粉煤灰掺量对碱激发矿渣砂浆减缩特性研究  

Reducing the Shrinkage of Alkali-Activated Slag Mortar by Adding Fly Ash

作　　者：王东平[1] 陈佩圆 王亮[1] 李孝坤[1] 沈朋辉 

机构地区：[1]安徽理工大学土木建筑学院,淮南232001

出　　处：《硅酸盐通报》2018年第2期701-705,共5页Bulletin of the Chinese Ceramic Society

基　　金：安徽省科技攻关计划(1501041123)

摘　　要：研究粉煤灰掺量对碱激发矿渣砂浆的凝结时间、抗压强度、化学收缩和自收缩的影响因素和影响规律。结果表明,加入粉煤灰不仅能有效改善碱激发矿渣砂浆凝结快,收缩变形大的问题,同时也能够解决碱激发粉煤灰砂浆在常温条件下早期强度低和强度发展缓慢等问题。配比不同掺量的粉煤灰,以寻求最佳的掺量,在保证碱激发矿渣砂浆强度的同时提高减缩效果。The effects of fly ash content on the setting time, compressive strength, chemical shrinkage and autogenous shrinkage of alkali-activated slag mortar were studied. The results show that the addition of fly ash can not only effectively improve the problem of rapid condensation and large shrinkage deformationof alkali-activated slag mortar, but also can solve the problems such as low early strength and slow strength development of alkali-activated fly ash mortar. With different content of fly ash, to seek the best content, to ensure that strength of alkali-activated slag mortar while reducing shrinkage effect.

关 键 词：碱激发矿渣 粉煤灰掺量 抗压强度 收缩 

分 类 号：TU528[建筑科学—建筑技术科学]