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Production of recycled sand from construction and demolition waste

机译：用建筑废料和拆除废料生产再生砂

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摘要

Existing construction waste recycling technologies and standards have long been applied in construction and demolition waste recycling. However, they have been essentially focused on the production and use of coarse recycled aggregates. This paper presents a technology that permits the production of high quality recycled sand. The selective removal with a vertical impact crusher of the cement paste attached to recycled aggregates and the potential improvements in the quality of the recycled sand that is produced were investigated. The results showed that the proposed method permitted the production of low-porosity sand from construction and demolition waste and may contributes to changing the construction recycling model.
机译：现有的建筑废料回收技术和标准已长期应用于建筑和拆除废料的回收中。但是，它们基本上集中在粗再生石料的生产和使用上。本文提出了一种允许生产高质量再生砂的技术。研究了使用立式冲击式破碎机选择性去除附着在再生骨料上的水泥浆以及生产的再生砂质量的潜在改善。结果表明，所提出的方法可以从建筑废料和拆迁废料中生产出低孔隙率的砂土，并可能有助于改变建筑回收模型。

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  • 来源
    《Construction and Building Materials》 |2013年第3期|1168-1173|共6页
  • 作者

    C. Ulsen; H. Kahn; G. Hawlitschek; E.A. Masini; S.C. Angulo; V.M. John;

  • 作者单位

    Department of Mining and Petroleum Engineering, Polytechnic School, University of Sao Paulo. Av. Prof. Niello Moraes, 2373, CEP 05508-030 Sao Paulo, SP, Brazil;

    Department of Mining and Petroleum Engineering, Polytechnic School, University of Sao Paulo. Av. Prof. Niello Moraes, 2373, CEP 05508-030 Sao Paulo, SP, Brazil;

    Department of Mining and Petroleum Engineering, Polytechnic School, University of Sao Paulo. Av. Prof. Niello Moraes, 2373, CEP 05508-030 Sao Paulo, SP, Brazil;

    Department of Mining and Petroleum Engineering, Polytechnic School, University of Sao Paulo. Av. Prof. Niello Moraes, 2373, CEP 05508-030 Sao Paulo, SP, Brazil;

    Institute for Technological Research. Av. Prof. Almeida Praia, 532, CEP 05508-901 Sao Paulo, SP, Brazil;

    Department of Construction Engineering, Polytechnic School, University of Sao Paulo. Av. Prof. Almeida Prado, 83, CEP 05508-900 Sao Paulo, SP, Brazil;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    recycled sand production; construction and demolition waste; mineral processing;

    机译：再生砂生产;建筑和拆除废物;选矿;

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