硅酸盐学报2012，Vol.40Issue(5)：646-650,5.
0～20℃养护下硅酸盐水泥水化时钙矾石的生成及转变
Formation and Conversion of Ettringite During Hydration of Portland Cement from 0 to 20 ℃
摘要
Abstract
The formation and conversion of ettringite during the hydration of Portland cement cured at 0,5,10 and 20 ℃ were inves-tigated by X-ray diffraction and nuclear magnetic resonance,respectively.The results indicate that ettringite formed from 0 ℃ to 20 ℃ firstly increases and then decreases as the hydration time increases from 1 d to 180 d.The formation of ettringite varied with the curing temperatures.The content of ettringite formed reached a maximum either at 3 d at 10 ℃ and 20 ℃ or at 28 d at 0 ℃ and 5 ℃.For the curing age,however,the content of ettringite formed at 20 ℃（10.2%） exceeded that formed at other temperatures after 1 day,the content of ettringite formed at 10 ℃（12.1%） exceeded that formed at other temperatures after 3 d,and the content of ettringite formed at 0 ℃ from 3 d to 180 d was the highest.In addition,ettringite converted to monosulfate more slowly at lower temperatures.关键词
低温养护/硅酸盐水泥/钙矾石/物相转变Key words
low temperature curing/Portland cement/ettringite/phase conversion分类
化学化工引用本文复制引用
王培铭,徐玲琳,张国防..0～20℃养护下硅酸盐水泥水化时钙矾石的生成及转变[J].硅酸盐学报,2012,40(5):646-650,5.基金项目
国家“十一五”科技支撑计划 （）
国家自然科学基金（51102182）资助 （）
