Road American
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Sand bitumen emulsion mixes are produced by combining properly graded sand with a slow or medium setting emulsion in a pugmill or mixer, sometimes with filler like cement or lime to control breaking and early strength. In cold mix, the goal is workable coating without premature breaking. For surface dressing or patching, application requires clean surfaces, controlled moisture, and adequate curing time before traffic. Mix design focuses on emulsion content, gradation, breaking behavior, and final void structure to avoid flushing or raveling.
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