How states use hot-in-place recycling Academic Article uri icon


  • New hot-in-place recycling (HIPR) developments in Europe, Japan, Canada and the US make the method more appealing than before. These developments include new single-pass repaving or remixing processes. After conducting a phone survey of state DOT materials engineers or bituminous engineers, researchers found that 22 of the states interviewed report using HIPR, but only on an experimental basis. Ten additional states use HIPR on a somewhat regular basis. Collectively, these 32 states have used at least one of three HIPR processes: heater scarification, repaving, and remixing. The other results of this HIPR use study including distress correction, structural values, comparative costs, and energy savings are discussed.

published proceedings

  • Better Roads

author list (cited authors)

  • Button, J. W., Estakhri, C. K., & Little, D. N.

complete list of authors

  • Button, JW||Estakhri, CK||Little, DN

publication date

  • July 1995