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/ Performance-Based Evaluation of Expanded Polystyrene (EPS) Thickness in Integral Abutment Bridges https://rip.trb.org/View/2784732 Thu, 01 Oct 2026 08:42:00 GMT https://rip.trb.org/View/2784732 Evaluation of Thick Lift Surface Asphalt Pavement Mixtures https://rip.trb.org/View/2721743 Thu, 02 Jul 2026 10:54:08 GMT https://rip.trb.org/View/2721743 A Novel Constrained Layer Damper for Wind-Induced Vibration Mitigation of High-Mast Illumination Poles https://rip.trb.org/View/2505729 Mon, 03 Feb 2025 22:13:46 GMT https://rip.trb.org/View/2505729 Analysis of 2018-2024 Network Level Pavement Structural Testing with the TSD https://rip.trb.org/View/2495008 Sat, 25 Jan 2025 10:49:20 GMT https://rip.trb.org/View/2495008 SPR-4915: 3D GPR Applications for Network Level Testing https://rip.trb.org/View/2444906 Thu, 24 Oct 2024 12:16:58 GMT https://rip.trb.org/View/2444906 Develop Optimum 2-Mat Reinforcement Design in Continuously Reinforced Concrete Pavement (CRCP) https://rip.trb.org/View/2437678 Thu, 03 Oct 2024 09:43:53 GMT https://rip.trb.org/View/2437678 Evaluation of Thick Lift Asphalt Paving https://rip.trb.org/View/2414050 Thu, 08 Aug 2024 09:25:02 GMT https://rip.trb.org/View/2414050 Impact of Asphalt Lift Thickness on Pavement Density and Durability https://rip.trb.org/View/2404007 Tue, 16 Jul 2024 15:23:56 GMT https://rip.trb.org/View/2404007 Weldability of Bridge Steel with Protective Coatings https://rip.trb.org/View/2323446 Wed, 17 Jan 2024 16:26:51 GMT https://rip.trb.org/View/2323446 Measurement of cement content and layer thickness variation of cement stabilized base and subgrade using ground penetrating radar https://rip.trb.org/View/2269988 Tue, 17 Oct 2023 11:55:09 GMT https://rip.trb.org/View/2269988 SPR-4839: Evaluation of Utilizing 3D GPR for Quality Assurance of Bridge Deck Rebar Cover and Delamination Screening https://rip.trb.org/View/2253921 Fri, 22 Sep 2023 14:46:20 GMT https://rip.trb.org/View/2253921 Stainless Steel Coated Rebar for Chloride Resistant Concrete Highways and Bridges https://rip.trb.org/View/1940156 Mon, 11 Apr 2022 17:27:42 GMT https://rip.trb.org/View/1940156 Determining Layer Thickness and Understanding Moisture Related Damage of State-Owned Roads Using GPR and Capturing Such in a GIS-Based Inventory (1.17) https://rip.trb.org/View/1875100 Sat, 28 Aug 2021 18:16:40 GMT https://rip.trb.org/View/1875100 RES2020-14: Design Considerations and Limitations of Rock Dowels/Anchors Loaded in Shear https://rip.trb.org/View/1851967 Tue, 11 May 2021 18:22:21 GMT https://rip.trb.org/View/1851967 Methods for Qualitative and Quantitative Measurement of Top of Rail Friction Modifiers (TORFM) in Revenue Service https://rip.trb.org/View/1762966 Thu, 07 Jan 2021 23:05:28 GMT https://rip.trb.org/View/1762966