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 Synthesis of Information Related to Highway Practices. Topic 55-05. Use and Availability of Supplementary Cementitious Materials for Concrete https://rip.trb.org/View/2209729 Mon, 10 Jul 2023 21:12:39 GMT https://rip.trb.org/View/2209729 Surface Resistivity for Concrete Quality Assurance https://rip.trb.org/View/1595447 Mon, 12 Aug 2019 19:37:34 GMT https://rip.trb.org/View/1595447