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首页> 外文期刊>Australian journal of civil engineering >Laboratory evaluation of the characteristics of continuously reinforced concrete pavement incorporating recycled concrete aggregate
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Laboratory evaluation of the characteristics of continuously reinforced concrete pavement incorporating recycled concrete aggregate

机译：再生混凝土骨料连续增强混凝土路面特性的实验室评估

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摘要

Concrete aggregate have become scarce and costly, due to sudden increase in the need for new infrastructures. The use of waste materials in construction appears to be an alternative due to their low cost, environmental considerations and depleting source of quality aggregate. One of such attempts is made in this study. This research work presents the results of an experimental investigation carried out to evaluate the properties of new concrete pavement incorporating recycled concrete aggregate (RCA). Natural coarse aggregate (crushed granites) was replaced with six percentages (0, 20, 40, 60, 80 and 100%) of RCA. The slump, compressive strength, splitting tensile strength of the concrete containing different percentage of recycle concrete aggregate were determined. Test results showed that up to 100% replacement of coarse natural aggregate with RCA had no significant effect on any of the hardened concrete properties tested. These indicate that the use of quality RCAs in new concrete pavement production helps in solving a vital environmental issue apart from being a solution to the problem of inadequate concrete aggregates. The compressive strength results of concrete incorporating RCA at 0 to 100% replacement met the minimum 28 days strength specifications of relevant standards and manuals.
机译：由于对新基础设施的需求突然增加，混凝土骨料变得稀缺且昂贵。由于其低成本，环保考虑和质量骨料的消耗，在建筑中使用废料似乎是一种替代选择。在这项研究中进行了这样的尝试之一。这项研究工作提出了一项实验研究的结果，以评估结合了再生混凝土骨料（RCA）的新型混凝土路面的性能。天然粗骨料（碎花岗岩）被替换为六百分比（0％，20％，40％，60％，80％和100％）的RCA。确定了含有不同百分比的再生混凝土骨料的混凝土的坍落度，抗压强度，劈裂抗拉强度。测试结果表明，用RCA代替天然粗骨料最多100％对所测试的任何硬化混凝土性能均无明显影响。这些表明，在新型混凝土路面生产中使用高质量的RCA不仅可以解决混凝土骨料不足的问题，还可以解决重要的环境问题。掺有RCA的混凝土在0到100％替代时的抗压强度结果满足相关标准和手册的最低28天强度规范。

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