本文介绍了泵送混凝土塑性裂缝产生的原因及预防和处理方法，对提高泵送混凝土施工水平具有重要的指导意义。
In this paper, the causes of the concrete plastic cracking are introduced, and the methods of its precautions and curing are provided.
以粉煤灰的火山灰效应、微集料效应分析为基础，分析研究了粉煤灰对混凝土塑性收缩、干缩、自缩和温度收缩裂缝的影响。
Based on analyzing the eruption and tiny aggregate effect of fly ash, the influence of fly ash on the shrinkage fissure of concrete is studied, caused by the plastic deformation, dry or temperature.
土料须具有足够的塑性，使之能适应坝体及坝基的变形而不致产生裂缝。
The material must have enough plasticity for avoiding cracks while dam and its foundation become deformed.
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