Abstract
Eight CRM asphalt concrete mixtures were evaluated using AAMAS characterization procedures: Four wet-process mixtures and four dry-process mixtures. These mixtures were compared to a conventional dense graded mixture. It was determined that CRM has the potential to significantly improve the resistance to fatigue and thermal cracking characteristics of asphalt concrete mixtures. The wet method appears to yield better performance regardless of the rubber particle size. Fine rubber would improve the fatigue and rutting performance of the mixtures irrespective of the process by which it is added. If mixtures and binders are designed properly, CRM has potential to improve the resistance to rutting. When CRM is considered as an alternative, care should be taken to justify the higher costs that are involved.
Rebala, Somasekhar Reddy (1994). Laboratory evaluation of crumb rubber asphalt concrete mixtures using the concepts of SMA mixtures. Master's thesis, Texas A&M University. Available electronically from
https : / /hdl .handle .net /1969 .1 /ETD -TAMU -1994 -THESIS -R289.