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/ Evaluation & Mitigation Methods for the Prevention of Cement Concrete Deterioration due to Pyrrhotite: Part 2 https://rip.trb.org/View/2714457 Tue, 16 Jun 2026 16:43:05 GMT https://rip.trb.org/View/2714457 Investigation of Reflective Cracking in Wisconsin https://rip.trb.org/View/2671979 Wed, 18 Feb 2026 11:13:16 GMT https://rip.trb.org/View/2671979 2503 Enhancing MALP and MKP as Repair Materials Through Joint Usage and in combination with Ceramic Paint https://rip.trb.org/View/2606541 Fri, 03 Oct 2025 12:05:58 GMT https://rip.trb.org/View/2606541 Quantifying Portland-Limestone Cement Chemical and Physical Characteristics Affecting Concrete Quality https://rip.trb.org/View/2582993 Tue, 05 Aug 2025 16:54:02 GMT https://rip.trb.org/View/2582993 SPR-5024: Evaluation and Optimization of Portland Limestone Cement Concretes: Materials, Mixtures, and Performance https://rip.trb.org/View/2553992 Thu, 15 May 2025 15:57:51 GMT https://rip.trb.org/View/2553992 Alternative Pavement Rehabilitation Strategy Using a Geogrid Interlayer https://rip.trb.org/View/2507238 Mon, 10 Feb 2025 11:11:43 GMT https://rip.trb.org/View/2507238 Effect of Carbon-Negative Carbon Black on Concrete Properties https://rip.trb.org/View/2389221 Tue, 11 Jun 2024 07:28:54 GMT https://rip.trb.org/View/2389221 Development of Longitudinal Cracking Models for Concrete Pavements https://rip.trb.org/View/2381706 Mon, 20 May 2024 20:06:51 GMT https://rip.trb.org/View/2381706 Optimizing Cementitious Systems for Alternative Cement using Thermodynamic Modeling https://rip.trb.org/View/2344524 Fri, 23 Feb 2024 16:22:27 GMT https://rip.trb.org/View/2344524 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 Recycling Portland Cement Concrete Pavements using Rubblization and Fractured Slab Techniques https://rip.trb.org/View/2262773 Fri, 06 Oct 2023 11:01:54 GMT https://rip.trb.org/View/2262773 Bio-waste Materials as Supplementary Cementitious Materials for Coastal Concrete Applications https://rip.trb.org/View/2259932 Tue, 03 Oct 2023 15:07:40 GMT https://rip.trb.org/View/2259932 2317 Effectiveness of Magnesuim-Alumino-Liquid-Phosphate-Based concrete as a Repair Material (MALP) https://rip.trb.org/View/2083660 Mon, 12 Dec 2022 16:23:59 GMT https://rip.trb.org/View/2083660 Update State Study No. 170 Deliverables with New PCC Test Data Revised final report for SS No. 170, “AASHTO 2002 Pavement Design Guide-Phase II” – Volume 1 https://rip.trb.org/View/1883838 Fri, 08 Oct 2021 09:12:41 GMT https://rip.trb.org/View/1883838 Permeability Reduction of Restrained Concrete in a Chloride-Rich Environment – Phase I https://rip.trb.org/View/1883835 Fri, 08 Oct 2021 09:01:45 GMT https://rip.trb.org/View/1883835