A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Crumb Rubber Modified Asphalt Concrete in Oregon
Since 1993, the Oregon Department of Transportation (ODOT) has been monitoring performance of seventeen rubber modified asphalt and asphalt sections constructed on Oregon highways. The study originated in response to the Intermodal Surface Transportation Efficiency Act (ISTEA, 1991) which mandated the use of tire rubber in pavements. The ISTEA requirement was eventually repealed, however, the study continued to document pavement performance in an effort to determine if rubber modified asphalt concrete pavements are feasible in terms of construction and life cycle cost. The rubber modified sections that performed the worst included those constructed using the dry process (rubber modified asphalt concrete - RUMAC). The sections performing the best included open graded mixes constructed using the binder PBA-6GR (a rubber modified asphalt). After five years, the PBA-6GR pavements were performing as well or better than the control sections. The cost of the mixes constructed in 1993 and 1994 with PBA-6GR was about 12% more than the control sections. Over the life of the pavement, the terminal blend asphalt rubber (PBA-6GR) may be cost effective. This report documents the performance of the rubber modified and control sections including distress information, skid and ride data and laboratory testing results. In addition, non-ODOT projects were reviewed and discussed.
Crumb Rubber Modified Asphalt Concrete in Oregon
Since 1993, the Oregon Department of Transportation (ODOT) has been monitoring performance of seventeen rubber modified asphalt and asphalt sections constructed on Oregon highways. The study originated in response to the Intermodal Surface Transportation Efficiency Act (ISTEA, 1991) which mandated the use of tire rubber in pavements. The ISTEA requirement was eventually repealed, however, the study continued to document pavement performance in an effort to determine if rubber modified asphalt concrete pavements are feasible in terms of construction and life cycle cost. The rubber modified sections that performed the worst included those constructed using the dry process (rubber modified asphalt concrete - RUMAC). The sections performing the best included open graded mixes constructed using the binder PBA-6GR (a rubber modified asphalt). After five years, the PBA-6GR pavements were performing as well or better than the control sections. The cost of the mixes constructed in 1993 and 1994 with PBA-6GR was about 12% more than the control sections. Over the life of the pavement, the terminal blend asphalt rubber (PBA-6GR) may be cost effective. This report documents the performance of the rubber modified and control sections including distress information, skid and ride data and laboratory testing results. In addition, non-ODOT projects were reviewed and discussed.
Crumb Rubber Modified Asphalt Concrete in Oregon
E. A. Hunt (author)
2002
44 pages
Report
No indication
English
Construction Equipment, Materials, & Supplies , Highway Engineering , Hot mix paving mixtures , Bituminous concrete pavements , Elastomer modified asphalt , Road materials , Pavement conditions , Highway construction , Rubber , Waste utilization , Aggregates , Binders , Admixtures , Oregon , Crumb rubber modified asphalt concrete , Tire-rubber
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