|Table of Contents|

Test on Performance of Damaged RC Beams Strengthened with CFR(PDF)

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

Issue:
2008年04期
Page:
116-122
Research Field:
Publishing date:
2008-12-20

Info

Title:
Test on Performance of Damaged RC Beams Strengthened with CFR
Author(s):
CHEN Feng-shan1;  ZHAO Guo-fan2;  WANG Zhao-zhong3
1. School of Civil Engineering, Dalian Fisheries University,Dalian 116023, Liaoning, China; 2. School of Civil and Hydraulic Engineering, Dalian University of Technology, Dalian 116024, Liaoning, China; 3. CCCC Fourth Harbor Engineering Ltd, Guangzhou 510230, Guangdong, China
Keywords:
CFRP;  corrosion crack;  pre-loading crack;  RC beam
PACS:
TU352
DOI:
-
Abstract:
To research the performance of damaged reinforced concrete(RC)beams strengthened with carbon fiber reinforced polymer(CFRP), loading tests on 17 beams were carried out. The test results indicate that there is little effect of corrosion damage and pre-loading crack damage on properties of beams strengthened with CFRP; bonding longitudinal and transverse CFRP simultaneously can greatly improve the capacity of beams and the function of CFRP mainly performs in phase with crack. In addition, the load and deflection curve of RC beams strengthened with CFRP is formed by two beelines for those experienced corrosion and pre-loading damage; the test results are a little higher than the calculated values of capacities for the test beams based on the shear-resistance calculating formula in Technical Specification for Strengthening Concrete Structures with Carbon Fiber Reinforced Polymer Laminate(CECS 146:2003)for safer purpose, a rational reduction factor is suggested to be introduced into calculating formula for CFRP strengthening damaged RC beams by refering to formula in the national specification.

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Memo:
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Last Update: 2008-12-20