Thus, research on measures for superfine sand concrete to get rid of plastic shrinkage cracks is of important practical significance.

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。

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Obviously, the addition of polypropylene fibers is significant in controlling plastic shrinkage cracks in the early stage and improving ductility for concrete at low fiber volume fraction.

低掺量的聚丙烯纤维掺入混凝土后可显著控制混凝土早期收缩裂缝，提高混凝土的耐久性。

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According to the causes of crack occurrence and the weather characteristics in the project area, it is key to prevent the cracks such as the plastic crack, dry crack and cold shrinkage crack.

根据混凝土面板产生裂缝的原因，并结合工程区的气候特点，认为控制面板的塑性收缩、干缩与冷缩裂缝是防止裂缝产生的重点。

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