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/ The Use of Recycled Plastic in Concrete Pavements - Phase II https://rip.trb.org/View/2685709 Tue, 02 Jun 2026 12:23:14 GMT https://rip.trb.org/View/2685709 Validation of SCB Jc Prediction Model and Aging Correction Factor https://rip.trb.org/View/2404031 Wed, 17 Jul 2024 09:48:50 GMT https://rip.trb.org/View/2404031 Development of a Cyclic Semi-Circular Bend Test to Evaluate Asphalt Mixture Crack Propagation Properties at Intermediate Temperature https://rip.trb.org/View/1765419 Tue, 26 Jan 2021 10:55:56 GMT https://rip.trb.org/View/1765419 Implementation of Semi-Circular Bend (SCB) Test for QC/QA of Asphalt Mixtures https://rip.trb.org/View/1631601 Tue, 18 Jun 2019 12:20:20 GMT https://rip.trb.org/View/1631601 PPRC14 SPE 4.50: Performance-Related Specifications for Rubberized Asphalt Binder https://rip.trb.org/View/1441815 Wed, 04 Jan 2017 10:53:19 GMT https://rip.trb.org/View/1441815