Weiss, W. J., Zavattieri, P., Olek, J., Wilson, C., Esmaeeli, H. S., & Todd, N. (2019). Concrete patching materials and techniques and guidelines for hot weather concreting (Joint Transportation Research Program Publication No. FHWA/IN/JTRP-2019/11). West Lafayette, IN: Purdue University. https://doi.org/10.5703/1288284316921
High early strength (HES) concrete is becoming increasingly used to repair damaged concrete pavement sections. The use of HES concrete enables the repaired pavement to be opened to traffic within hours of placing the concrete. Rapid repair of concrete pavement is an attractive solution since the traveling public is not delayed by the repair of the pavement in addition to a decrease in the amount of exposure to traffic by construction personnel; however, there are challenges due to strict requirements for opening strength and severe penalties for not achieving the target strength. This project examined failure to obtain long term strength in the construction practices of long patches in concrete pavements. The work examined issues associated with temperature on sulfate balance, flexural strength prediction (maturity methods) considering the influence of moisture (effects of self-desiccation), shrinkage mitigation techniques (internal curing), and improving the overall durability of HES concrete patching materials.
high early strength concrete, rapid repair
Joint Transportation Research Program
Indiana Department of Transportation
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