超高强混凝土的化学收缩及干缩研究

A study on the Chemical Shrinkage and Drying Shrinkage of Super High Strength Concrete

针对超高强（≮１００ＭＰａ）混凝土配制特点，选择影响收缩的主要因素，通过试验，考察超高强混凝土的化学收缩和干缩。结果表明：超高强混凝土的干缩并不比普通混凝土高，值得注意的是其中化学收缩所占份额比一般混凝土高出许多。还发现掺磨细矿渣可以降低超高强混凝土的收缩。

Experiments have been done to study the chemical shrinkage and drying shrinkage of super high strength concrete on some main affeeting factors in accordance with its special compounding characteristics. Results show: the drying shrinkage of super high streugth concrete is not higher than common ones. Something remarkable is that the chemical shrinkage of super high strength concrete is much higher than common ones. Results also show, grinding granulated blast furnace slag can reduce the shrinkage of super high strength concrete.