首页> 外文期刊>Magazine of Concrete Research >Bond characteristics of concrete made of recycled aggregates from building demolition waste
【24h】

Bond characteristics of concrete made of recycled aggregates from building demolition waste

机译:建筑废料回收骨料制成的混凝土的粘结特性

获取原文
获取原文并翻译 | 示例
       

摘要

This paper presents the experimental results of pull-out tests conducted to determine the bond characteristics of concrete using aggregates made from the recycling of concrete waste from demolished buildings. Factors such as water-cement ratio (0.5, 0.4 and 0.3), bar diameter (empty set = 10, 12 and 16 mm), embedment length (2.5 empty set, 5 empty set and full depth of specimen) are considered. The pull-out test is performed on concrete produced from both natural aggregate and recycled concrete aggregate, and an assessment of the subsequent performance is made. Mechanical properties such as compressive strength, split tensile strength and modulus of rupture are also reported. The bond stress and slip at failure are determined by experimentation and a comparison is made. The recycled aggregate concrete performed better than the natural aggregate concrete in terms of normalised bond stress. Lowering the water-binder ratio has the effect of increasing the bond stress and slip values. With the increase in bar diameter and embedment length, a decrease in bond stress and increase in slip can be observed. An equation to determine the bond stress is proposed based on the experimental results obtained. A comparison is made with various models proposed in the literature.
机译:本文介绍了拉拔测试的实验结果,该拉拔测试用于确定混凝土的粘结特性,该粘结特性使用的是来自拆毁建筑物的混凝土废料回收的骨料。考虑诸如水灰比(0.5、0.4和0.3),钢筋直径(空集= 10、12和16 mm),嵌入长度(2.5空集,5空集和标本的整个深度)等因素。对由天然骨料和再生混凝土骨料生产的混凝土进行拉拔试验,并对随后的性能进行评估。还报告了机械性能,例如抗压强度,劈裂抗张强度和断裂模量。通过实验确定粘结应力和破坏时的滑动,并进行比较。就归一化粘结应力而言,再生骨料混凝土的性能优于天然骨料混凝土。降低水粘合剂比率具有增加粘结应力和滑动值的作用。随着杆直径和嵌入长度的增加,可以观察到粘结应力的减少和滑移的增加。根据获得的实验结果,提出了确定粘结应力的方程式。与文献中提出的各种模型进行了比较。

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