United States Department of Transportation
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Phase 1 report on the development of predictive model for bridge deck cracking and strength development.
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2009-01-01
[PDF-1.10 MB]
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Alternative Title:Development of predictive model for bridge deck cracking and strength development.
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Abstract:Early-age cracking, typically caused by drying shrinkage (and often coupled with autogenous and thermal
shrinkage), can have several detrimental effects on long-term behavior and durability. Cracking can also provide
ingress of water that can drive chemical reactions, such as alkali-silica reaction (ASR) and sulfate attack. Because of
the problems associated with cracking observed in bridge decks, and the impact of early-age cracking on long-term
performance and durability, it is imperative that bridge decks be constructed with minimal early-age cracking and
that exhibit satisfactory long-term performance and durability. To achieve these goals for bridges in the state of
Texas, a research team has been assembled that possesses significant expertise and background in cement chemistry,
concrete materials and durability, structural performance, computational mechanics (finite difference/element),
bridge deck construction and maintenance, monitoring of in-site behavior of field structures, and the development of
test methods and specifications aimed at practical implementation by state highway departments. This proposal
describes a laboratory- and field-based research program aimed at developing a bridge deck cracking model that will
ultimately be integrated into ConcreteWorks, a suite of software programs developed for TxDOT by this same
research team.
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