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/ Reclamation and Recycling Techniques to achieve Perpetual Pavements Characteristics https://rip.trb.org/View/2703795 Fri, 15 May 2026 17:15:16 GMT https://rip.trb.org/View/2703795 Assessing the Durability and Long-Term Performance of Rejuvenated Asphalt Mixes with RAP https://rip.trb.org/View/2646944 Mon, 05 Jan 2026 23:09:53 GMT https://rip.trb.org/View/2646944 Development of Performance Measures for Pothole-Patching Cold Asphalt Mix Materials for Safe and Sustainable Transportation https://rip.trb.org/View/2627349 Wed, 19 Nov 2025 14:17:20 GMT https://rip.trb.org/View/2627349 Increasing Asphalt Recycling to Reduce Paving Costs, Improve Pavement Longevity, and Reduce Environmental Impact https://rip.trb.org/View/2593927 Thu, 28 Aug 2025 11:05:37 GMT https://rip.trb.org/View/2593927 Determine the Optimum Dosage of Rejuvenators Based on the RAP Contents as well as the PG Grade of Recovered RAP Binder https://rip.trb.org/View/2582992 Tue, 05 Aug 2025 16:45:21 GMT https://rip.trb.org/View/2582992 Cracking Resistance of Alaskan Asphalt with RAP Material https://rip.trb.org/View/2512614 Fri, 21 Feb 2025 20:44:37 GMT https://rip.trb.org/View/2512614 Evaluation of RePLAY for Mainline, Shoulders, and Rumbles, Phase II Study: Proprietary Bio-based Fog Sealer and Rejuvenator Reapplication in Clinton County https://rip.trb.org/View/2508963 Wed, 12 Feb 2025 12:00:15 GMT https://rip.trb.org/View/2508963 Improved Pavement Durability and Resiliency Using Balanced Mix Design with High RAP and Rejuvenator: A Path Toward Statewide Implementation https://rip.trb.org/View/2480354 Wed, 01 Jan 2025 16:15:15 GMT https://rip.trb.org/View/2480354 Development of Quality Standards for Inclusion of High Recycled Asphalt Pavement Content in Asphalt Mixtures - Phase V https://rip.trb.org/View/2342172 Tue, 20 Feb 2024 18:02:28 GMT https://rip.trb.org/View/2342172 A Screening Tool for Assessment of Moisture-Induced Damage of Asphalt Mixes Containing RAP Based on Molecular Dynamics Simulation https://rip.trb.org/View/2291283 Wed, 15 Nov 2023 17:19:44 GMT https://rip.trb.org/View/2291283 Prediction of Moisture Resistance of Polymeric Asphalt Binders Through the Atomic Force Microscopy (AFM) Technique https://rip.trb.org/View/1948642 Fri, 06 May 2022 12:23:32 GMT https://rip.trb.org/View/1948642 Analysis of Long-Term Field Performance of Spray-On Rejuvenators https://rip.trb.org/View/1891280 Wed, 10 Nov 2021 15:25:51 GMT https://rip.trb.org/View/1891280 Evaluation of Proprietary Rejuvenators https://rip.trb.org/View/1764618 Thu, 21 Jan 2021 16:30:52 GMT https://rip.trb.org/View/1764618