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The structural repair and retrofit of concrete structures utilizing externally bonded Fiber Reinforced Polymer (FRP) systems can present some of the most difficult challenges for retrofit design. FRP materials provide cost and durability advantages due to their lighter weight, corrosion resistance, and ease of installation compared with conventional retrofit techniques such as using structural steel and concrete enlargement.
However, the linear elastic behavior and brittle failure mode of FRP can create challenges for design professionals to properly account for these material characteristics on performance of the retrofitted elements. This is due to various design limits that are unique to FRP materials and are not typically considered for standard reinforced concrete design.
This webinar will provide guidance to design professionals on how to retrofit structural column for shear, confinement, and deficient lap-splices to enhance the ductility using externally applied FRP reinforcement. Design examples showing typical steps used in calculations will be presented and discussed during this webinar.
Tarek Alkhrdaji, PhD, PE
Vice President of Engineering with Structural Technologies
Tarek Alkhrdaji, PhD, PE, is Vice President of Engineering with Structural Technologies. Dr. Alkhrdaji has extensive experience in structural repair and retrofit and full-scale load testing of concrete structures. He has been involved in more than 800 projects involving structural repair and strengthening – several of which received awards from The American Concrete Institute (ACI), the Post-Tensioning Institute (PTI), and the International Concrete Repair Institute (ICRI). Dr. Alkhrdaji has written more than 40 papers and articles on strengthening of structures including buildings, bridges, silos and concrete pipes.
Dr. Alkhrdaji is an active member of ACI Committees 216 (Fire Resistance), 437 (Strength Evaluation), and is a voting member of ACI 562 (Concrete Repair Code). He is the past Chair of ACI 440F (FRP Strengthening) and is currently chairing ICRI committee 330 (Strengthening and Stabilization).
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