Flexural behavior of RC beams externally bonded with polyethylene terephthalate (PET) fiber reinforced polymer (FRP) laminates

被引：33

作者：

Hawileh, Rami A. ^{[1
]}

Mhanna, Haya H. ^{[1
]}

Al Rashed, Ahmad ^{[1
]}

Abdalla, Jamal A. ^{[1
]}

Naser, M. Z. ^{[2
]}

机构：

[1] Amer Univ Sharjah, Dept Civil Engn, Sharjah, U Arab Emirates

[2] Clemson Univ, Glenn Dept Civil Engn, 312 Lowry Hall, Clemson, SC 29634 USA

来源：

ENGINEERING STRUCTURES | 2022年 / 256卷

关键词：

Polyethylene terephthalate; PET; CFRP; Reinforced concrete; Flexural strengthening; Externally bonded reinforcement; Ductility; CAPACITY; MEMBERS;

D O I：

10.1016/j.engstruct.2022.114036

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

This paper presents an experimental study on the flexural behavior of reinforced concrete (RC) beams externally strengthened with a unique and sustainable type of fiber reinforced polymer (FRP), named polyethylene terephthalate (PET). Compared to conventional FRPs, PET-FRP is characterized by its large rupture strain and low elastic modulus. The flexural behavior of RC beams strengthened with one and two layers of PET-FRP was compared to that strengthened with one carbon FRP (CFRP) layer and an unstrengthened beam specimen. Test results showed that the specimens strengthened with two PET-FRP layers and one CFRP layer displayed equal and significant strength enhancement of 47% compared to the unstrengthened beam. However, the former exhibited higher ductility than the latter by 33%. Lower strength enhancement was depicted in the specimen strengthened with one PET-FRP layer. Despite that, the ductility of the PET-strengthened beam was substantial, which even outweighed that of the unstrengthened beam by 9%. The results of this study showed that PET-FRP is a promising strengthening material that improves structural performance and provides a sustainable alternative to conventional FRP strengthening systems.

引用

页数：10

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