Evaluation of performance based concrete for bridge decks.
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2015-06-01
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Abstract:The Washington State Department of Transportation (WSDOT) revised the concrete
specification for bridge decks in 2011 to be more performance based with the desired effect of
having less early-age shrinkage cracking. This report evaluates a sample of the bridges
constructed with the revised performance based specification against a sample of bridges
constructed with the traditional WSDOT specification. The evaluation consists of visual
inspections, noting cracks and developing crack intensity diagrams for each bridge. These
diagrams are then used to rank and compare the bridge decks. The outcome of this study is that
the bridge decks constructed with the performance based specification have much less early-age
shrinkage cracking then the traditional WSDOT specification.
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