@inproceedings{9073964dd27c4b4598117faf52ca1f2c,
title = "Mechanistic Assessment of Layered Pavement Foundation System Using Validated Intelligent Compaction Measurements",
abstract = "Assessment of pavement foundation layer in situ using mechanistic parameters such as stress-dependent resilient modulus can provide a validation of the input parameters assumed during pavement design. In this paper, results from a recent field study on the Illinois Tollway Elgin O'Hare Expressway construction project is presented. The project involved developing geospatially referenced validated intelligent compaction (VIC) measurements through a field calibration process using automated cyclic plate load testing, which produced coefficient of determination (R2) values of >0.9. The VIC measurements were obtained using an instrumented smooth drum vibratory roller that was programmed to output stress-dependent resilient modulus (Mr). VIC-Mr on a compacted subgrade and the overlaid granular layer are presented in this paper. The VIC maps and field observations revealed the compaction layers and pavement foundation materials to be highly non-uniform and to have built-in low stiffness {"}soft{"} areas and high spatial variability that are not necessarily addressed with conventional quality control (QC)/quality assurance (QA) observation and spot testing. The VIC maps on the unbound subbase layer showed reflections of the {"}soft{"} and {"}stiff{"} areas in the underlying subgrade.",
author = "White, {David J.} and Pavana Vennapusa and Erol Tutumluer and Maziar Moaveni",
note = "Publisher Copyright: {\textcopyright} 2019 American Society of Civil Engineers.; 8th International Conference on Case Histories in Geotechnical Engineering: Geotechnical Materials, Modeling, and Testing, Geo-Congress 2019 ; Conference date: 24-03-2019 Through 27-03-2019",
year = "2019",
doi = "10.1061/9780784482124.043",
language = "English (US)",
isbn = "9780784482124",
series = "Geotechnical Special Publication",
publisher = "American Society of Civil Engineers",
number = "GSP 310",
pages = "421--429",
editor = "Meehan, {Christopher L.} and Sanjeev Kumar and Pando, {Miguel A.} and Coe, {Joseph T.}",
booktitle = "Geotechnical Special Publication",
edition = "GSP 310",
}