Paper Title:
Retrofitting Pre-Cracked RC Beams Using CFRP and Epoxy Injections
  Abstract

The applications of Carbon Fiber Reinforced Polymers (CFRP) in construction have been grown drastically in the last 20 years because of the wide range of advantages and benefits of using CFRP in buildings, bridges and other type of structures. Nowadays, it is used for retrofitting concrete, masonry, steel and timber structures to resist both static and dynamic loads. Since the cost of replacing an existing structure is far more expensive than using FRP materials to strengthen it, CFRP strengthening techniques seem to be cost effective and easy to implement. Numerous experimental and numerical studies have been conducted to investigate the flexural and shear performance of uncracked reinforced concrete (RC) members externally strengthened with CFRP laminates or strips. However, the most practical usage of CFRP is to retrofit sections that had already been cracked and in need of maintenance. The fact that there have been limited studies to investigate the behavior and performance of pre-cracked beams strengthened with CFRP systems necessitated new and further investigations. In this study, the flexural performance of cracked RC beams retrofitted with CFRP plates and epoxy injections are investigated. The results of the cracked beams are compared with two control beams, a virgin un-strengthened beam and an uncracked beam strengthened with a CFRP plate covering 90% of the beam’s span. Load-midspan deflections for these beams were generated and compared. It is observed that the retrofitted cracked beams displayed more strength than the control beam. The results presented herein can aid designers in establishing a better understanding of the flexural performance of pre-cracked beams and how to economically retrofit such structural members.

  Info
Periodical
Key Engineering Materials (Volumes 471-472)
Edited by
S.M. Sapuan, F. Mustapha, D.L. Majid, Z. Leman, A.H.M. Ariff, M.K.A. Ariffin, M.Y.M. Zuhri, M.R. Ishak and J. Sahari
Pages
692-696
DOI
10.4028/www.scientific.net/KEM.471-472.692
Citation
R. Hawileh, A. K. Al-Tamimi, J.A. Abdalla, M.H. Wehbi, "Retrofitting Pre-Cracked RC Beams Using CFRP and Epoxy Injections", Key Engineering Materials, Vols. 471-472, pp. 692-696, 2011
Online since
February 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Xiao Yan Xiong, Miao Zhang, Xiao Ping Li, Shao Juan Yu
Abstract:Based on chaotic characteristics in vertical direction of vibrating screen sides, nonlinear methods were proposed to diagnose crack of...
1258
Authors: Ying Lin Li, Li Hui Cao, Lian He Yang
Abstract:Weft knitted pattern design is one of the most important compositions of textile CAD. Traditional pattern design has a higher request on...
576
Authors: Yong Hua Zhang, Jian Hui He, Guo Qing Zhang
Abstract:This paper aims to understand influence of the obliquity of fin ray on its motion performance. An environment-friendly propulsion system...
267
Authors: Ioana Pintilie, Francesco Moscatelli, Roberta Nipoti, Antonella Poggi, Sandro Solmi, Lars S. Løvlie, Bengt G. Svensson
Abstract:The effect of nitrogen (N) introduced by ion implantation at the SiO2/4H-SiC interface on the capacitance of the MOS capacitors is...
326
Authors: Yi Mei, Fang Ping Wang, Qiao Ying Liu, Yu Tao Mao
Abstract:To solve the thermal deformation caused by thermal load of heavy machinery gearbox, it is established that coupled analysis model to carry...
651