目前的收缩预测公式不适合于对自密实混凝土的收缩进行预测。在大量C30~C60自密实混凝土试验的基础上,考虑粉煤灰掺量和钢筋约束两种条件,提出新的对数型干缩预测公式。
None of the shrinkage formulas existing so far are suitable for predicting drying shrinkage of SCC ( self-compacting concrete ).A new shrinkage formula is suggested considering contribution of steel bar's limitation and fly ash content based on lots of tests on SCC of C30--C60.