Preheating of existing pavement
Preheating of existing pavement
(OP)
Is it common to preheat the existing asphalt before an overlaying job? I’m not a paving expert, but I have been involved in a lot a paving jobs before. It made sense when I saw this the other day for the first time – preheat the existing to create a better bond with the new asphalt – it’s only that I have never seen it before. Any comments?





RE: Preheating of existing pavement
RE: Preheating of existing pavement
Heating the asphalt oxidizes the pavement, which makes it more brittle. If you aren't scarifying or hot-in-place recycling, you are better off with a properly applied tack coat, as Ron said.
"...students of traffic are beginning to realize the false economy of mechanically controlled traffic, and hand work by trained officers will again prevail." - Wm. Phelps Eno, ca. 1928
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