Study on Mechanical Response and Constitutive Model of Rubber Concrete under Impact Load and Water Content Coupling

Author:

Ling Ru1,Zhou Chenhao2ORCID,Wu Rui1,Xie Ying1,Wu Chao3

Affiliation:

1. School of Architectural Engineering, Anhui Water Conservancy Technical College, Hefei 231603, China

2. Department of Civil Engineering, Xi’an Jiaotong-Liverpool University, Suzhou 215123, China

3. State Key Laboratory of Hydroscience and Hydraulic Engineering, Tsinghua University, Beijing 100084, China

Abstract

Impact tests were implemented on concrete with five different types of rubber content utilizing a separated Hopkinson bar with a 50 mm diameter for investigating the mechanical performance of and damage variations in rubber concrete under the coupling effect of water content and impact load. The findings indicate that regular concrete is commonly stronger than rubber concrete, but rubber concrete has better plasticity. At the same time, with an increase in water content, the peak stress of rubber concrete increases gradually, among which RC-6-3 exhibits better mechanical behavior. Water content and rubber content have a significant influence on the fractal dimension of rubber concrete, showing that the fractal dimension is proportional to the amount of glue and inversely proportional to the water content, and RC-12-2 can be used to judge the damage degree of a specimen. As the content of water and rubber grows, so does the rate of energy use. The ratio of transmitted to incident energy decreases gradually as the rubber content increases and is enhanced as the water content is elevated. Among the specimens, tests on RC-9 resulted in the opposite conclusion. In the same water content state, there is a negative association between the content of rubber and the ratio of reflected energy to incident energy. In the natural state, RC-6 rubberized concrete exhibits a significant downward inflection point in the ratio of reflected energy to incident energy. Finally, based on the unified strength theory, a new damage constitutive model of rubber concrete is established and verified.

Funder

Natural Science Project of Anhui Province

Publisher

MDPI AG

Reference47 articles.

1. Prospect of New Business Forms of Construction Engineering in the Era of Carbon Neutralization;Yang;Ind. Constr. Acad. Exch. Conf.,2022

2. Properties and utilizations of waste tire rubber in concrete: A review;Siddika;Constr. Build. Mater.,2019

3. A review of research on new types of elastic concrete;Han;Tianjin Constr.,2004

4. Dynamic mechanical properties of fiber-reinforced concrete: A review;Wu;Constr. Build. Mater.,2023

5. Review of the development status of rock burst disaster prevention system in China;Wu;J. Cent. South Univ.,2023

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3