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WESTERN REGIONAL
SUPERPAVE CENTER
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Evaluation of Crumb Rubber Modified Paving Mixtures in Nevada This research project was sponsored by the Nevada DOT and was completed in 1996. The objective of the research was to evaluate the effectiveness of using crumb rubber modified (CRM) binders and mixtures on Nevada’s roads. In the binder area, the research evaluated the various methods for testing CRM binders using the Superpave technology and recommended a system which combined the cup and plate technology with the BBR to grade CRM binders. In the mixtures area, the research recommended a modified Hveem mix design method to design CRM mixtures. Field projects were constructed and their performance were monitored and documented. Available Information: Download: Characterization of CRM Binders & Mixtures Used in Nevada
FHWA Pooled Fund Study on CRM Binders and Mixtures The University of Nevada researchers were part of the team led by Oregon State University which conducted the FHWA Pooled Fund Study on CRM Technology. The UNR team evaluated the performance of CRM binders as compared to sand filler and the impact of rubber modification on the low temperature properties of binders. Various sizes of crumb rubber were used at various contents and their impact were evaluated using the Superpave technology. Available Information: Download Papers: "Impact of Crumb Rubber and Sand on Rheological Properties of Binders." |
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