Properties of concretes produced with waste concrete aggregate
Properties of concretes produced with waste concrete aggregate
复制标题
DOI：
10.1016/j.cemconres.2003.12.019
复制
发表时间：
2004-08
影响因子：
11.4
通讯作者：
I. Topcu;Selim Şengel
中科院分区：
文献类型：
--
作者：
I. Topcu;Selim Şengel
只有通过有用的回收过程，才有可能以环境友好的方式处理废物处置问题，这在当今世界是一个很难处理的问题。因此，我们建议清理被毁建筑物的碎屑，以获得废混凝土骨料(WCA)，再用于混凝土生产，这可能是解决环境污染的部分办法。本研究对掺WCA混凝土的物理力学性能及其冻融耐久性进行了研究，并给出了试验结果。在对新鲜混凝土和硬化混凝土进行试验时，制备了含有30%、50%、70%和100%再生混凝土集料的混合料。之后，这些混合物经历了冻融循环。结果发现，使用不到30%的C14质量的WCA就可以生产出C16质量的混凝土。此外，还观察到通过WCA生产的混凝土的单位重量、工作性和耐久性与其冻融循环的耐久性成反比。
An environmentally friendly approach to the disposal of waste materials, a difficult issue to cope with in today's world, would only be possible through a useful recycling process. For this reason, we suggest that clearing the debris from destroyed buildings in such a way as to obtain waste concrete aggregates (WCA) to be reused in concrete production could well be a partial solution to environmental pollution. For this study, the physical and mechanical properties along with their freeze–thaw durability of concrete produced with WCAs were investigated and test results presented. While experimenting with fresh and hardened concrete, mixtures containing recycled concrete aggregates in amounts of 30%, 50%, 70%, and 100% were prepared. Afterward, these mixtures underwent freeze–thaw cycles. As a result, we found out that C16-quality concrete could be produced using less then 30% C14-quality WCA. Moreover, it was observed that the unit weight, workability, and durability of the concretes produced through WCA decreased in inverse proportion to their endurance for freeze–thaw cycle.