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/ 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 Improve Durability and Performance of Concrete 3D Printed Transportation Solutions via Material and Printing Path Design - A Joint Study by OU and TAMU https://rip.trb.org/View/2646951 Tue, 06 Jan 2026 09:08:18 GMT https://rip.trb.org/View/2646951 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 Evaluating the use of recycled and sustainable materials in self-consolidating concrete for underground applications (UTI-UTC 13) https://rip.trb.org/View/2543408 Wed, 07 May 2025 18:48:14 GMT https://rip.trb.org/View/2543408 Study on Mix Design for 3D-Printable Components using Geomaterials and with CSA Cement as Binding Material https://rip.trb.org/View/2509296 Thu, 13 Feb 2025 15:07:22 GMT https://rip.trb.org/View/2509296 3D Printed Smart Permanent Concrete Formwork for Precast Structural Component https://rip.trb.org/View/2491000 Wed, 22 Jan 2025 12:05:34 GMT https://rip.trb.org/View/2491000 Phase-II: Addressing Durability Concerns in Binders with Interlayer Reinforcement for 3D Printed Elements https://rip.trb.org/View/2480350 Wed, 01 Jan 2025 16:01:10 GMT https://rip.trb.org/View/2480350 Automated System to Feed UHPC to 3D Printer https://rip.trb.org/View/2404258 Sun, 21 Jul 2024 14:47:57 GMT https://rip.trb.org/View/2404258 Internal Curing of 3D Printed Engineering Cementitious Composites: Paving the Way for Sustainable and Durable Infrastructure in the Southwest Climates https://rip.trb.org/View/2291297 Thu, 16 Nov 2023 17:47:48 GMT https://rip.trb.org/View/2291297 Durability Assessment of Binders with Interlayer Reinforcement for 3D Printed Elements https://rip.trb.org/View/2291291 Wed, 15 Nov 2023 21:53:07 GMT https://rip.trb.org/View/2291291 Bio-Inspired Solutions for Jersey and Road Noise Barriers: Exploring 3D Printing as Alternative Precast Technology https://rip.trb.org/View/2250458 Mon, 18 Sep 2023 22:12:22 GMT https://rip.trb.org/View/2250458 3D Printed Advanced Materials to Mitigate Prestressed Concrete Girder End Cracks https://rip.trb.org/View/2250454 Mon, 18 Sep 2023 22:06:36 GMT https://rip.trb.org/View/2250454 Innovative Precast Concrete Truss Using Adaptive Shape Memory Prestressing System https://rip.trb.org/View/2250305 Mon, 18 Sep 2023 21:56:33 GMT https://rip.trb.org/View/2250305 Efficacy of 3D Printing for Steel Bridge Fabrication https://rip.trb.org/View/2100876 Wed, 18 Jan 2023 11:17:26 GMT https://rip.trb.org/View/2100876 Planning Project for Initiating A Large-scale 3D Printing Facility https://rip.trb.org/View/2071995 Fri, 16 Dec 2022 12:22:02 GMT https://rip.trb.org/View/2071995