In its “A Basic Asphalt Emulsion Manual”, the Asphalt Emulsion Manufacturers Association and the Asphalt Institute describe a fog seal as a “light application of slow-setting emulsion sprayed on an existing asphalt surface.” Properly applied and applied at the right time, a fog seal can be a valuable aid in the maintenance of an asphalt pavement. The question is, what is the proper application and when is the right time to use fog seals in a pavement maintenance program?
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