再生细骨料对含砖类再生砼的性能影响  

Performance Impact of the Recycled Fine Aggregates on Recycled Concrete Containing Brick

作　　者：李群山 赵超[2] 

机构地区：[1]许昌市政府投资项目代建制管理办公室,许昌461000 [2]许昌学院,许昌461000

出　　处：《建材世界》2015年第2期28-30,34,共4页The World of Building Materials

基　　金：河南省教育厅科学技术研究重点项目(14A560012)

摘　　要：该文使用普通天然骨料、经水洗再生骨料和未经水洗处理的再生骨料制备再生混凝土,分别测定其抗压强度、抗弯强度和弹性模量。试验结果表明,再生混凝土的抗弯强度在低水胶比时与一般混凝土有较大差距;但经由水洗过程,可改善再生骨料与水泥浆间的握裹情况,从而大幅提高其抗弯强度;同时,水灰比变化或使用不同再生骨材对混凝土弹性模量的影响并不明显。This paper adopts the common natural aggregates, water washed recycled aggregates and unwashed recy- cled aggregates to prepare the recycled concrete, and then respectively measure its compressive strength, flexure strength and elasticity modulus. The test shows that there is greater difference in the flexure strength between the re- cycled concrete and common concrete. But the washing process can improve the bond situation between the recycled aggregates and cement paste and hence greatly improve the flexure strength value, the influence of the water cement ratio change or the different recycled aggregates on the modulus of elasticity of concrete is not so obvious.

关 键 词：砖含量 再生混凝土 再生骨料 力学性能 

分 类 号：TU528[建筑科学—建筑技术科学]