...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Magazine of Concrete Research >Mechanical properties of 5-year-old concrete prepared with recycled aggregates obtained from three different sources
【24h】

Mechanical properties of 5-year-old concrete prepared with recycled aggregates obtained from three different sources

机译：用三种不同来源的再生骨料制备的5年龄混凝土的机械性能

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The current paper presents the findings of a long-term study on the mechanical properties of concrete prepared with recycled aggregate obtained from three different sources. The concrete mixtures were prepared with a cement content of 355 kg/m~3 and water-to-cement (w/c) ratio of 0.55. The recycled aggregate was used as 0, 20, 50 and 100% replacements of natural aggregate. It was found that after 5 years of curing, the compressive strength and modulus of elasticity of the concrete made with recycled aggregates decreased with an increase in recycled aggregate content. Starting from the curing age of 1 year, however, the splitting tensile strengths of the concrete prepared with 100% recycled aggregate were higher than that of the natural aggregate concrete. The gain in strength and elastic modulus over time of the concrete prepared with recycled aggregates derived from pure crushed concrete was higher than the corresponding natural aggregate and recycled aggregates derived from other construction and demolition wastes. This is attributed to the improvement in bonding between the new cement matrix and the old recycled aggregates.
机译：本文介绍了对由三种不同来源的再生骨料制备的混凝土的力学性能进行长期研究的结果。制备的混凝土混合物的水泥含量为355 kg / m〜3，水灰比（w / c）为0.55。回收的骨料被用作天然骨料的0、20、50和100％的替代品。结果发现，养护5年后，再生骨料制成的混凝土的抗压强度和弹性模量随再生骨料含量的增加而降低。但是，从1年的固化年龄开始，使用100％再生骨料制备的混凝土的劈裂抗张强度要高于天然骨料混凝土的劈裂抗张强度。用纯碎混凝土制成的再生骨料制备的混凝土的强度和弹性模量随时间的增长要高于相应的天然骨料和其他建筑和拆除废物产生的再生骨料。这归因于新的水泥基体和旧的回收骨料之间的粘结性的改善。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号