再生卵石骨料混凝土力学性能试验研究
作者:
作者单位:

作者简介:

通讯作者:

中图分类号:

基金项目:

国家自然科学基金资助项目(51268004);“八桂学者”建设工程专项经费资助项目;广西科技攻关资助项目(桂科攻12118023 3);广西自然科学基金资助项目(2012GXNSFAA053203,2013GXNSFDA019025);广西理工科学实验中心重点项目(LGZX201102)


Mechanical Properties of Recycled Pebble Aggregate Concrete
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    采用以卵石为粗骨料的原生混凝土作为再生混凝土来源,通过破碎、筛分获取再生卵石粗骨料,并用其全部或部分取代天然卵石来配制再生混凝土.以再生卵石粗骨料取代率为变化参数,设计99个试件,分别进行立方体抗压强度、棱柱体抗压强度、抗折强度、弹性模量和泊松比等力学性能试验.观察了试件的破坏形态,获取其受力破坏全过程的应力应变曲线及峰值应力、峰值应变、弹性模量和泊松比等特征参数,并提出了再生卵石骨料混凝土各项强度指标之间的换算关系公式.结果表明:再生卵石骨料混凝土的各项强度指标与天然卵石骨料混凝土相比均有略微增大之势;不同取代率下,再生卵石骨料混凝土应力应变曲线下降段比天然卵石骨料混凝土陡峭;再生卵石骨料混凝土弹性模量均小于天然卵石骨料混凝土,泊松比与天然卵石骨料混凝土接近.

    Abstract:

    Primary concrete with pebble coarse aggregate was used as the source of recycled pebble, all or part of natural pebble was replaced with recycled pebble to prepare concrete. 99 specimens were designed with different replacement rate. The prism compressive strength, cube compressive strength, flexural strength, elastic modulus and Poissons ratios of specimens were tested. The failure pattern, stress strain curves, peak stress, peak strain, elastic modulus and Poissons ratios of specimens were determined. Based on the test data, the conversion relationship of various strength indexes was proposed. The research results show that comparing with natural pebble concrete, the strength of recycled pebble concrete slightly increases; in different replacement ratio, the stress strain curves of recycled pebble concrete are steeper than those of natural pebble concrete at descending section; the elastic modulus, deformation performance are lower than those of natural pebble concrete, but Poissons ratio is close.

    参考文献
    相似文献
    引证文献
引用本文

陈宗平,周春恒,陈宇良,黄靖,薛建阳.再生卵石骨料混凝土力学性能试验研究[J].建筑材料学报,2014,17(3):465-470

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2013-02-02
  • 最后修改日期:2013-05-14
  • 录用日期:
  • 在线发布日期: 2014-06-25
  • 出版日期: