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/ 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 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 Long-Term Performance of Low Permeable Concrete for Structures https://rip.trb.org/View/2270038 Tue, 17 Oct 2023 19:21:04 GMT https://rip.trb.org/View/2270038 Laboratory Evaluation of Fresh and Hardened Concrete Comprising Type IP Portland-Pozzolan Cement https://rip.trb.org/View/2263680 Fri, 06 Oct 2023 16:55:08 GMT https://rip.trb.org/View/2263680 Investigating the Performance of Concrete Incorporating Utah-recycled Glass Pozzolan https://rip.trb.org/View/2262782 Fri, 06 Oct 2023 12:20:39 GMT https://rip.trb.org/View/2262782 Alkali-Silica Reaction Mitigation Strategies for ITD Concrete Mixes https://rip.trb.org/View/2083794 Wed, 14 Dec 2022 17:01:07 GMT https://rip.trb.org/View/2083794 Duracem Evaluation for Kansas Paving Applications https://rip.trb.org/View/2026344 Thu, 22 Sep 2022 11:36:52 GMT https://rip.trb.org/View/2026344 Development of a Test to Measure Concrete Permeability Admixture Effectiveness https://rip.trb.org/View/1977952 Wed, 08 Jun 2022 15:49:32 GMT https://rip.trb.org/View/1977952 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 Durability of Concrete Produced with an Alternative Supplementary Cementitious Material https://rip.trb.org/View/1751181 Wed, 11 Nov 2020 09:42:24 GMT https://rip.trb.org/View/1751181 Evaluation of Alternative Sources of Supplementary Cementitious Materials (SCMs) for Concrete Materials in Transportation Infrastructure https://rip.trb.org/View/1751123 Tue, 10 Nov 2020 15:21:05 GMT https://rip.trb.org/View/1751123 Recommendations for Revision of AASHTO M 295 Standard Specification to Include Marginal and Unconventional Source Coal Fly Ashes https://rip.trb.org/View/1516166 Tue, 19 Jun 2018 09:30:43 GMT https://rip.trb.org/View/1516166 Use of Bagasse Ash as a Concrete Additive for Road Pavement Applications https://rip.trb.org/View/1505361 Thu, 22 Mar 2018 22:06:46 GMT https://rip.trb.org/View/1505361 Use of Nevada’s Natural Pozzolan to Mitigate Alkali-silicate Reactivity https://rip.trb.org/View/1464479 Thu, 13 Apr 2017 16:27:48 GMT https://rip.trb.org/View/1464479 Utilizing Coal Fly Ash and Recycled Glass in Developing Green Concrete Materials https://rip.trb.org/View/1236316 Thu, 03 Jan 2013 15:44:54 GMT https://rip.trb.org/View/1236316