Design recommendations for the use of FRP for reinforcement and strengthening of concrete structures

Abstract

The use of fibre reinforced polymer, FRP, as reinforcement for concrete structures has been growing rapidly in recent years. This paper summarizes the current state of knowledge of these materials and highlights the various FRP strengthening techniques that have been used for concrete and masonry structures. Material characteristics of FRP and fundamental design considerations are discussed. Selection of the appropriate materials and their corresponding advantages and disadvantages are highlighted. Design philosophies for concrete members reinforced and/or strengthened with FRP are enumerated. Fundamental flexure, shear and bond behaviour of concrete members reinforced and/or strengthened with FRP according to the current ACI design guidelines are examined. The paper also reviews the durability aspects of FRP and describes selected field applications of these materials. Copyright © 2003 John Wiley & Sons, Ltd.

Flexural Strengthening of RC Slabs Using a Hybrid FRP-UHPC System Including Shear Connector

“…This is due to the relatively low cost of strengthening compared to new construction in addition to the minimal impact that strengthening will have on the system. Two other major benefits include the short time of application and ability to maintain use of the structure during strengthening [4,8].…”

Design limits for RC slabs strengthened with hybrid FRP–HPC retrofit system

“…Steel and fiber reinforced polymer (FRP) composite plates have been used to enhance flexural capacity of reinforced concrete (RC) structures by externally attaching these plates to the tension zone of RC structures [4]. FRP composite systems proved to be a viable and economical alternative due to their high strength-to-weight ratio (specific strength), ease of application and for being corrosion resistant [5,6]. While FRP material can resist compressive stresses, there are some potential concerns such as micro-buckling of fibers that needs to be addressed when a composite laminate is exposed to compression [7].…”

Design Optimization of Blast Resistant CFRP-steel Composite Structure Based on Reliability Analysis

“…There are also demands for lighter materials for armor to increase vehicle mobility. Carbon fiber reinforced polymer (CFRP) is considered as efficient substitute for steel due to its various advantages such as lower weight, higher strength and corrosion resistance (Emmons et al 1998, Rizkalla et al 2003.…”