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/ Innovative Materials for Improved Roadway Mobility and Drainage Efficiency https://rip.trb.org/View/2677558 Wed, 04 Mar 2026 13:53:43 GMT https://rip.trb.org/View/2677558 Interfacial Shear Transfer for Concrete Elements with Non-Corrosive Composite Reinforcement https://rip.trb.org/View/2646936 Mon, 05 Jan 2026 22:26:37 GMT https://rip.trb.org/View/2646936 Development Of Ultra High performance Concrete With Low-Density Flexible Fibers For Bridge Applications https://rip.trb.org/View/2633323 Tue, 02 Dec 2025 15:26:19 GMT https://rip.trb.org/View/2633323 Patch Mixtures for Bridge Structures and Pavements https://rip.trb.org/View/2587115 Sat, 09 Aug 2025 09:09:25 GMT https://rip.trb.org/View/2587115 Design Guidance Development for Continuous Prestressed CFCC Strand Beams https://rip.trb.org/View/2562256 Fri, 06 Jun 2025 14:21:49 GMT https://rip.trb.org/View/2562256 Development and Characterization of UHPC Including Carbon Fibers and Internal Curing for Bridge Deck Overlays https://rip.trb.org/View/2509298 Thu, 13 Feb 2025 15:05:12 GMT https://rip.trb.org/View/2509298 A High-Performance, Sustainable, Ultra-High-Performance Concrete Material for Highway Bridge Applications https://rip.trb.org/View/2498992 Tue, 28 Jan 2025 13:02:40 GMT https://rip.trb.org/View/2498992 Precast concrete with self-powering defrosting capability https://rip.trb.org/View/2491005 116,800 people are injured in vehicle crashes on snowy or icy pavement annually. Snow and ice increase road maintenance costs. Winter road maintenance accounts for ~20% of State DOT maintenance budgets. State and local agencies spend more than $2.3 billion on snow and ice control operations annually. Each year, these road agencies also spend millions of dollars to repair infrastructure damage caused by snow and ice. This exploratory project is aimed at developing precast concrete with self-powering defrosting capability. Defrosting capability has long been shown to be effective in cement-based materials by resistance (Joule) heating, provided that conductive admixtures are used to reduce the resistivity. Short carbon fiber is the most cost-effective conductive admixture to greatly lower the resistivity, so that resistance heating becomes effective. Short steel microfiber is even more effective than short carbon fiber, but it is much higher in price. ]]> Wed, 22 Jan 2025 11:56:11 GMT https://rip.trb.org/View/2491005 Performance Based Specifications of Fiber Reinforced Concrete https://rip.trb.org/View/2491105 Thu, 16 Jan 2025 15:24:58 GMT https://rip.trb.org/View/2491105 Durability Assessment of Self-Sensible Ultra High-Performance Concrete (S2UHPC) for Infrastructure Rehabilitation Under Extreme Weather Conditions https://rip.trb.org/View/2475699 Fri, 20 Dec 2024 19:52:22 GMT https://rip.trb.org/View/2475699 Strengthening and corrosion protection of coastal transportation infrastructure with titanium alloy bars https://rip.trb.org/View/2437858 Mon, 07 Oct 2024 15:52:57 GMT https://rip.trb.org/View/2437858 Cracking-resistant Concrete for Durable Coastal Structures https://rip.trb.org/View/2422881 Thu, 29 Aug 2024 14:12:13 GMT https://rip.trb.org/View/2422881 Strengthening Piers to Resist Vehicular Collision https://rip.trb.org/View/2317394 Mon, 03 Jun 2024 15:02:47 GMT https://rip.trb.org/View/2317394 Determining the Effect of Changing Relative Area on the Galvanic Corrosion Rate of Contacting Dissimilar Metals/Materials https://rip.trb.org/View/2335372 Mon, 03 Jun 2024 14:58:31 GMT https://rip.trb.org/View/2335372 Design and Detailing of Anchorages for Externally Bonded CFRP - Phase 2 https://rip.trb.org/View/2353877 Mon, 03 Jun 2024 14:48:10 GMT https://rip.trb.org/View/2353877