Sealing

Left to the harsh elements, asphalt pavement will deteriorate rapidly. The asphalt binder that holds the pavement together begins to oxidize and weather soon after installation. Moisture penetrates the asphalt causing further damage and deterioration to the pavement. Sealcoating is one of the most important elements of a Strategic Management Plan. Pavement sealing is used to protect off-highway pavement surfaces against gasoline, oil, salt, water, and ultraviolet rays. In order for sealcoating to be done properly Silica sand is added to the mix at a ratio of approximately 2-6 lbs of sand per gallon of sealer. This sand, when added, fills in the voids in the pavement and adds an element of strength. The sand additive in the mix will fill and voids in the asphalt more effectively. For maximum effectiveness, sealcoating should be done within the first 12 months after the new asphalt is installed and then every 2 to 4 after that.

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