碱-矿渣胶凝材料基免蒸压多孔混凝土收缩性能的研究  

Research on shrinkage performance of non-autoclave porous concrete based on alkali-activated slag material

作　　者：柴大霞 曹德光[2] 

机构地区：[1]清远市质量计量监督检测所,广东清远511500 [2]广西大学材料科学与工程学院,广西南宁530004

出　　处：《混凝土》2013年第1期87-88,93,共3页Concrete

摘　　要：试验研究了养护条件下、轻骨料、温度和含水率等因素对加气混凝土收缩性能的影响,并进行了分析。研究结果表明:在自然养护条件下的体积收缩变化较大,28 d的收缩值为0.68%,但是180 d之后的体积收缩几乎没有变化;掺入轻骨料可以明显地减少多孔混凝土的收缩变形;随着温度的变化多孔混凝土的收缩率变化不大;随着含水率的减小多孔混凝土收缩率有不同程度的增大。The influence of curing condition, lightweight aggregate, temperature and watercontent coefficient on drying shrinkage of porous concrete based on alkaliactivated slag material.The results indicated that,under natural condition the concrete presented more vol umetric shrinkage, at the age of 28 day the shrinkage rate reach 0.68%, while the rate vary less when cured at 180 days.Lightweight aggre gate could decrease the shrinkage of porous concrete largely.The effect of temperature on the shrinkage of porous concrete was limited.The shrinkage of age grew at different level with decreasing of watercontent.

关 键 词：轻质混凝土 水玻璃 矿渣 加气剂 

分 类 号：TU528.04[建筑科学—建筑技术科学]