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Partial-depth repair of jointed PCC pavements : cast-in-place and precast procedures.

Filetype[PDF-1.89 MB]


English
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  • Creators:
    Tyson, Samuel S
  • Publication/ Report Number:
    VHTRC 77-R37
  • Resource Type:
    Tech Report
  • Geographical Coverage:
    Virginia
  • OCLC Number:
    3940034
  • Corporate Publisher:
    Virginia Transportation Research Council
  • Abstract:
    The installation of durable patches on jointed portland cement concrete pavement using several types of cast-in-place concrete, is described. The recommended procedures for pavement preparation and patch installation are given, and additional maintenance procedures as cleaning and sealing joints and assuring proper drainage are briefly discussed. The successful evaluation of proprietary products for repair concretes through a laboratory determination of concrete properties, field use of acceptable products, and the assessment of performance data during and after installation is discussed. Included in this study were some of the cements, admixtures, and other special products for repair concretes, from a list maintained by the Materials Division of the Virginia Department of Highways & Transportation to provide assistance in the selection of the proprietary products. A production chart is presented as an aid in estimating the number of patches that can be installed during typical lane closure periods. Concretes with short curing times increased potential production, however, the selection of a repair product is acknowledged to also be dependent on factors such as cost and availability of materials. A procedure for installing precast patches for partial-depth repairs is described however; the rate of pavement preparation is too slow to make this procedure a viable alternative to cast-in-place patching.
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    PDF
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