硅酸盐通报2017，Vol.36Issue(9)：2907-2912,2922,7.
氢氧化钙对硫铝酸盐水泥-粉煤灰复合胶凝材料的水化影响
Influence of Calcium Hydroxide on the Hydration of Sulphoaluminate Cement-Fly Ash Composite Cementitious Materials
摘要
Abstract
The influence of different contents of calcium hydroxide on the setting time , compressive strength and electrical resistivity of sulphoaluminate cement-fly ash composite cementitious materials were investigated .The results show that the setting time of cement paste was obviously shorten with the addition of calcium hydroxide .When the dosage of calcium hydroxide is 0 .5%, the setting time is the shortest , both the compressive strength at 1 d and 28 d are greatly enhanced .The compressive strength of cement paste at 28 d is 61.9%higher than the control when the dosage of calcium hydroxide is 2%.The electrical resistivity of cement pastes at 1 d decreases with the increase of calcium hydroxide .The maximum of the rate of electrical resistivity also decreases with the increase of calcium hydroxide , it indicates that calcium hydroxide accelerates the early hydration process of the sulphoaluminate cement paste blended with fly ash .The results from XRD analysis indicate that the amount of ettringite increases at 1 d with the addition of calcium hydroxide .At the age of 28 d, the amount of ettringite shows little change , but the compressive strength increases greatly , illustrates that fly ash contributes more to the development of strength .关键词
硫铝酸盐水泥/氢氧化钙/粉煤灰/强度/电阻率Key words
sulphoaluminate cement/calcium hydroxide/fly ash/strength/electrical resistivity分类
建筑与水利引用本文复制引用
徐鹏飞,孙艳,廖宜顺,殷梅子..氢氧化钙对硫铝酸盐水泥-粉煤灰复合胶凝材料的水化影响[J].硅酸盐通报,2017,36(9):2907-2912,2922,7.基金项目
国家自然科学基金(51608402) （51608402）
湖北省自然科学基金(2015CFB353) （2015CFB353）
湖北省教育厅科学技术研究项目(Q20141102) （Q20141102）
