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/ Effectiveness of IDEAL-RT Test in Assessing Rutting Resistance of NC Asphalt Mixtures https://rip.trb.org/View/2726545 Thu, 09 Jul 2026 08:35:20 GMT https://rip.trb.org/View/2726545 SPR 784 Calibration of APA values to Hamburg values for SC Asphalt Mixes https://rip.trb.org/View/2719305 Thu, 25 Jun 2026 09:03:22 GMT https://rip.trb.org/View/2719305 A Novel Method to Optimize N-design for Balanced Performance and Compactability https://rip.trb.org/View/2717326 Tue, 23 Jun 2026 13:22:57 GMT https://rip.trb.org/View/2717326 How Can NMDOT Use TSD Data to Support Pavement Design https://rip.trb.org/View/2704033 Wed, 20 May 2026 11:15:23 GMT https://rip.trb.org/View/2704033 Effects of Target Air Voids on Hot Mix Asphalt (HMA) Performance Tests https://rip.trb.org/View/2698280 Fri, 01 May 2026 09:19:25 GMT https://rip.trb.org/View/2698280 Evaluation of Hamburg Wheel Tracking Test (HWTT) for Rutting Resistance Assessment https://rip.trb.org/View/2671980 Wed, 18 Feb 2026 11:14:14 GMT https://rip.trb.org/View/2671980 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 Develop Heavy Duty Intersection Designs with High Performance Graded (HPG) Binder or Suitable Asphalt Mixtures https://rip.trb.org/View/2614514 Tue, 28 Oct 2025 10:52:22 GMT https://rip.trb.org/View/2614514 2501 Evaluate the Performance and Consistency of BMD Mixes during Production using Rheological and Chemical Binder Testing https://rip.trb.org/View/2606534 Fri, 03 Oct 2025 11:08:00 GMT https://rip.trb.org/View/2606534 Evaluate Thick Lift High Performance Grade (HPG) Mixes for Intersections, Border Checkpoints, and Other Locations with Slow Moving Heavy Traffic https://rip.trb.org/View/2604525 Mon, 29 Sep 2025 16:16:58 GMT https://rip.trb.org/View/2604525 Develop a Balanced Asphalt Mixture Design Procedure https://rip.trb.org/View/2582880 Tue, 05 Aug 2025 10:34:41 GMT https://rip.trb.org/View/2582880 Maine Interstate Rutting Research https://rip.trb.org/View/2554004 Wed, 02 Jul 2025 10:17:24 GMT https://rip.trb.org/View/2554004 Improving Asphalt Mixture Testing Efficiency https://rip.trb.org/View/2563769 Fri, 13 Jun 2025 12:39:11 GMT https://rip.trb.org/View/2563769 Verifying the Indirect Tensile at High Temperature (IDT-HT) Test Performance Criterion: A Multi-scale Investigation Integrating Laboratory, Full-Scale Accelerated Pavement Testing, and Field Evaluations https://rip.trb.org/View/2534018 Thu, 03 Apr 2025 08:06:11 GMT https://rip.trb.org/View/2534018 Performance-Based Design of Permeable Friction Courses Using Warm Mix Asphalt for Enhanced Safety and Durability https://rip.trb.org/View/2480326 Wed, 01 Jan 2025 13:45:25 GMT https://rip.trb.org/View/2480326