A bond coat is a spray application of asphalt emulsion. It is applied to an existing asphalt or portland cement concrete surface prior to a new asphalt overlay or patching. This eliminates slippage planes and provides a better bond between new and existing pavement layers.
Research – Development and Evaluation of a Non-Tracking Asphalt Emulsion for Tack Coats and Fog Seals
2017-CTAA-Development and Evaluation of a Non-Tracking Asphalt Emulsion for Tack Coats and Fog Seals