Correlation of Laboratory-Compacted and Field-Compacted Hot-Mix Asphalt Permeability
This report presents a summary of results, analysis, and development of a protocol for testing permeability of asphalt specimens prepared in the laboratory or produced from field cores. The objective of the research project was to evaluate the correlation between the laboratory-measured permeability of laboratory prepared specimens and the laboratory-measure permeability of corresponding field cores. Field cores and loose, hot-mix asphalt samples were obtained from six constructed pavements. Four were 9.5-mm Superpave mixes and two were 12.5-mm mixes. Falling head permeability tests were conduced on both field cores and Superpave gyratory compacted (SGC) specimens covering a range of air voids and porosities. These tests indicated that in general permeability increases as the air void or porosity increases. For the 12.5-mm mixes, a porosity level of approximately 7 to 8 percent for both field cores and lab-compacted specimens seems to be a threshold value beyond which permeability begins to increase drastically. For the 9.5-mm mixes, the cores and lab-compacted specimens could be considered practically impervious for porosities lower than 8 percent. In general, laboratory-prepared specimens demonstrated lower permeability compared with field cores at comparable levels of porosity and thickness, even though no unique correlation could be developed based on the results of this investigation. The upper limits of 1.25x10(-3) cm/sec and 1.5x10(-3) cm/sec are recommended for SGC specimens and field cores, respectively, assuming specimens have air void and thickness levels established in the test protocol proposed under this research.
- Record URL:
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Corporate Authors:
Pennsylvania State University, University Park
Pennsylvania Transportation Institute, Transportation Research Building
University Park, PA United States 16802Pennsylvania Department of Transportation
Bureau of Planning and Research
400 North Street, 6th Floor
Harrisburg, PA United States 17120-0064Federal Highway Administration
1200 New Jersey Avenue, SE
Washington, DC United States 20590 -
Authors:
- Solaimanian, Mansour
- Publication Date: 2010-9
Language
- English
Media Info
- Media Type: Web
- Edition: Final Report
- Features: Appendices; Figures; References; Tables;
- Pagination: 39p
Subject/Index Terms
- TRT Terms: Asphalt; Compactors; Hot mix asphalt; Permeability; Superpave
- Uncontrolled Terms: Gyratory compactors
- Subject Areas: Materials; I31: Bituminous Binders and Materials;
Filing Info
- Accession Number: 01324977
- Record Type: Publication
- Report/Paper Numbers: FHWA-PA-2010-015-060704, LTI 2011-05
- Contract Numbers: 355101
- Files: TRIS, USDOT, STATEDOT
- Created Date: Jan 14 2011 10:20AM