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/ Evaluate New Methods to Determine Type and Percentage of Stabilizer in a CSM Layer – Phase I https://rip.trb.org/View/2262760 Fri, 06 Oct 2023 10:37:10 GMT https://rip.trb.org/View/2262760 Utilization of XRF for ASR https://rip.trb.org/View/2085719 Fri, 16 Dec 2022 14:15:15 GMT https://rip.trb.org/View/2085719 Quantitative Analysis of Reflective Glass Beads for Heavy Metals https://rip.trb.org/View/2077945 Tue, 06 Dec 2022 09:48:38 GMT https://rip.trb.org/View/2077945 Using the Portable XRF to Identify/Verify Field Material Properties https://rip.trb.org/View/1656146 Wed, 02 Oct 2019 09:55:07 GMT https://rip.trb.org/View/1656146