中低强度自密实混凝土干缩与化学结合水的关系研究

Relations between the shrinkage and chemical combined water of medium strength self-compacting concrete

进行了中低强度自密实混凝土的配制,分析了自密实混凝土的收缩与化学水损失、水泥石水化程度的关系。试验表明:浆体化学结合水与自密实混凝土的收缩之间存在良好的对应关系。随着水泥化学结合水量的增大,自密实混凝土的收缩值也增大。随着粉煤灰掺量的增加,化学结合水量也就相应降低。

The medium strength self-compacting concrete is prepared, analyzing the relationship between the contraction and chemical water loss, the degree of cement hydration.Experiments show that：good relationship exists between slurry chemical combination of water and the contraction of self-compacting concrete.Chemical combination with water of cement increases,the contraction of self-compacting concrete increased.With the increasing in fly ash, chemical combination of water will be reduced accordingly.