INDUCTION PERIOD OF CEMENT HYDRATION UNDER ELECTRICAL METHOD
Early-age cement hydration had been investigated by the electrical resistivitymeasurement. Sequential experiments like thermal analysis and ion concentration analysis aswell as hydration heat tests were also carried out. Four hydration periods were divided by theresistivity change of the paste. The electrical resistivity of the paste grew quickly and Ca2-ionconcentration decreased rapidly at the beginning of induction period. Moreover. thedecomposition temperature of calcium hydroxide (CH) in the hydrated samples also hadnotable change at that time. Differential scanning calorimetry (DSC) and thermogravimetry(TG) analysis indicated that there was a transformation of high decomposition temperatureCH to low decomposition temperature CH when the induction period began. Results alsoshowed that the end of induction period had relation with growth of CH. The cementhydration mechanism during induction period and alike was discussed too.
Xiaohui Zeng Youjun Xie Tongbo Sui Zongjin Li
School of Civil Engineering & Architecture,Central South University,China;China Building Materials A School of Civil Engineering & Architecture,Central South University,China China Building Materials Academy,China The Hong Kong University of Science and Technology,Hong Kong
国际会议
南京
英文
217-224
2008-10-13（万方平台首次上网日期，不代表论文的发表时间）