研究了膨润土对新拌砂浆和硬化砂浆的改性效果。

Modified effect was studied on fresh mortar and hardens mortar with bentonite.

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新拌混凝土在开始几天和几周时间内强度增长很快。

Fresh concrete gains strength most rapidly during the first few days and weeks.

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但物理激发对新拌混凝土工作性造成一定的不利影响。

But physical excitation has a bad effect on the workability of fresh concrete.

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