实际生产再生细骨料与天然砂性能对比分析  

Comparison and Analysis on Properties of Actually Produced Recycled Fine Aggregate and Natural Sand

作　　者：李丹乐 孙宇坤[1] 徐云肖[2] 

机构地区：[1]浙江工业大学建筑工程学院,浙江杭州310014 [2]杭州市建设工程质量安全监督总站,浙江杭州310005

出　　处：《城市道桥与防洪》2017年第5期279-281,292,共4页Urban Roads Bridges & Flood Control

摘　　要：选取实际生产的再生细骨料和天然砂进行颗粒级配、含泥量、泥块含量、压碎指标、表观密度、堆积密度、空隙率、吸水率、胶砂需水量比和强度比等性能试验,并对两者进行了对比。结果表明:再生细骨料物理性能不及天然砂,但所有试验所测指标基本能达到规范Ⅲ类的要求,混凝土工程实践也表明能够用适当比例的再生细骨料替代天然砂。The actually produced recycled fine aggregate and the natural sand are selected to carry out the property experiments of grain gradation, mud content, clay lump content, crushing index, apparent density,bulk density, void fraction, water absorption, water content ration and intensity ratio of glue sand, and the both are compared. The result shows that the physical property of recycled fine aggregate is not as good as the natural sand, but all experimental indexes can basically meet the requirements of Grade III in Specification.The concrete engineering practice also shows that the appropriate proportion of recycled fine aggregate can replace the natural sand.

关 键 词：天然砂 再生细骨料 物理性能 试验 

分 类 号：TU52[建筑科学—建筑技术科学]