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/ Effect of Supplementary Cementitious Materials (SCMs) and waste products on Critical Chloride Threshold, CT, of Concrete https://rip.trb.org/View/2694441 Tue, 21 Apr 2026 13:35:39 GMT https://rip.trb.org/View/2694441 State of Practice of Pozzolanic Concrete in Infrastructure Projects https://rip.trb.org/View/2600544 Thu, 18 Sep 2025 16:08:41 GMT https://rip.trb.org/View/2600544 Determining NM Harvested Fly Ash Quality for Deployment in Durable Concrete Mix https://rip.trb.org/View/2582990 Tue, 05 Aug 2025 16:28:00 GMT https://rip.trb.org/View/2582990 Aggregate Alkali-Silica-Reactivity and Mitigative Measures https://rip.trb.org/View/2582928 Tue, 05 Aug 2025 13:32:55 GMT https://rip.trb.org/View/2582928 Development of an Advanced Snow-Melting Geopolymer Concrete Utilizing Graphene Nanoplatelets and Landfilled Fly Ash https://rip.trb.org/View/2410494 Wed, 31 Jul 2024 16:27:31 GMT https://rip.trb.org/View/2410494 Nanotechnology-enabled sustainable and cement-free pervious concrete pavement https://rip.trb.org/View/2263532 Fri, 06 Oct 2023 18:54:07 GMT https://rip.trb.org/View/2263532 Addressing Fly Ash Shortage with Limestone Calcined Clay Cement https://rip.trb.org/View/2196874 Thu, 15 Jun 2023 09:58:01 GMT https://rip.trb.org/View/2196874 Showcasing and Rodeo of Emerging Concrete Technologies at TFHRC https://rip.trb.org/View/2077946 Tue, 06 Dec 2022 09:48:39 GMT https://rip.trb.org/View/2077946 Evaluation of Nano-Materials in Concrete for Improved Durability https://rip.trb.org/View/2055965 Thu, 03 Nov 2022 14:43:12 GMT https://rip.trb.org/View/2055965 Alkali-Silica Reaction Mitigation using Alternative Supplementary Cementitious Materials https://rip.trb.org/View/1948643 Fri, 06 May 2022 12:19:52 GMT https://rip.trb.org/View/1948643 Calcined Clays as Alternative Supplementary Cementitious Material and Precursor for Geopolymer Binders in Transportation Infrastructure https://rip.trb.org/View/1948612 Fri, 06 May 2022 11:36:45 GMT https://rip.trb.org/View/1948612 Beneficiation of High Sulfur Fly Ashes and Quarry Fines for Sustainable Ternary Concrete Mixtures https://rip.trb.org/View/1925911 Fri, 11 Mar 2022 09:19:39 GMT https://rip.trb.org/View/1925911 Alternative Supplementary Cementitious Materials in Ultra-High Performance Concrete https://rip.trb.org/View/1904906 Thu, 20 Jan 2022 14:59:11 GMT https://rip.trb.org/View/1904906 Low-Cost Sustainable Engineered Geopolymer Composites (EGCs) for Repair and New Construction of Transportation https://rip.trb.org/View/1904905 Thu, 20 Jan 2022 14:56:02 GMT https://rip.trb.org/View/1904905 Sources and Substitutes for Fly Ash in ADOT Concrete Mixes https://rip.trb.org/View/1899649 Wed, 22 Dec 2021 19:24:50 GMT https://rip.trb.org/View/1899649