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/ Integrating Concrete 3D-Printing and UHPC Spray Techniques for Improved Structural Performance https://rip.trb.org/View/2745082 Fri, 07 Aug 2026 08:26:00 GMT https://rip.trb.org/View/2745082 Guidelines for Post-Wildfire Inspections of Unstable Slopes, Slope Reinforcement, and Slope Protection Systems https://rip.trb.org/View/2558420 Mon, 26 May 2025 22:22:34 GMT https://rip.trb.org/View/2558420 Performance Testing of GRS Test Piers Constructed with Florida Aggregates - Axial Load Deformation Relationships https://rip.trb.org/View/2199641 Wed, 21 Jun 2023 11:47:01 GMT https://rip.trb.org/View/2199641 Strengthening of Pre-Tensioned Concrete Beams https://rip.trb.org/View/1702418 Fri, 24 Apr 2020 13:43:34 GMT https://rip.trb.org/View/1702418 Performance Testing of GRS Test Piers Constructed with Florida Aggregates - Axial Load Deformation Relationships https://rip.trb.org/View/1690002 Fri, 28 Feb 2020 13:12:23 GMT https://rip.trb.org/View/1690002 Thermoplastic Composites by 3D Printing and Automated Manufacturing to Extend the Life of Transportation Facilities (2.4) https://rip.trb.org/View/1590583 Tue, 05 Mar 2019 09:58:36 GMT https://rip.trb.org/View/1590583