Abstract
The mix design procedure specified by Texas Department of Transportation for hot mix asphalt concrete mix consisting of crumb rubber (CRM-HMAC) is cumbersome and requires preparing a large number of laboratory specimens to carry out an appropriate mix design. In addition, TxDOT specifies Static Creep Test and Hamburg Wheel Tracking Device test to evaluate performance of CRM-HMAC. However, different compaction devices are used to prepare specimens for the two tests. Therefore, it is quite possible that the specimens prepared
with two devices may exhibit different performance. Thus purpose of this research project was to identify the problems with and provide solutions to the current procedure and to identify the influence of compaction devices. The evaluation results are presented in this paper.
Rubberized Asphalt and Neat Asphalt Aging Properties 
Life-Cycle Cost Analysis of Flexible Pavement Systems Rehabilitated With the Use of Asphalt Rubber Interlayers 
Effect of Crumb Rubber on the Aging of Asphalt Binders 
Mechanical Behavior of Asphalt Rubber Mixes Prepared in Laboratory 
Development of a Crumb Rubber Modified (CRM) PG binder Specification 
Multi-Layer Pavement Strategies Utilizing Asphalt Rubber Binder 
Influence of processing conditions on rheology of tyre rubber modified bitumens 
Superior Aging Characteristics Of Asphalt Rubber 
Evaluation of Alternative Laboratory Aging Methods of Asphalt Rubber Friction Courses 
Laboratory fatigue performance evaluation of styrene butadiene rubber and crumb rubber modified asphalt mixtures