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/ Use of Nanomaterials to Enhance HPC and UHPC for Ready-Mix and Precast/Prestressed Infrastructure Applications https://rip.trb.org/View/2752277 Thu, 13 Aug 2026 15:32:18 GMT https://rip.trb.org/View/2752277 Thermally Strain Resilient Concrete for Surface Transportation Infrastructure https://rip.trb.org/View/2752280 Thu, 13 Aug 2026 15:32:09 GMT https://rip.trb.org/View/2752280 Evaluating Structural Performance and Durability of Precast Elements Incorporating Nano-Engineered Concrete https://rip.trb.org/View/2752284 Thu, 13 Aug 2026 15:31:53 GMT https://rip.trb.org/View/2752284 Over-height truck impact with prestressed bridge girders https://rip.trb.org/View/2752285 Thu, 13 Aug 2026 15:31:40 GMT https://rip.trb.org/View/2752285 Field Implementations for Concrete with Nontraditional and Natural Pozzolans https://rip.trb.org/View/2752286 Thu, 13 Aug 2026 15:31:30 GMT https://rip.trb.org/View/2752286 Optimization of Dowel Bars in Concrete Pavements https://rip.trb.org/View/2671981 Wed, 12 Aug 2026 14:41:09 GMT https://rip.trb.org/View/2671981 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 Synthesis and Verification of Link Slab Practices for Jointless Bridge Decks in Accelerated Bridge Construction (ABC) https://rip.trb.org/View/2744923 Fri, 07 Aug 2026 08:21:45 GMT https://rip.trb.org/View/2744923 Development and Implementation of Performance Engineered Concrete https://rip.trb.org/View/2742730 Tue, 04 Aug 2026 15:53:16 GMT https://rip.trb.org/View/2742730 Enhanced Understanding of Concrete Pavement Performance https://rip.trb.org/View/2731921 Fri, 17 Jul 2026 13:20:05 GMT https://rip.trb.org/View/2731921 Guidelines and Best Practices for Determining the Life Cycle Cost of Various Superstructure Types https://rip.trb.org/View/2731917 Fri, 17 Jul 2026 10:05:08 GMT https://rip.trb.org/View/2731917 Early Warning for Oregon's Aging Post Tensioned Bridges: Proactive Detection, Longer Life, Lower Risk https://rip.trb.org/View/2725349 Wed, 08 Jul 2026 16:13:14 GMT https://rip.trb.org/View/2725349 Condition Assessment Technology for Bridge Decks with Waterproofing Membranes https://rip.trb.org/View/2717329 Tue, 23 Jun 2026 13:40:38 GMT https://rip.trb.org/View/2717329 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 Alternative Constituent Materials for Use in Low-Carbon Cement Concrete – Part II https://rip.trb.org/View/2716607 Thu, 18 Jun 2026 09:55:41 GMT https://rip.trb.org/View/2716607