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A tack or bond coat is an application of emulsion or asphalt binder that is sprayed onto the roadway surface immediately prior to a paving operation. The adhesion of multiple lifts of pavement provides for maximum structural coefficient and ensures the safety and longevity of the pavement structure.
A paving technique whereby the tack or bond coat material is applied through the paving equipment in a continuous operation. Contact your local salesperson for information on availability in your area.
A spray-applied application of asphalt emulsion or binder followed by an application of a single layer of aggregate used to provide friction, seal cracks less than ¼ inches wide and reduce the intrusion of water into roadway structures. Typically used on more rural routes with low-to-moderate ADTs. Life extensions of 5-7 years are typical.
A wearing course of spray-applied polymer modified asphalt emulsion or binder followed by an application of a single layer of aggregate used to provide friction, seal cracks less than ¼ inches wide and preserve roadways. The modification provides resistance to higher ADT routes and provides for a relatively quick return to traffic. Life extensions of 6-7 years are seen.
A preservation technique that involves spraying a diluted asphalt emulsion onto an asphalt surface. Used to enhance aggregate retention and seal hairline cracks. Life extensions of 1-2 years are typical.
An application of emulsion or asphalt binder to a soil base in preparation for the wearing course. Typical use is prior to a chip seal or hot mixed asphalt application; the prime provides protection of the soil against rainfall in staged construction and serves as a bond promoter for the eventual surface. Prime coats are also used as a curing seal for cement-treated bases.
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Ergon Inc.
