摘要
研究了水胶比、硅灰与磨细矿渣粉对由水泥浆体自干燥效应引起的自身相对湿度(autogenousrelativehumidity,ARH)变化与自收缩(autogenousshrinkage,AS)的影响,以及两者之间的相互关系.结果表明,水胶比是影响水泥浆体ARH变化与AS的主要因素,随水胶比的降低,水泥浆体ARH下降、AS增大;硅灰使得水泥浆体早期的ARH下降程度及AS增大,而磨细矿渣粉使得后期的ARH下降程度及AS增大;水泥浆体的ARH变化与相应的AS大小具有显著的线性相关性.
Effects of the ratio of water to cementitious material(mW/mB) , silica fume(SF) and ground blastfurnace slag(GBFS) on ARH change and AS of cement pastes due to selfdesiccation were studied, and their relationship was discussed. The results indicate, mW/mB is a main factor that affects ARH change and AS of cement paste. With the reduction of mW/mB, ARH change and AS of cement paste increase. SF increases these properties at early ages and GBFS enhances them at late ages. There is obvious linear correlation between ARH change and AS of cement paste.
出处
《建筑材料学报》
EI
CAS
CSCD
2003年第4期345-349,共5页
Journal of Building Materials
基金
国家重点基础研究(973)基金资助项目(2001CB610704)
同济大学工科基金资助项目
关键词
相对湿度
自收缩
自干燥
水泥浆体
relative humidity
autogenous shrinkage
self-desiccation
cement paste
