The purpose of this paper is to solve the problem of high water cement ratio during construction and low water cement ratio during solidification.
英
美
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摘要目的通過(guò)將電滲技末引入到混凝土施工過(guò)程,解決混凝土工程中施工要求的大水灰質(zhì)量比與使用性能要求的小水灰質(zhì)量比之間的矛盾問(wèn)題。
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国内精品美女A∨在线播放xuan