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Evaluation of Full-Depth Precast/ Prestressed Concrete Bridge Deck Replacement with Protective Overlay System

Evaluation of Full-Depth Precast/ Prestressed Concrete Bridge Deck Replacement with Protective Overlay System. Mohsen A. Issa , Ph.D., P.E., S.E., FACI, Department of Civil and Materials Engineering The projects are Supported by IDOT & IDOT/ Modjeski and Masters, Inc.

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Evaluation of Full-Depth Precast/ Prestressed Concrete Bridge Deck Replacement with Protective Overlay System

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  1. Evaluation of Full-Depth Precast/Prestressed Concrete Bridge Deck Replacement with Protective Overlay System Mohsen A. Issa, Ph.D., P.E., S.E., FACI, Department of Civil and Materials Engineering The projects are Supported by IDOT & IDOT/Modjeski and Masters, Inc. • Corrosion of reinforcing steel and the consequent delamination of bridge decks are considerably intensified by the use of deicing chemicals on highways. • Effective rehabilitation methods with minimal construction time and bridge closures and without interference with the traffic flow are needed. • Reliable, economic, and durable overlay construction without fault practices is crucial to protect the underlying bride deck system. • Full-Scale bridge system was fabricated and tested under simulated AASHTO HS20 truck fatigue loading. • The bridge was tested before and after overlay application for the maximum negative and positive moments. • Target performance criteria were adopted to ensure successful and economic overlay construction. • Laboratory Investigations supported with field applications were implemented for the overlay performance evaluation. • The proposed bridge deck system provides an effective, fast, and economic design concept for the rehabilitation and new bridge construction. • Protective LMC and MSC overlays that can last at least 20 years, are successfully developed. • LMC overlay with synthetic fibers will be applied soon on the New Mississippi River Bridge deck.

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