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 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 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 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 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 Identifying and Quantifying Microplastics Generated from the Roadway Environment: Field Monitoring and Analysis https://rip.trb.org/View/2742704 Tue, 04 Aug 2026 09:56:52 GMT https://rip.trb.org/View/2742704 Evaluate PVC Water Main Materials in Roadway Projects https://rip.trb.org/View/2731924 Fri, 17 Jul 2026 14:29:12 GMT https://rip.trb.org/View/2731924 Efficacy, Advancement, and Monitoring of Carbon Fiber Composite Cable (CFCC) https://rip.trb.org/View/2724770 Tue, 07 Jul 2026 10:05:57 GMT https://rip.trb.org/View/2724770 Effect of Using RAP on Gravel Roads https://rip.trb.org/View/2720399 Tue, 30 Jun 2026 15:25:11 GMT https://rip.trb.org/View/2720399 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 3D-Printed Lattice-Based Structures for Next Generation Bridge Bearings and Bridge Isolation Bearings https://rip.trb.org/View/2714398 Mon, 15 Jun 2026 15:23:59 GMT https://rip.trb.org/View/2714398 Development of a Materials Sampling and Testing Safety Guide https://rip.trb.org/View/2709245 Tue, 02 Jun 2026 15:00:57 GMT https://rip.trb.org/View/2709245 High-Strength, Corrosion-Resistant Reinforcement for Empirical Deck Design https://rip.trb.org/View/2689407 Tue, 02 Jun 2026 12:26:14 GMT https://rip.trb.org/View/2689407 The Use of Recycled Plastic in Asphalt Pavements - Phase II https://rip.trb.org/View/2689392 Tue, 02 Jun 2026 12:25:00 GMT https://rip.trb.org/View/2689392