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/ Detailed Event Mean Concentrations for Transportation Facilities https://rip.trb.org/View/2569143 Tue, 24 Jun 2025 11:35:50 GMT https://rip.trb.org/View/2569143 Impact of Sulfate Ion and Soft Grout on Post-Tensioned Concrete Bridges https://rip.trb.org/View/1512674 Wed, 16 May 2018 09:20:09 GMT https://rip.trb.org/View/1512674