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Study the effect of vibration mixing on the performances of full replacement recycled aggregate concrete

机译:研究振动混合对完全置换汇总混凝土性能的影响

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It is an urgent problem that the construction solid waste is difficult to be treated, and its recycling provides a way for its treatment. The quality of construction solid waste recycled aggregate is lower than that of natural aggregate, which limits its extensive application in building materials. In order to provide a new method for engineering application of recycled aggregate concrete, the influence of vibration mixing on the performances of full replacement recycled aggregate concrete were studied. The performance indexes of recycled aggregate concrete under ordinary mixing and vibration mixing were compared and analyzed. The experimental results show that compared with natural aggregate concrete, the slump of full replacement recycled aggregate concrete decreased by 58.8%, and 7d and 28d compressive strength decreased by 12.9% and 16.1%, and the splitting strength decreased by 30.6% and 20.1%, and the carbonation depth decreased by 91.5%; Compared with natural aggregate concrete using ordinary mixing, the slump of full replacement recycled aggregate concrete using vibration mixing decreased by 50.9%, the 7d and 28d compressive strength decreased by 6.9% and 10.9%, and the splitting strength decreased by 16.9% and 12.4%, and the 28d carbonation depth decreased by 34.9%. The results show that compared with ordinary mixing, vibration mixing can improve the performance of recycled aggregate concrete, which provides a reference for engineering application.
机译:难以治疗施工固体废物是一种紧迫的问题,其再循环提供了一种方法。建筑固体废物再循环的质量低于天然骨料的质量,这限制了其在建筑材料中的广泛应用。为了提供再生骨料混凝土的工程应用方法,研究了振动混合对完全置换再循环混凝土性能的影响。比较和分析了普通混合和振动混合下再生骨料混凝土的性能指标。实验结果表明,与天然骨料混凝土相比,完全置换的再生骨料混凝土的坍落度降低了58.8%,7D和28D抗压强度降低了12.9%和16.1%,分裂强度降低了30.6%和20.1%,碳酸化深度降低了91.5%;与使用普通混合的天然骨料混凝土相比,使用振动混合的全置置换蜕皮再循环混凝土减少了50.9%,7D和28D抗压强度降低了6.9%和10.9%,分裂强度降低了16.9%和12.4% ,28d碳酸化深度降低了34.9%。结果表明,与常规混合相比,振动混合可以提高再循环骨料混凝土的性能,为工程应用提供参考。

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