 2020-10-01 JF - Journal of Yangtze River Scientific Research Institute JO - Journal of Yangtze River Scientific Research Institute SP - 161 EP - 164 VL - 37 IS - 10 UR - http://ckyyb.crsri.cn N1 - 10.11988/ckyyb.2019070464 ER -