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首页> 外文期刊>Magazine of Concrete Research >A new approach in assessing cement mortar remains on recycled aggregate
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A new approach in assessing cement mortar remains on recycled aggregate

机译：评估水泥砂浆在再生骨料上的新方法

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摘要

There is a growing concern about environmental impacts resulting from construction activities. Accordingly, there is a pressing need for the adoption of recycled aggregate in Hong Kong. One of the key quality yardsticks in assessing the performance of recycled aggregate is the quantity of cement mortar that remains on the surface of the aggregate. There have been a number of methods designed to assess the mortar remains indirectly such as densities, water absorption rates, 10% fine values, etc. The present paper proposes a new method to assess the cement mortar remains and categorise the recycled aggregate using a classification system called CSAggregate with a CSAggre-gate index ranging from 0 to 100. A total of 10 samples of recycled aggregate collected from ten demolition sites and one ordinary aggregate were examined and compared. The reliability of the classification system was verified by correlating the index to water absorption rates and densities of aggregate.
机译：人们越来越关注建筑活动对环境的影响。因此，迫切需要在香港采用再生骨料。评估再生骨料性能的关键质量标准之一是残留在骨料表面的水泥砂浆量。已经设计了许多间接评估砂浆残留物的方法，例如密度，吸水率，10％细度值等。本论文提出了一种评估水泥砂浆残留物并使用分类对再生骨料进行分类的新方法。 CSAggre-gate指数范围从0到100的CSAggregate系统。检查并比较了从10个拆迁地点收集的10个回收骨料样品和1个普通骨料。通过将指标与吸水率和集料密度相关联，验证了分类系统的可靠性。

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  • 来源
    《Magazine of Concrete Research》 |2007年第6期|p.413-422|共10页
  • 作者

    V. W. Y. Tam; C. M. Tam;

  • 作者单位

    Griffith School of Engineering, Gold Coast Campus, Griffith University PMB 50, Goald Cost Mail Centre, Qld 9726, Australia;

  • 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 水泥工业;
  • 关键词

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