Basic creep behavior and modeling of recycled coarse and fine aggregate concrete

被引：11
作者：
Zhao, Mu-Zi [1 ,2 ]
Zhang, Huan [3 ,4 ]
Geng, Yue [3 ,4 ]
Lehman, Dawn E. [5 ]
Wang, Yu-Yin [3 ,4 ]
机构：
[1] Harbin Inst Technol, Sch Civil Engn, Harbin 150090, Peoples R China
[2] Bldg & Construct Shenzhen Co Ltd, Cent Res Inst, MCC Grp, Shenzhen 518055, Peoples R China
[3] Minist Educ, Harbin Inst Technol, Key Lab Struct Dynam Behav & Control, Harbin 150090, Peoples R China
[4] Minist Ind & Informat Technol, Harbin Inst Technol, Key Lab Smart Prevent & Mitigat Civil Engn Disaste, Harbin 150090, Peoples R China
[5] Univ Washington, Dept Civil & Environm Engn, 204 More Hall, Seattle, WA 98195 USA
来源：
CONSTRUCTION AND BUILDING MATERIALS | 2023年 / 389卷
基金：
中国国家自然科学基金; 国家重点研发计划; 中国博士后科学基金;
关键词：
Basic creep; Recycled aggregate concrete; Coarse recycled aggregate; Fine recycled aggregate; Compounding effect; MECHANICAL-PROPERTIES; COMPRESSIVE STRENGTH; STRUCTURAL CONCRETE; FLEXURAL BEHAVIOR; TENSILE-STRENGTH; MODULUS;
D O I：
10.1016/j.conbuildmat.2023.131724
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
This paper aimed to experimentally investigate the influence of fine recycled aggregate (FRA) replacement ratio on the basic creep of RAC with different coarse recycled aggregate (CRA) replacement ratios and water-to-cement ratios (w/c), i.e., the compounding effect among FRA, CRA and w/c. To achieve this, fifteen groups of specimens were prepared for long-term tests to measure the final basic creep value and basic creep development trend for concretes with different FRA/CRA replacement ratios and w/c. Test results showed that the FRA, CRA and w/c had a significant compounding effect on the basic creep behavior of RAC. Based on the traditional B4 model by Bazant (2014), a new basic creep model was derived to account for all the aforementioned influences. The model was then benchmarked against all the collected test data.
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页数：17
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