Caltrans Changes SECTION 39 “Hot Mix Asphalt”. Presented by: Terrie Bressette Caltrans. What Changed? TERMS. Hot Mix Asphalt (HMA) = Asphalt Concrete (AC) Rubberized HMA (RHMA) = Rubberized AC (RAC) Open Graded Friction Course (OGFC) = OGAC RHMA-G = RAC (Type G)
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(Mix Design & Verification)
mix vs. production
e.g. ¾-inch mix = 0.20-ft layer and above
½-inch mix = 0.125-ft layer