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Evaluation of curing compound application time on concrete surface durability : [brief].
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  • Abstract:
    Roadways that are both durable and aesthetically pleasing are primary goals of Wisconsin

    Department of Transportation (WisDOT) paving projects. Recently, Portland Cement Concrete

    (PCC) pavement projects constructed by WisDOT have experienced increased amounts of

    scaling within the first two years of service life. Scaling is a form of surface damage that can lead to

    decreases in the aesthetic appeal, functionality and service life of a PCC pavement. Scaled pavements

    typically demonstrate symptoms including surface roughness, exposed aggregates, collection of

    loose scaled material on the surface and discontinuities in both the outward appearance and level of

    the top layer of the pavement. Membrane-forming curing compounds (MFCCs) are used in paving

    applications to properly ensure that the mix water within the mortar that comprises the top ¼ to ½

    inch of the concrete pavement surface does not prematurely evaporate and inhibit hydration. However,

    pavement projects using any one of several different WisDOT-approved curing compounds still

    experienced scaling within a few years of construction.

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