Comparative Study on the Behavior of Reinforced Concrete Beam Retrofitted with CFRP Strengthening Techniques

被引：17

作者：

Tiwary, Aditya Kumar ^{[1
]}

Singh, Sandeep ^{[1
]}

Kumar, Raman ^{[2
]}

Sharma, Kamal ^{[3
]}

Chohan, Jasgurpreet Singh ^{[2
]}

Sharma, Shubham ^{[2
,4
]}

Singh, Jujhar ^{[4
]}

Kumar, Jatinder ^{[5
]}

Deifalla, Ahmed Farouk ^{[6
]}

机构：

[1] Chandigarh Univ, Dept Civil Engn, Mohali 140413, India

[2] Chandigarh Univ, Univ Ctr Res & Dev, Mech Engn Dept, Mohali 140413, India

[3] GLA Univ, Inst Engn & Technol, Mathura 281406, India

[4] IK Gujral Punjab Tech Univ, Dept Mech Engn, Main Campus, Kapurthala 144603, India

[5] St Soldier Inst Engineer & Technol, Jalandhar 144001, Punjab, India

[6] Future Univ Egypt, Struct Engn & Construct Management Dept, New Cairo 11835, Egypt

来源：

POLYMERS | 2022年 / 14卷 / 19期

关键词：

beam; CFRP; ultimate load; deflection; retrofitting; failure mechanism; SELF-COMPACTING CONCRETE; RC BEAMS; BOND STRENGTH; FIBER CONCRETE; MODEL; SHEAR; PERFORMANCE; STRAIN; SUBSTRATE; ADHESION;

D O I：

10.3390/polym14194024

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Lateral reinforcement has a significant impact on the strength and ductility of concrete. Extra confinement is provided in this project by carbon fiber reinforced polymer (CFRP) sheets wrapped around the outside of reinforced concrete (RC) beams. To determine the failure criteria and maximum load-carrying capacity of beams, numerous specimens were cast and tested in a flexural testing machine. This paper presents the results of an experimental investigation of functionally damaged reinforced concrete beams repaired in flexure with CFRP sheets. The most essential variable in this study is the CFRP sheet scheme, and seven different strengthening schemes (B1 to B7) were explored in the experimental program. In conclusion, the findings of the study showed that flexural retrofitting of reinforced concrete beams with CFRP sheets is functionally effective, with restored strength and stiffness values roughly equivalent to or greater than those of the control beam (CB1). The efficiency of the flexural retrofitting mechanism appears to vary depending on the layout of the CFRP sheet. Steel rupture and concrete crushing were shown to be the most common failure modes in the investigation, causing CFRP sheets to break in retrofitted beams.

引用

页数：21

共 74 条

[41] Evaluation of the Strength of Slab-Column Connections with FRPs Using Machine Learning Algorithms [J].