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/ Development of Design Profiles & Parameters using Measurement While Drilling (MWD) and Permeafor Data https://rip.trb.org/View/2582031 Thu, 24 Jul 2025 14:03:49 GMT https://rip.trb.org/View/2582031 Performance-Based Design of Permeable Friction Courses Using Warm Mix Asphalt for Enhanced Safety and Durability https://rip.trb.org/View/2480326 Wed, 01 Jan 2025 13:45:25 GMT https://rip.trb.org/View/2480326 Updating VDOT’s Concrete Permeability Requirements https://rip.trb.org/View/2476010 Sat, 14 Dec 2024 08:50:43 GMT https://rip.trb.org/View/2476010 Permeability of Granular Materials, and Blended Salvaged Granular Materials https://rip.trb.org/View/2379666 Tue, 14 May 2024 14:44:48 GMT https://rip.trb.org/View/2379666 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 Establishing NDE Protocols for Use in Early Age Bridge Deck Preservation Strategies https://rip.trb.org/View/2071679 Tue, 29 Nov 2022 09:14:06 GMT https://rip.trb.org/View/2071679 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 Factors that Influence the Variability of Concrete Surface Resistivity of Field Cast Samples https://rip.trb.org/View/1934173 Tue, 29 Mar 2022 09:47:00 GMT https://rip.trb.org/View/1934173 Influence of Internal Curing on Concrete’s Permeability in Simulated Field Conditions https://rip.trb.org/View/1906849 Fri, 28 Jan 2022 11:22:50 GMT https://rip.trb.org/View/1906849 Optimizing Aggregate Gradation to Reduce Concrete’s Permeability https://rip.trb.org/View/1906848 Fri, 28 Jan 2022 11:11:42 GMT https://rip.trb.org/View/1906848 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 Rating Concrete Permeability Based on Resistivity Measurements https://rip.trb.org/View/1877221 Thu, 09 Sep 2021 10:01:20 GMT https://rip.trb.org/View/1877221 Measuring Concrete Permeability with CHIP https://rip.trb.org/View/1865407 ic) of the concrete. Next, the performance of the silane sealers was evaluated in field cores. Finally, the long-term change in Dic was measured with mixtures that contained different amounts and types of fly ash. The reliability of the technique was further improved by increasing the number of orientation to evaluate the sample and the width of the analysis area. Finally, work was done to decrease the testing time from 28 days to roughly 6 hours. The test can be accelerated by using electric current to drive the tracer through the concrete. Further research is needed to make this technique applicable to a wide range of materials. An overview of the test method is provided with the suggested language that may be helpful in developing a testing standard. ]]> Wed, 14 Jul 2021 15:53:31 GMT https://rip.trb.org/View/1865407 Validation of the PFC Underdrain to Remove Standing Water on Pavement Surface https://rip.trb.org/View/1652663 Wed, 18 Sep 2019 15:30:54 GMT https://rip.trb.org/View/1652663 SPR-4336: Improvement of Scaling Resistance of Pavement Concrete Using Titanium Dioxide (Tio2) and Other Nano-additives https://rip.trb.org/View/1577628 Fri, 04 Jan 2019 14:22:14 GMT https://rip.trb.org/View/1577628