QuakeWrap’s PileMedic System November 30, 2010 Page 1 PileMedic™ for Repair and Strengthening PileMedic™ for Repair and Strengthening of Columns & Underwater Piles of Columns & Underwater Piles Mo Ehsani, Ph.D., P.E., S.E. Mo Ehsani, Ph.D., P.E., S.E. President, QuakeWrap, Inc., and President, QuakeWrap, Inc., and Professor Emeritus of Civil Engineering, Univ. of Arizona Professor Emeritus of Civil Engineering, Univ. of Arizona November 2010 November 2010 2 How can we fix these piers in a How can we fix these piers in a day while maintaining traffic? day while maintaining traffic? 3 Why Repair/Strengthen? Why Repair/Strengthen? Carry larger loads Correct construction errors/omissions Replace deteriorated materials (steel, concrete, etc. ) Accidental damage (e.g. truck hitting a girder) Comply with new code requirements (e.g. ties for confining R/C columns) Blast Protection History & Background of FRP History & Background of FRP Corvette C1 - 1953 100% FRP Hull 5 FRP Products FRP Products Fiber Reinforced Polymer (FRP) Fiber Reinforced Polymer (FRP) Polymer Resin Matrix Reinforcing Fiber (Glass, Carbon, Kevlar, etc.) Interphase Coupling Agent Why is it called FRP? It is a Polymer (i.e. epoxy, vinyl ester, etc.) that has been reinforced with a Fiber (e.g. carbon, glass, etc.) FRP does not have the same strength in all directions; these types of materials are called anisotropic
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QuakeWrap’s PileMedic System November 30, 2010
Page 1
PileMedic™ for Repair and Strengthening PileMedic™ for Repair and Strengthening of Columns & Underwater Pilesof Columns & Underwater Piles
Mo Ehsani, Ph.D., P.E., S.E.Mo Ehsani, Ph.D., P.E., S.E.President, QuakeWrap, Inc., and President, QuakeWrap, Inc., and
Professor Emeritus of Civil Engineering, Univ. of Arizona Professor Emeritus of Civil Engineering, Univ. of Arizona
November 2010November 2010
2
How can we fix these piers in a How can we fix these piers in a day while maintaining traffic?day while maintaining traffic?
3
Why Repair/Strengthen?Why Repair/Strengthen?
� Carry larger loads� Correct construction errors/omissions� Replace deteriorated materials
(steel, concrete, etc. ) � Accidental damage (e.g. truck hitting a girder)� Comply with new code requirements
(e.g. ties for confining R/C columns)� Blast Protection
History & Background of FRPHistory & Background of FRP