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Economic Impacts of Recycled Concrete Aggregate for Developing Nations: A Case Study in the Ethiopian Construction Industry

机译：再生混凝土骨料对发展中国家的经济影响：以埃塞俄比亚建筑业为例

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Today, the booming construction industry in Ethiopia is leading to an increased demolition of concrete structures whereby these demolished structures are disposed at landfills. The current practice is now creating a huge amount of construction and demolition waste over large landfills and is becoming the main source of shortage of land for infrastructure development. On the other hand, for the booming construction there is a huge demand of virgin aggregate for new concrete works. This paper discusses the potential use of demolished concrete from site-tested specimens as a recycled concrete aggregate (RCA) material for new concrete production. The study compares the cost of conventional concrete (CC) with recycled aggregate concrete (RAC). The output of this study will highly impact the growing construction industry and communities in Ethiopia thereby reducing waste, saving cost, conserving natural aggregates, building capacity, and setting quality standards.
机译：如今，埃塞俄比亚蓬勃发展的建筑业正在导致对混凝土结构的拆除越来越多，这些拆除的结构被安置在垃圾填埋场。目前的做法是在大型垃圾填埋场上产生大量的建筑和拆除废物，并成为基础设施建设用地短缺的主要来源。另一方面，对于蓬勃发展的建筑，对新混凝土工程的原始骨料有巨大的需求。本文讨论了从现场测试的标本中拆除的混凝土作为新混凝土生产中的再生混凝土骨料（RCA）材料的潜在用途。该研究将常规混凝土（CC）与再生骨料混凝土（RAC）的成本进行了比较。这项研究的结果将极大地影响埃塞俄比亚发展中的建筑业和社区，从而减少浪费，节省成本，保护自然骨料，建筑能力并制定质量标准。

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