浅谈预应力混凝土梁原材料质量控制-本科毕业论文范文 关键词：预应力混凝土梁;粗细骨料;外加剂;掺和剂。 [gap=492]Key words: prestressed concrete beams; coarse and fine aggregate; admixture; admixture
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此外，其防潮的另一种方法就是按一定的配合比在水泥、粗细骨料和水搅拌时加入防水剂。
An additional precaution against dampness is to incorporate a waterproofing admixture, properly proportioned, to the cement, aggregates and water before the concrete is mixed.
介绍一种大规模利用自燃煤矸石的方法，即利用其作活性混合材料、粗细骨料生产内隔墙板。
A method of extensively making use of spontaneous combustion gangue is introduced that is to use it as active mixture, coarse and fine aggregates to produce partition panel.
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