梁柱不同强度等级混凝土分别浇捣进行施工时，要避免邻接面形成冷缝。
When the beam columns with different strength concrete are poured respectively, cracks in the connecting faces should be avoided.
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。
The construction joint, temperature and shrinkage cracks should be controlled specially in mass concrete construction.
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