再生与天然骨料透水混凝土收缩性能试验研究  被引量:4

Shrinkage Performance of Permeable Concrete with Recycled and Natural Aggregate

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作  者:付立彬[1] 肖保辉[1] 付娟 FU Libin;XIAO Baohui;FU Juan(College of Civil Engineering, Huanghe S&T University, Zhengzhou, Henna 450063, Chin)

机构地区:[1]黄河科技学院建筑工程学院,河南郑州450063

出  处:《水利与建筑工程学报》2018年第2期32-35,共4页Journal of Water Resources and Architectural Engineering

基  金:河南省科技厅科技攻关计划项目(1621102310235)

摘  要:针对透水混凝土的收缩性能进行了试验研究,以不同砂率的变化作为变量,分别分析了再生骨料透水混凝土和天然骨料透水混凝土的收缩性能,研究了早期收缩阶段和硬化收缩阶段的收缩变形规律,并与普通混凝土的收缩进行了对比。结果表明:试件前期收缩均会经历一个膨胀阶段,约16h后达到膨胀峰值,28d后收缩值趋于稳定;各组提高砂率均能减少收缩值;砂率相同的情况下,前期和28d后的硬化收缩再生骨料组均比天然骨料组大。Experiments of the shrinkage of pervious concrete with sand rate as a variable were carried out in this paper,and the shrinkage properties of recycled aggregate pervious concrete and natural aggregate pervious concrete were analyzed.The shrinkage and deformation of the early contractile and contractile contractions were tested,and contrasted with shrinkage of ordinary concrete.The results show that early contraction of the specimen will undergo an expansion phase,expansion peak reached after about 16 hours,after 28 days the contraction value is stable;Improve the sand rate can reduce the shrinkage value;At the same sand rate,the hardened and contracted regenerated aggregate groups in the early stage and the 28 th day are larger than the natural aggregate group.

关 键 词:透水混凝土 再生骨料 强度变化 塑性和硬化收缩 

分 类 号:TU398[建筑科学—结构工程]

 

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