0-6723 : development of rapid, cement-based repair materials for transportation structures.
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2014-08-01
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Abstract:The state of Texas has been plagued by various
durability-related issues in recent years,
including deterioration from alkali-silica
reaction, delayed ettringite formation, corrosion
of reinforcing steel, volume changes (plastic
shrinkage, drying shrinkage, thermal effects,
etc.), and spalling of continuously reinforced
concrete pavements. These durability-related
issues, coupled with other factors that contribute
to reductions in service life (e.g., service loads
and defects), have resulted in the need to repair
concrete structures and to do so in a timely,
efficient fashion, with minimal disruption to the
traveling public. Thus, the need for rapid,
cement-based repair materials has emerged,
especially in highly congested urban areas. The
goals of this research project, funded by the
Texas Department of Transportation (TxDOT),
were to evaluate a range of rapid repair
materials and to provide recommendations on
the most efficient, economical, and durable
repair materials and methodologies.
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