• 论文分别研究了木钙、钙、酒石酸、焦磷酸种常用缓凝剂对水泥凝结时间混凝土凝结时间强度影响

    The effects of five common set-retarders on setting time of cement paste and concrete and strength of concrete are studied.

    youdao

  • 论文分别研究了木钙、钙、酒石酸、焦磷酸种常用缓凝剂对水泥凝结时间混凝土凝结时间强度影响

    The effects of five common set-retarders on setting time of cement paste and concrete and strength of concrete are studied.

    youdao

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