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 Capacity and Acceptance Criteria of Welded Splices on Cold-Bent Reinforcing Steel https://rip.trb.org/View/2323252 Wed, 17 Jan 2024 16:12:52 GMT https://rip.trb.org/View/2323252 Advanced Concrete Materials for Rapid Infrastructure Repair and Rehabilitation https://rip.trb.org/View/2291295 Thu, 16 Nov 2023 17:23:51 GMT https://rip.trb.org/View/2291295 Impact of Bolt Holes on the Performance of Steel Girders https://rip.trb.org/View/2289610 Mon, 13 Nov 2023 18:03:58 GMT https://rip.trb.org/View/2289610 SPR-4841: Investigation into the Fatigue Strength and Ductility of Steel Plates with Holes made from Plasma Cutting Methods https://rip.trb.org/View/2238797 Thu, 31 Aug 2023 16:39:30 GMT https://rip.trb.org/View/2238797 Criteria of Welded Splices on Cold-Bent Reinforcing Steel https://rip.trb.org/View/2151375 Wed, 12 Apr 2023 19:13:01 GMT https://rip.trb.org/View/2151375 Characterization of Regular Concrete and Low-Cost Engineered Cementitious Composites with Incorporation of Cellulose Nanoparticles and Cost- Effective Ingredients https://rip.trb.org/View/1948613 Fri, 06 May 2022 11:34:14 GMT https://rip.trb.org/View/1948613 Development of Ultra-High Performance Engineered Geopolymer Composites (UHP-EGCs) https://rip.trb.org/View/1904904 Thu, 20 Jan 2022 14:22:12 GMT https://rip.trb.org/View/1904904 Implementation of Balanced Mix Design Methods in Oregon to Meet Long-term Performance Goals https://rip.trb.org/View/1897043 Mon, 13 Dec 2021 13:12:45 GMT https://rip.trb.org/View/1897043 A Direct Design Method of Hybrid High Strength Steel Web Tapered Members https://rip.trb.org/View/1890628 Mon, 08 Nov 2021 15:05:34 GMT https://rip.trb.org/View/1890628 Resilient 3D-Printed Infrastructure with Engineered Cementitious Composites (ECC) https://rip.trb.org/View/1751182 Wed, 11 Nov 2020 09:44:47 GMT https://rip.trb.org/View/1751182 Development of Novel Ultra-High Performance Engineered Cementitious Composites (UHP-ECC) for Durable and Resilient Transportation Infrastructure https://rip.trb.org/View/1751126 Tue, 10 Nov 2020 15:24:11 GMT https://rip.trb.org/View/1751126 New Sesimic-Resisting Connections or Concrete-Filled Tube Components In High-Speed Rail Systems https://rip.trb.org/View/1547447 Sat, 22 Sep 2018 20:22:43 GMT https://rip.trb.org/View/1547447 SPR-4326: Self-healing Cementitious Composites (SHCC) with Ultrahigh Ductility for Pavement and Bridge Construction https://rip.trb.org/View/1530318 Mon, 06 Aug 2018 10:55:48 GMT https://rip.trb.org/View/1530318 Toward Corrosion-Free and Highly Sustainable Structural Members by Using Emerging Ultra-High-Performance Materials for Transportation Infrastructure https://rip.trb.org/View/1505461 Thu, 22 Mar 2018 14:46:57 GMT https://rip.trb.org/View/1505461