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Using Ground Tire Rubber in Hot Mix Asphalt Pavements
This report documents the construction and performance of the research study which was initiated to address section 1038(d) of the 1991 Intermodal Surface Transportation Efficiency Act (ISTEA). The project selected to demonstrate the crumb rubber process was located on Platt Canyon (SH 75) from Bowles to C470 in the Denver Metropolitan area. The project was a low volume roadway and quantities of crumb introduced into the mix was minimal. This was to reduce risk in terms of premature failure and Colorado's experience with crumb rubber was limited. Because of this limited experience the 'dry' process was selected because with this process it is easier to control the mixing and less complicated for the contractor. The project contained four different mix designs. A mix containing 1% (20lbs/ton) crumb rubber, a mix containing 1lb/ton, a mix containing 3lb/ton and a mix which contained no rubber were placed on the project. The overall performance of the different evaluation sections was not dramatic and no excessive distress was apparent at the conclusion of the study. However before Colorado would incorporate crumb rubber into their mixes more extensive research would need to be conducted.
Using Ground Tire Rubber in Hot Mix Asphalt Pavements
This report documents the construction and performance of the research study which was initiated to address section 1038(d) of the 1991 Intermodal Surface Transportation Efficiency Act (ISTEA). The project selected to demonstrate the crumb rubber process was located on Platt Canyon (SH 75) from Bowles to C470 in the Denver Metropolitan area. The project was a low volume roadway and quantities of crumb introduced into the mix was minimal. This was to reduce risk in terms of premature failure and Colorado's experience with crumb rubber was limited. Because of this limited experience the 'dry' process was selected because with this process it is easier to control the mixing and less complicated for the contractor. The project contained four different mix designs. A mix containing 1% (20lbs/ton) crumb rubber, a mix containing 1lb/ton, a mix containing 3lb/ton and a mix which contained no rubber were placed on the project. The overall performance of the different evaluation sections was not dramatic and no excessive distress was apparent at the conclusion of the study. However before Colorado would incorporate crumb rubber into their mixes more extensive research would need to be conducted.
Using Ground Tire Rubber in Hot Mix Asphalt Pavements
D. Harmelink (author)
1999
66 pages
Report
No indication
English
Construction Equipment, Materials, & Supplies , Highway Engineering , Solid Wastes Pollution & Control , Elastomer modified asphalts , Road materials , Tires , Flexible pavements , Waste product utilization , Recycling , Hot mix paving mixtures , Bituminous concretes , Colorado , Crumb rubber , Scrap tires , Denver(Colorado)
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