Design Guidelines for Duarablility of Bonded CFRP Repair Strenthening of Concrete Beams





INTRODUCTION

Bonded Carbon Fiber Reinforced Polymer (CFRP) composite systems are widely used to repair or strengthen bridge structures. Their light weight and ease of field application make them an attractive alternative to traditional strengthening or replacement of bridge beams. Short-term laboratory test results of CFRP application demonstrate that improvement in flexural or shear strength is possible with these materials. (ACI 440) Concurrently, there is little comprehensive information on the deterioration of CFRP strengthening systems in field environments nor is there information allowing the estimation of the service life of these materials. A summary of relevant research on durability of CFRP systems is given in Chapter 2.







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