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在保持水胶比不变和7天抗压强度不变的条件下,分别研究了粉煤灰掺量对混凝土自生收缩的影响。研究结果显示:一定的范围内,在等水胶比和等强度条件下,混凝土的自生收缩都随着粉煤灰掺量的增大而减小。
The effect of fly ash content on autogenous shrinkage of concrete was studied under the condition of keeping the ratio of water to binder and the compressive strength of 7 days. The results show that the autogenous shrinkage of concrete decreases with the increase of fly ash content under a certain range of water-cement ratio and equal strength.