再生骨料对混凝土抗压强度的影响研究
Study on the Influence of Recycled Aggregate on the Compressive Strength of Concrete
刘敏1
作者信息
- 1. 山西科建工程质量检测有限公司,山西 太原 030006
- 折叠
摘要
为应对建筑垃圾剧增造成环境压力与资源过度开采的挑战,文中对不同骨料取代率下再生混凝土抗压强度的影响进行试验分析.结果显示,随着骨料取代率上升,混凝土强度逐渐下降,再生骨料中的旧砂浆和潜在损伤成为强度衰减的主要原因.同时,文中采用EDP模型预测混凝土的抗压性能,与试验结果进行对比,预测误差在1%～2.5%,表明EDP模型可作为预测再生混凝土性能的可靠工具.
Abstract
In order to cope with the challenges of environmental pressure and over-exploitation of resources caused by the increase of construc-tion waste,the influence of recycled concrete on compressive strength under different aggregate substitution rates was tested and analyzed.The results show that the strength of concrete decreases gradually with the increase of aggregate substitution rate,and the old mortar and potential damage in recycled aggregate are the main reasons for the strength attenuation.At the same time,the EDP model is used to predict the com-pressive properties of concrete.Compared with the experimental results,the prediction error is within 1%～2.5%,indicating that the EDP model can be used as a reliable tool to predict the properties of recycled concrete.
关键词
再生骨料/混凝土/骨料取代率/抗压强度/数值仿真Key words
Recycled aggregate/Concrete/Aggregate substitution rate/Compressive strength/Numerical simulation引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据