The comparison experiment was done between the super-fine sand concrete and the medium sand concrete with the same sand rate and different water-cement ratio.
用特细砂作为细骨料，在实验室中配制不同的水灰比、相同砂率的普通特细砂混凝土和采用相同水灰比、用中砂作为细骨料配制出的中砂普通混凝土进行比较试验。
参考来源 - 特细砂混凝土的力学性能研究·2,447,543篇论文数据，部分数据来源于NoteExpress
因此，对特细砂混凝土塑性收缩防裂措施进行研究，具有重要的现实意义。
Thus, research on measures for superfine sand concrete to get rid of plastic shrinkage cracks is of important practical significance.
目前关于塑性收缩裂缝的研究几乎都集中在中粗砂混凝土，对于特细砂混凝土塑性收缩裂缝及其相关问题的研究几乎没有。
But almost all the attention of the plastic shrinkage crack are focus on the medium and coarse sand concrete and the study of super fine one not found.
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