The results show that a longer expansion period and a better expansion could be achieved with the blast furnace slag as expansion agent.

结果表明，用钢渣做膨胀剂，膨胀龄期较长，膨胀状况良好。

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The results show that a longer expansion period and a better expansion could be achieved with the blast furnace slag as expansion agent.

结果表明，用钢渣做膨胀剂，膨胀龄期较长，膨胀状况良好。

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