Roller-Integrated Compaction Monitoring for Hot-Mix Asphalt Overlay Construction
Publication: Journal of Transportation Engineering
Volume 139, Issue 12
Abstract
This paper documents recent experiences using roller-integrated compaction monitoring (RICM) technologies on hot-mix asphalt (HMA) overlay construction projects in Iowa. Recently, new special provisions (SPs) to specifications were implemented by the Iowa Department of Transportation on three projects that required the use of RICM technology for HMA compaction in the breakdown position. The bid costs for implementing the new RICM SPs are discussed in this paper. RICM data were collected and analyzed in conjunction with in situ falling weight deflectometer (FWD), nuclear density gauge, and surface temperature testing conducted on the project sites. Changes in roller compaction control value (CCV), relative compaction, and surface temperature with increasing pass count, and statistical correlations between these measurements are evaluated. RICM pass coverage information was analyzed using univariate and spatial geostatistical methods. Relationships between the FWD modulus and CCV yielded higher correlation coefficients than with relative compaction. Both the CCV and FWD modulus values were significantly influenced by the support conditions underneath the compaction layer, while relative compaction was not. Roller temperature measurements were influenced by the roller travel direction. Analysis of pass coverage information using univariate and geostatistical methods revealed significant differences between different projects. The results, analysis, and experiences documented in this paper provide information to improve future specifications and quality control or assurance guidelines for HMA construction.
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Acknowledgments
This study is sponsored by the Iowa DOT. Kei Uchiyama and Todd Mansell (previously with Sakai) provided support with the Sakai office software. Many Iowa DOT and contractor personnel assisted with coordination and execution of the field projects. Heath Gieselman, Justin Harland, Stephen Quist, and Andrew Willcuts of Iowa State University assisted with field testing. All their assistance and interest is greatly appreciated.
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Information & Authors
Information
Published In
Journal of Transportation Engineering
Volume 139 • Issue 12 • December 2013
Pages: 1164 - 1173
Copyright
© 2013 American Society of Civil Engineers.
History
Received: Dec 7, 2012
Accepted: Jul 15, 2013
Published online: Jul 17, 2013
Published in print: Dec 1, 2013
Discussion open until: Dec 17, 2013
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