【摘要】 针对我国不少地区出现天然砂资源短缺的问题,提出了用石屑代替河砂配制C20~C45混凝土的想法,并结合具体试验,探讨了石屑对混凝土工作性能的影响及石屑混凝土配合比的设计思路,试验结果表明石屑混凝土具有良好的性能。更多还原

【Abstract】 In light of the scarcity of natural sand resource in several districts in our country,this paper proposes the thoughts to replace river sand with rock dust to compound C20～C45 concrete,discusses the influences of rock dust on concrete working performance and the design concept of concrete-rock dust mixture ratio,and shows by experimental results that,rock dust concrete has well performance.更多还原