作　　者： ; ; ; (蒋雪琴）; (谭世霖）; (周启源）;

机构地区： 广东省航盛建设集团有限公司广东广州511442

出　　处： 《水运工程》 2011年第6期20-24,共5页

摘　　要： 对高石粉含量石屑(石粉含量超过10%)全代砂配制混凝土的方法进行试验研究。研究结果证明:根据普通混凝土配合比设计的方法,以石屑中大于4.75 mm的部分取代石子,小于4.75 mm的部分取代河砂,通过增加胶凝材料和减水剂用量,适当调整水胶比和砂率的方法,能够配制出满足需要的C30和C40石屑混凝土;石屑的级配对混凝土强度和工作性能有较大的影响,应选取级配较好的石屑配制混凝土。工程应用表明:从石屑混凝土的拌制、运输、浇筑、养护等环节进行质量控制,能够得到技术经济性优良的石屑混凝土。 The experiments about the stone chip with high stone powder（the content of stone powder is larger than 10%） as a substitute of river sand were carried out.The results showed that the stone chip was used in preparing the C30 and C40 concrete by adding the usage of cementitious material,adding the usage of the water reducer,and adjusting the ratio of water to cementitious material and the fine aggregate percent of total aggregate.Such concretes were prepared under the condition that the particle larger than 4.75 mm in the stone chip was substituted the stone in part and the particle smaller than 4.75 mm in the stone chip was substituted the river sand in part.The grade of the stone chip had a greater influence on the workability and the strength of concrete,and the favorable grade stone chip should be used in preparing the concrete.The engineering application showes that the economic chip concrete can be made by controlling the quality of concrete during the batching,transporting,handling,and curing.

关 键 词： 石屑 石粉 石屑混凝土 配合比设计 质量控制

领　　域： [建筑科学]