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/ Develop Enhanced Cold Recycling Methods and Specifications https://rip.trb.org/View/2255990 Wed, 27 Sep 2023 15:21:09 GMT https://rip.trb.org/View/2255990 Development of a 4.75mm (No. 4) NAMS Mixture https://rip.trb.org/View/1471560 Wed, 21 Jun 2017 11:59:18 GMT https://rip.trb.org/View/1471560 Development of a Self-healing and Rejuvenating Mechanisms for Asphalt Mixtures Containing Recycled Asphalt Shingles https://rip.trb.org/View/1467123 Sun, 21 May 2017 13:37:57 GMT https://rip.trb.org/View/1467123 Enhancing the Durability and the Service Life of Asphalt Pavements through Innovative Light-Induced Self-Healing Materials https://rip.trb.org/View/1466860 Sun, 21 May 2017 11:19:18 GMT https://rip.trb.org/View/1466860 Development of a Standard Test Method for Characterization of Asphalt Modifiers and Aging-Related Degradation Using an Extensional Rheometer https://rip.trb.org/View/1466859 Sun, 21 May 2017 10:33:53 GMT https://rip.trb.org/View/1466859 Factors that Contribute to Asphalt Absorption: Asphalt Cements https://rip.trb.org/View/1227855 Thu, 03 Jan 2013 13:08:08 GMT https://rip.trb.org/View/1227855 Rubberized Asphalt Cement Evaluation https://rip.trb.org/View/1227852 Thu, 03 Jan 2013 13:08:05 GMT https://rip.trb.org/View/1227852