The construction joint, temperature and shrinkage cracks should be controlled specially in mass concrete construction.

施工冷缝、温度和收缩裂缝是大体积混凝土施工中应重点控制的问题。

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So, how to find out the shrinkage reasons of merchandise concrete and control shrinkage cracks still to be solved problem.

如何找出混凝土的收缩机理，从而更好的控制收缩裂缝，是有待解决的问题。

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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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Thus his tables rarely show cracks and loosened miter joints resulting from wood shrinkage over time.

WSJ: Duncan Phyfe | Furniture for a Young Nation | By Barrymore Laurence Scherer