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Journal of Zhejiang University SCIENCE A 2005 Vol.6 No.3 P.166~174

10.1631/jzus.2005.A0166


Strengthening reinforced concrete beams using prestressed glass fiber-reinforced polymer-Part I: Experimental study


Author(s):  HUANG Yue-lin, WU Jong-hwei, YEN Tsong, HUNG Chien-hsing, LIN Yiching

Affiliation(s):  Department of Civil Engineering, National Chung-Hsing University, 40227, Taiwan, China

Corresponding email(s):   ylhuang@dragon.nchu.edu.tw

Key Words:  Strengthening, Prestressed glass fiber reinforcement polymer, Modulus of Elasticity, R. C. beams


HUANG Yue-lin, WU Jong-hwei, YEN Tsong, HUNG Chien-hsing, LIN Yiching. Strengthening reinforced concrete beams using prestressed glass fiber-reinforced polymer-Part I: Experimental study[J]. Journal of Zhejiang University Science A, 2005, 6(3): 166~174.

@article{title="Strengthening reinforced concrete beams using prestressed glass fiber-reinforced polymer-Part I: Experimental study",
author="HUANG Yue-lin, WU Jong-hwei, YEN Tsong, HUNG Chien-hsing, LIN Yiching",
journal="Journal of Zhejiang University Science A",
volume="6",
number="3",
pages="166~174",
year="2005",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.2005.A0166"
}

%0 Journal Article
%T Strengthening reinforced concrete beams using prestressed glass fiber-reinforced polymer-Part I: Experimental study
%A HUANG Yue-lin
%A WU Jong-hwei
%A YEN Tsong
%A HUNG Chien-hsing
%A LIN Yiching
%J Journal of Zhejiang University SCIENCE A
%V 6
%N 3
%P 166~174
%@ 1673-565X
%D 2005
%I Zhejiang University Press & Springer

TY - JOUR
T1 - Strengthening reinforced concrete beams using prestressed glass fiber-reinforced polymer-Part I: Experimental study
A1 - HUANG Yue-lin
A1 - WU Jong-hwei
A1 - YEN Tsong
A1 - HUNG Chien-hsing
A1 - LIN Yiching
J0 - Journal of Zhejiang University Science A
VL - 6
IS - 3
SP - 166
EP - 174
%@ 1673-565X
Y1 - 2005
PB - Zhejiang University Press & Springer
ER -


Abstract: 
This work is aimed at studying the strengthening of reinforced concrete (R. C.) beams using prestressed glass fiber-reinforced polymer (PGFRP). Carbon fiber-reinforced polymer (CFRP) has recently become popular for use as repair or rehabilitation material for deteriorated R. C. structures, but because CFRP material is very stiff, the difference in CFRP sheet and concrete material properties is not favorable for transferring the prestress from CFRP sheets to R. C. members. Glass fiber-reinforced polymer (GFRP) sheets with modulus of Elasticity quite close to that of concrete was chosen in this study. The load-carrying capacities (ultimate loads) and the deflections of strengthened r. C. beams using GFRP and PGFRP sheets were tested and compared. T- and ⊥-shaped beams were used as the under-strengthened and over-strengthened beams. The GFRP sheets were prestressed to one-half their tensile capacities before being bonded to the T- and ⊥-shaped r. C. beams. The prestressed tension in the PGFRP sheets caused cambers in the r. C. beams without cracks on the tensile faces. The PGFRP sheets also enhanced the load-carrying capacity. The test results indicated that T-shaped beams with GFRP sheets increased in load-carrying capacity by 55% while the same beams with PGFRP sheets could increase load-carrying capacity by 100%. The ⊥-shaped beams with GFRP sheets could increase load-carrying capacity by 97% while the same beams with PGFRP sheets could increase the loading-carrying capacity by 117%. Under the same external loads, beams with GFRP sheets underwent larger deflections than beams with PGFRP sheets. While GFRP sheets strengthen r. C. beams, PGFRP sheets decrease the beams’ ductility, especially for the over-strengthened beams (⊥-shaped beams).

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

Reference

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Open peer comments: Debate/Discuss/Question/Opinion

<1>

filippou christiana@student<filippouch@gmail.com>

2014-04-08 22:33:51

PERFECT ARTICLE

Aslam@UM<aslam\_bhanbhro13@yahoo.com>

2013-04-01 09:50:04

Nice paper

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