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Publication Number: FHWA-HRT-11-059
Date: August 2011

 

Multiple Corrosion-Protection Systems for Reinforced Concrete Bridge Components

508 Captions

Figure 1. Graph. Time to first repair. Conventional reinforcement without a corrosion inhibitor shows the shortest time to first repair, 19 years. The addition of a corrosion inhibitor increases the time to first repair for conventional reinforcement, with conventional reinforcement with Hycrete having the longest time to first repair, 38 years. Systems with conventional epoxy-coated reinforcement (ECR), ECR with improved adhesion, and ECR in conjunction with Rheocrete® all have a time to first repair of 55 years. The use of multiple-coated reinforcement or a corrosion inhibitor other than Rheocrete® increases the time to first repair to between 56 and 64 years.

Figure 2. Graph. Present cost for initial construction and repair over 75 years. Conventional reinforcement without a corrosion inhibitor shows the greatest cost over a 75-year design life, approximately $65 per ft2 ($700 per m2). The addition of a corrosion inhibitor reduces the overall cost for conventional reinforcement, with conventional reinforcement with Hycrete being the most cost effective at $46 per ft2 ($502 per m2). Coated bar systems have overall costs between $30 per ft2 ($327 per m2) and $35 per ft2 ($374 per m2).

 

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