Title: MITIGATION OF INSTABILITY ASPHALT PAVEMENT RUTTING
Abstract: Ten sites in the town of lethbridge, Alberta that exhibited modest to severe pavement rutting were identified for examination. Core samples were obtained and panels across the traffic lane removed. At all locations, rutting had developed primarily within the asphaltic concrete layer itself, not in the base course or subgrade. Laboratory tests on the samples examined in situ density, asphalt content, Marshall characteristics, penetration and viscosity tests. The feasibility of using a harder asphalt cement was examined and alternative mix designs were assessed by Marshall stability, hveem stabilometer, repeated load triaxial and creep test methods. On the basis of the lab program, improved concrete mixes were identified that would extend the life of pavements with respect to instability rutting. For the covering abstract of the conference see IRRD 807201.
Publication Year: 1988
Publication Date: 1988-01-01
Language: en
Type: article
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