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/ In-Situ Monitoring of Concrete Early Age Strength Development Through Acoustic Resonance Technologies https://rip.trb.org/View/2689759 Wed, 08 Apr 2026 09:37:19 GMT https://rip.trb.org/View/2689759 Statistical Evaluation of Illinois Modified AASHTO T161 Freeze–Thaw Testing Following Laboratory Relocation https://rip.trb.org/View/2686616 Wed, 01 Apr 2026 09:41:33 GMT https://rip.trb.org/View/2686616 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 Evaluating the Impact of Volumetric Properties and Reheating on the Balanced Mix Design Test Results - Phase II https://rip.trb.org/View/2639368 Wed, 10 Dec 2025 14:16:56 GMT https://rip.trb.org/View/2639368 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 Gravel Road Performance Enhancements – Phase II https://rip.trb.org/View/2507250 Mon, 10 Feb 2025 14:11:01 GMT https://rip.trb.org/View/2507250 Incorporating Lab Skid Measurements into the Balanced Mix Design Process https://rip.trb.org/View/2447007 Wed, 30 Oct 2024 15:02:11 GMT https://rip.trb.org/View/2447007 Establishing Polishing Values of Aggregates for Use in Surface Asphalt Mixtures – Laboratory Evaluation https://rip.trb.org/View/2387402 Thu, 06 Jun 2024 08:48:20 GMT https://rip.trb.org/View/2387402 Innovative Pothole Repair Materials and Techniques – Phase II https://rip.trb.org/View/2298709 Wed, 29 Nov 2023 11:39:48 GMT https://rip.trb.org/View/2298709 Automated IDEAL Cracking and Rutting Tests https://rip.trb.org/View/2256327 Wed, 27 Sep 2023 16:47:18 GMT https://rip.trb.org/View/2256327 Field Validation of Laboratory Cracking Tests of Asphalt Mixtures https://rip.trb.org/View/2112775 Mon, 06 Feb 2023 16:03:19 GMT https://rip.trb.org/View/2112775 Correlation between soil erosion resistance and lab/in-situ testing https://rip.trb.org/View/2067983 Mon, 21 Nov 2022 16:26:23 GMT https://rip.trb.org/View/2067983 Laboratory Characterization of Fiber-Reinforced Polymer Reinforcement Material Properties and Surface Treatment Behavior in Concrete https://rip.trb.org/View/2058577 Tue, 08 Nov 2022 10:05:18 GMT https://rip.trb.org/View/2058577 SPR-4623: Improved Light Weight Deflectometer Test (LWD) and Analysis https://rip.trb.org/View/1898768 Mon, 20 Dec 2021 15:14:45 GMT https://rip.trb.org/View/1898768 SPR-4616: GIS based Geotechnical Database for Collaborative GIS https://rip.trb.org/View/1888334 Tue, 26 Oct 2021 10:08:37 GMT https://rip.trb.org/View/1888334