Research in Progress (RIP) https://rip.trb.org/ en-us Copyright © 2026. National Academy of Sciences. All rights reserved. http://blogs.law.harvard.edu/tech/rss tris-trb@nas.edu (Bill McLeod) tris-trb@nas.edu (Bill McLeod) Research in Progress (RIP) https://rip.trb.org/Images/PageHeader-wTitle-RIP.jpg https://rip.trb.org/ Evaluation of Asphalt Rubber and Reclaimed Tire Rubber in Chip Seal Applications https://rip.trb.org/View/1521615 Wed, 04 Jul 2018 20:05:14 GMT https://rip.trb.org/View/1521615 Producing Bio-Modified Rubber (BMT) Asphalt; A Sustainable and Bio-Based Alternative for Petroleum-Based Asphalt https://rip.trb.org/View/1442173 Sun, 08 Jan 2017 10:26:20 GMT https://rip.trb.org/View/1442173 PPRC14 SPE 4.50: Performance-Related Specifications for Rubberized Asphalt Binder https://rip.trb.org/View/1441815 Wed, 04 Jan 2017 10:53:19 GMT https://rip.trb.org/View/1441815 Environmental Impacts and Energy Efficiency of Rubberized Warm Mix Asphalt (R-WMA) for Sustainable Road Construction https://rip.trb.org/View/1236251 Thu, 03 Jan 2013 15:43:44 GMT https://rip.trb.org/View/1236251 Performance of Warm Mix Asphalt and Low Energy Mixes, Phase 3 https://rip.trb.org/View/1234322 Thu, 03 Jan 2013 15:10:28 GMT https://rip.trb.org/View/1234322 PPRC 11 SPE: Laboratory and Accelerated Pavement Testing (APT) of Gap-Graded Rubberized Mixes (Hot Mix Asphalt and Warm Mix Asphalt) for the Department of Resources Recycling and Recovery (CalRecycle) https://rip.trb.org/View/1234192 Thu, 03 Jan 2013 15:08:18 GMT https://rip.trb.org/View/1234192