How low is too low? Assessing the risk of low air voids using accelerated pavement testing

Eyal Levenberg, R. S. McDaniel, T. E. Nantung

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review


Various forms of asphalt pavement distress can be attributed, in many cases, to low air voids in mixtures during production and placement.When lowair voids are encountered during production, the specifying agency must decide whether to require the material that has already been placed to be removed and replaced or whether it can be left in place. This study was conducted, in part, in the INDOT/Purdue Accelerated Pavement Testing (APT) Facility to develop a decision-support tool for dealing with such events that is based on projected rutting performance of the pavement system. The responses to repetitive APT wheel passes of test pavements with low air voids in either the surface or intermediate course were measured using a laser based system. The permanent deformation of the top pavement layers is used, in conjunction with simplified mechanistic analysis and engineering judgment, to formulate the desired decision-support tool.
Original languageEnglish
Title of host publicationAdvances in Pavement Design through Full-scale Accelerated Pavement Testing
Number of pages7
PublisherCRC Press, Taylor & Francis Group
Publication date2012
ISBN (Print) 9780415621380
Publication statusPublished - 2012
Externally publishedYes
Event4th International Conference on Accelerated Pavement Testing - Davies, United States
Duration: 19 Jun 201221 Jun 2012


Conference4th International Conference on Accelerated Pavement Testing
Country/TerritoryUnited States


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