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/ SPR-4943: An Experimental Study into the Fatigue Strength and Ductility of Builtup Steel Members with Holes made using Plasma Cutting Methods https://rip.trb.org/View/2444810 Wed, 23 Oct 2024 14:12:11 GMT https://rip.trb.org/View/2444810 Fatigue Characterization and Improvement of Cantilevered Sign Structure Box Connections https://rip.trb.org/View/2015219 Tue, 30 Aug 2022 15:55:35 GMT https://rip.trb.org/View/2015219 Optimizing the Sustainability of Asphalt Pavements through Incorporating Crumb Rubber in High-Modulus Asphalt Concrete (HMAC) Mixtures in Louisiana https://rip.trb.org/View/1948607 Fri, 06 May 2022 11:52:11 GMT https://rip.trb.org/View/1948607 Improving Freeze-thaw Resistance and Fatigue Resistance of Recycled Aggregate Concrete https://rip.trb.org/View/1902838 Tue, 11 Jan 2022 14:46:01 GMT https://rip.trb.org/View/1902838 Seismic Performance and Fragility of Retrofitted Reinforced Concrete Bridge Columns to Long-Duration Earthquakes https://rip.trb.org/View/1856847 Sat, 05 Jun 2021 17:08:20 GMT https://rip.trb.org/View/1856847 Fatigue Life Analysis of Reinforced Concrete Beams Strengthened with Composites https://rip.trb.org/View/1742607 Fri, 02 Oct 2020 10:41:04 GMT https://rip.trb.org/View/1742607 Investigation of Balanced Mixture Design for New York State Asphalt Mixtures https://rip.trb.org/View/1666459 Fri, 24 Jan 2020 15:32:57 GMT https://rip.trb.org/View/1666459 NAFMP Website Hosting, Operation, and Maintenance https://rip.trb.org/View/1497938 Wed, 17 Jan 2018 13:11:15 GMT https://rip.trb.org/View/1497938