Recommended Citation
Pajo, B., Becker, P. J., Bourdeau, P. L., & Santagata, M. (2023). Data interpretation of automated plate load test (APLT) for real-time in situ determination of unbound layer resilient modulus (Joint Transportation Research Program Publication No. FHWA/IN/JTRP-2023/22). West Lafayette, IN: Purdue University. https://doi.org/10.5703/1288284317653
DOI
10.5703/1288284317653
Abstract
This project examined the results of an extensive program of (1) cyclic plate loading tests carried out at Purdue University’s S-BRITE site on two testing strips comprised of a coarse aggregate (Indiana #53) subbase layer compacted over either untreated or cement-stabilized subgrade, and (2) static loading tests conducted on #53 aggregate compacted in a 3.6-foot-deep testing pit. The testing program on the two strips included multistage resilient modulus (MR) tests and extended cyclic performance tests with random distributed loading (RDL) tests on both the subbase and the underlying subgrade. Two of the RDL tests were performed at locations where a nonwoven geotextile had been placed between subgrade and subbase. The work was aimed at improving the understanding of the behavior of subbase and subgrade materials under cyclic loading, mitigating ambiguities regarding the performance of subbase and subgrade materials, and exploring the use of automated plate load tests for determining such properties, ultimately advancing the state of pavement design practice at INDOT.
Report Number
FHWA/IN/JTRP-2023/22
Keywords
aggregates, angle of internal friction, finite element method, geosynthetics, modulus of resilience, plate bearing test, rutting, subbase materials, subgrade materials
SPR Number
4547
Performing Organization
Joint Transportation Research Program
Sponsoring Organization
Indiana Department of Transportation
Publisher Place
West Lafayette, Indiana
Date of this Version
2023