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首页> 外文期刊>Revista Eletrnica em Gesto, Educao e Tecnologia Ambiental >Concrete performance evaluation of coarse aggregate replacement by civil construction waste
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Concrete performance evaluation of coarse aggregate replacement by civil construction waste

机译:民用建筑垃圾粗骨料替代的具体绩效评价

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摘要

The construction sector is considered a major generator of environmental impacts due to the high consumption of natural resources and waste generation. Thus, this article aims to evaluate the performance of a concrete produced by the partial and total replacement of natural coarse aggregate by recycled coarse aggregate, derived from the concrete residue of buildings and demolitions. The study was made by comparing the compressive strength and absorption of three different concrete traces, keeping the water/cement factor of 0.60 and changing only the proportions of recycled coarse aggregate between 0%, 50% and 100%. The results showed that the higher the percentage of substitution, the greater the water absorption and the lower the resistance results concrete compression. This result was obtained due to the lighter characteristic of the recycled aggregate compared to the natural aggregate. It was concluded that the concrete produced with recycled aggregates could be used in nonstructural functions, giving an adequate destination to the construction and demolition waste and consequently reducing the extraction and consumption of natural resources and contributing for the sustainable development.
机译:由于自然资源和废物产生的高消耗,建设部门被认为是环境影响的主要发电机。因此,本文旨在评估通过源自建筑物和拆迁的混凝土残留物的再循环粗骨来评估由群体和完全更换天然粗骨的混凝土的性能。通过比较三种不同混凝土痕迹的抗压强度和吸收,使水/水泥因子保持0.60的水/水泥因子,并仅改变循环粗骨料的比例0%,50%和100%。结果表明,取代百分比越高,吸水率越大,电阻结果越低。由于与天然聚集体相比,由于再生骨料的较轻特性而获得该结果。得出结论是,用回收的聚集体产生的混凝土可用于非结构职能,为建设和拆迁废物提供足够的目的地,从而降低自然资源的提取和消费,为可持续发展做出贡献。

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