Influence of natural aggregates typology on recycled concrete strength properties

被引:32
作者
Laserna, S. [1 ]
Montero, J. [1 ]
机构
[1] Univ Castilla La Mancha, Higher Tech Sch Agr & Forestry Engn, Campus Univ S-N 020071, Albacete, Spain
关键词
Recycled aggregate concrete; Natural aggregates influence; Strength properties; Initial moisture state; COMPRESSIVE STRENGTH; DURABILITY;
D O I
10.1016/j.conbuildmat.2016.04.037
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
This paper reports a study on recycled aggregates concrete to analyze the influence of using two different types of natural aggregates, river aggregates and crushed aggregates, on the strength properties of recycled aggregates concrete. A total of twenty different mixes were analyzed with an effective water/cement ratio of 0.5 and cement contents of 260-300-340 kg/m(3) for recycled rates of coarse aggregates of 0-2050-100%. The results show that the strength property depends of the type of natural aggregate used and of the recycled replacement ratio. An increment of 15% on compressive strength was obtained for river natural aggregates and 100% recycled replacement ratio, while a decrease of approximately 10-25% was observed for mixtures with crushed natural aggregates performed under similar manufacturing conditions. (c) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码:78 / 86
页数:9
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