50年混凝土在再生骨料中的应用实例研究

Journal of Residuals Science & Technology Pub Date : 2016-01-01 DOI:10.12783/ISSN.1544-8053/13/4/S19

Zongping Chen, Jinjun Xu, Yuliang Chen, Chenggui Jing

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引用次数: 2

摘要

研究了使用50年再生粗骨料的再生骨料混凝土(RAC)的一些力学性能，并相对于普通骨料混凝土的应力-应变曲线进行了理论分析。通过11组RCA替换率为0% ~ 100%，间隔为10%的RCA替换率，制作混凝土棱镜试件66个，其中标准棱镜试件和非标准棱镜试件33个。在此基础上，研究了标准棱柱在28天和2年时的抗压强度、非标准棱柱的抗折强度、标准棱柱在28天最大压应力下的立方体抗折强度和应变，以及标准棱柱在2年时的泊松比。最后，提出了预测RAC峰值应变、应力-应变曲线及强度转换关系的解析表达式。

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A Case Study on Utilization of 50-year-old Concrete in Recycled Aggregate

This paper investigates some mechanical properties of recycled aggregate concrete (RAC) with 50-year-old recycled coarse aggregate (RCA), and theoretically analyzes the corresponding RAC stress-strain curves relative to those of normal aggregate concrete. Concrete prism specimens, including 66 standard prisms and 33 nonstandard ones, were fabricated and tested through 11 groups of RCA replacement ratios from 0% to 100% with an interval of 10%. On this basis, the standard prism compressive strength at ages of 28 days and two years, the flexural strength of the nonstandard prism, the cube strength after flexural test and the strain at the maximum standard prism compressive stress for 28 days, as well as Poisson’s ratio of the standard prisms for two years was investigated. Finally, analytical expressions were proposed for predicting the peak strain, the stress-strain curves of RAC and the strength conversion relationships.

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来源期刊

Journal of Residuals Science & Technology 环境科学-工程：环境

自引率

0.00%

发文量

审稿时长

>36 weeks

期刊介绍： The international Journal of Residuals Science & Technology (JRST) is a blind-refereed quarterly devoted to conscientious analysis and commentary regarding significant environmental sciences-oriented research and technical management of residuals in the environment. The journal provides a forum for scientific investigations addressing contamination within environmental media of air, water, soil, and biota and also offers studies exploring source, fate, transport, and ecological effects of environmental contamination.