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首页> 外文期刊>E3S Web of Conferences >Mechanical Properties of Lightweight Concrete Using Recycled Cement-Sand Brick as Coarse Aggregates Replacement
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Mechanical Properties of Lightweight Concrete Using Recycled Cement-Sand Brick as Coarse Aggregates Replacement

机译：再生水泥砂砖替代粗骨料的轻质混凝土的力学性能

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摘要

This paper presents the result of replacing natural course aggregate with recycled cement-sand brick (CSB) towards the mechanical properties of concrete. Natural aggregates were used in this study as a control sample to compare with recycled coarse aggregates. This study was also carried to determine the optimum proportion of coarse aggregates replacement to produce lightweight concrete. Besides, this study was conducted to observe the crack and its behaviour development during the mechanical testing. Through this study, four types of concrete mixed were prepared, which were the control sample, 25%, 50% and 75% replacement of CSB. The test conducted to determine the effectiveness of recycled CSB as coarse aggregates replacement in this study were slump test, density measurement, compression test, and flexural test and. The strength of concrete was tested at 7 days and 28 days of curing. From the results obtained, the optimum proportion which produced the highest strength is 25% replacement of recycled CSB. The compressive and flexural strength has decreased by 10%-12% and 4%-34% respectively compared to the control sample. The presence of recycled coarse aggregates in sample has decreased the density of concrete by 0.8%-3% compared to the control sample.
机译：本文介绍了用再生的水泥沙砖（CSB）代替自然过程的集料对混凝土的机械性能的影响。天然骨料在本研究中用作对照样品，与回收的粗骨料进行比较。还进行了这项研究，以确定生产轻质混凝土的粗骨料替代的最佳比例。此外，本研究旨在观察机械测试过程中的裂纹及其行为发展。通过这项研究，制备了四种类型的混凝土，分别是对照样品，CSB的25％，50％和75％的替代品。为确定再生CSB作为粗骨料替代品的有效性而进行的测试是坍落度测试，密度测量，压缩测试和弯曲测试。在固化7天和28天时测试了混凝土的强度。从获得的结果来看，产生最高强度的最佳比例是回收CSB的25％。与对照样品相比，抗压强度和抗弯强度分别降低了10％-12％和4％-34％。与对照样品相比，样品中存在再生粗骨料使混凝土的密度降低了0.8％-3％。

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