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/ 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 Design Requirements for High Traffic Asphalt Mixes to Ensure Pavement Performance https://rip.trb.org/View/2671978 Wed, 18 Feb 2026 11:11:29 GMT https://rip.trb.org/View/2671978 Develop and Demonstrate an Evaluation Process for Acceptance of Additives for Use in Forensic Analysis in Hot Mix Asphalt https://rip.trb.org/View/2666836 Tue, 10 Feb 2026 14:43:18 GMT https://rip.trb.org/View/2666836 Evaluation of Longitudinal Joint Densities of Asphalt Pavements in Kansas https://rip.trb.org/View/2652473 Tue, 13 Jan 2026 15:50:31 GMT https://rip.trb.org/View/2652473 Phase 4 Study and Evaluation of Materials Response in Hot Mix Asphalt Based on Field Instrumentation https://rip.trb.org/View/2582991 Tue, 05 Aug 2025 16:35:15 GMT https://rip.trb.org/View/2582991 Laboratory Testing & Field Performance of NHDOT Hot Mix Asphalt (HMA) Mixes https://rip.trb.org/View/2582030 Thu, 24 Jul 2025 13:59:29 GMT https://rip.trb.org/View/2582030 Development of Pavement Temperature Measurement System for ICART https://rip.trb.org/View/2559720 Mon, 02 Jun 2025 12:03:28 GMT https://rip.trb.org/View/2559720 Effectiveness of Warm Mix Asphalt Additives as Compaction Aid in Cold Regions Through Application of Wireless Sensors and Performance Tests https://rip.trb.org/View/2534934 Mon, 07 Apr 2025 16:18:04 GMT https://rip.trb.org/View/2534934 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 Scaling Up and Finalizing Ozone Ageing for Hot Mix Asphalt (HMA) https://rip.trb.org/View/2505747 Tue, 04 Feb 2025 10:05:27 GMT https://rip.trb.org/View/2505747 Investigation of Hot Mix Asphalt Aging Effect on Mechanical Properties of Mixes Based on Their Binder Performance Results – Phase II https://rip.trb.org/View/2480360 Wed, 01 Jan 2025 17:04:48 GMT https://rip.trb.org/View/2480360 Field Performance of Pavements Made with High-Modified Hot Mix Asphalt Mixtures https://rip.trb.org/View/2468830 Mon, 02 Dec 2024 19:25:50 GMT https://rip.trb.org/View/2468830 Measuring Field Performance of High-Modified Hot-Mix Asphalt Material over Rubblized Base https://rip.trb.org/View/2442177 Sun, 20 Oct 2024 12:40:49 GMT https://rip.trb.org/View/2442177 Performance Evaluation of HMA Treated with Hydrated Lime and Liquid Antistrip Agents https://rip.trb.org/View/2431176 Mon, 16 Sep 2024 09:35:35 GMT https://rip.trb.org/View/2431176 Durability of Diamond Ground HMA with and w/o Tack Coat https://rip.trb.org/View/2431174 Mon, 16 Sep 2024 09:32:58 GMT https://rip.trb.org/View/2431174