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Maintenance

Treatments that slow deterioration and keep a sound pavement in service longer: crack and joint sealing, seals and surface treatments, patching and diamond grinding.

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  • Asphalt pavements

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    • Pavement Preservation

      Pavement preservation is a network-level strategy of low-cost treatments, mainly preventive maintenance, that keep sound pavements in good condition longer.

  • Asphalt pavements

    • Fog Seals

      A fog seal is a light application of a diluted slow-setting asphalt emulsion to the surface of an aged (oxidized) pavement surface. Fog seals are low-cost and are used to restore flexibility to an existing HMA pavement surface.

    • Rejuvenators

      Rejuvenators are products designed to restore original properties to aged (oxidized) asphalt binders by restoring the original ratio of asphaltenes to maltenes.

    • Slurry Seals

      A slurry seal is a homogenous mixture of emulsified asphalt, water, well-graded fine aggregate and mineral filler that has a creamy fluid-like appearance when applied.

    • Bituminous Surface Treatments

      A bituminous surface treatment (BST), also known as a seal coat or chip seal, is a thin protective wearing surface that is applied to a pavement or base course. BSTs can provide all of the following:

    • Non-Structural Overlays

      Non-structural overlays (Figure 1) do not involve extensive structural design and generally contribute little, if anything, to a pavement's structural capacity.

    • HMA Patching

      Patches are a common method of treating an area of localized distress.

      Calculator: Patch quantity

  • Concrete pavements

    • Joint Repair

      In PCC pavements, joints are provided to accommodate concrete volume changes due to temperature and moisture variations.

    • PCC Joint and Crack Sealing

      Sealant products are used to fill joints (Figures 1 and 2) and cracks in order to prevent entry of water or other non-compressible substances.

      Calculator: Crack sealant quantity

    • PCC Patching

      Rigid pavement patches are used to treat localized slab problems such as spalling, scaling (e.g., reactive aggregate distress, over-finishing the surface), joint deterioration, corner breaks or punchouts.

    • Diamond Grinding

      Diamond grinding (Figure 1) refers to a process where gang-mounted diamond saw blades (Figures 2 and 3) are used to shave off a thin, 1.5 - 19 mm (0.06 - 0.75 inch) top layer of an existing PCC surface in order to restore smoothness and…

    • Slab Stabilization

      Slab stabilization seeks to fill voids beneath the slab caused by pumping, consolidation or other means.

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