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/ Development of an Innovative, Bio-Mediated, Self-Healing Concrete Technology https://rip.trb.org/View/2717327 Tue, 23 Jun 2026 13:29:43 GMT https://rip.trb.org/View/2717327 Cracks of Low-P Rapid Set Concrete in Deck Repairs: Analysis, Prevention, and Alternatives https://rip.trb.org/View/2714454 Tue, 16 Jun 2026 16:19:59 GMT https://rip.trb.org/View/2714454 Performance Evaluation and Structural Optimization of Fiber-Reinforced Asphalt Concrete (FRAC) for Pothole Repair and Roadway Resilience https://rip.trb.org/View/2696034 Sat, 25 Apr 2026 12:33:24 GMT https://rip.trb.org/View/2696034 State of Practice for Specifying and Repairing Mechanically Stabilized Earth Walls https://rip.trb.org/View/2671985 Wed, 18 Feb 2026 11:23:26 GMT https://rip.trb.org/View/2671985 Vertical and Overhead Concrete Patches https://rip.trb.org/View/2671984 Wed, 18 Feb 2026 11:21:37 GMT https://rip.trb.org/View/2671984 Smart Healing in Additively Manufactured Engineered Cementitious Composites Beams for Durable Transportation Infrastructure https://rip.trb.org/View/2665667 Wed, 04 Feb 2026 15:30:44 GMT https://rip.trb.org/View/2665667 Asphalt 3D Printing for On-Demand Transportation Infrastructure Construction and Repair https://rip.trb.org/View/2646934 Mon, 05 Jan 2026 22:19:44 GMT https://rip.trb.org/View/2646934 Heat Straightening Repair in Connecticut https://rip.trb.org/View/2566904 Wed, 18 Jun 2025 13:59:44 GMT https://rip.trb.org/View/2566904 Replacement of Outside Beams on Adjacent Box-Beam Structures https://rip.trb.org/View/2562257 Fri, 06 Jun 2025 14:24:21 GMT https://rip.trb.org/View/2562257 Development of Innovative Two-Layered System for Upgrade of Steel Culverts (UHPC Shotcrete + Sprayable Self-Healing Concrete) https://rip.trb.org/View/2549030 Sun, 04 May 2025 15:36:54 GMT https://rip.trb.org/View/2549030 Repair and Upgrade of Steel Culverts Using Sprayable Ultra High Performance Concrete (UHPC) https://rip.trb.org/View/2549029 Sun, 04 May 2025 15:23:06 GMT https://rip.trb.org/View/2549029 Durability and Cost-Benefit Assessment of Innovative Materials for Bridge Deck Maintenance and Construction https://rip.trb.org/View/2543852 Mon, 28 Apr 2025 09:09:57 GMT https://rip.trb.org/View/2543852 Beam End Repair for Prestressed Concrete Beams – Phase II https://rip.trb.org/View/2509056 Wed, 12 Feb 2025 18:12:27 GMT https://rip.trb.org/View/2509056 Ultra High-Performance Concrete Repair of Steel Bridge Girder Ends https://rip.trb.org/View/2509053 Wed, 12 Feb 2025 17:53:51 GMT https://rip.trb.org/View/2509053 Delamination of Partial-Depth Panels in Concrete Bridge Decks: Inspection and Repair https://rip.trb.org/View/2445324 Sun, 27 Oct 2024 15:07:58 GMT https://rip.trb.org/View/2445324