Sample Size Requirements for Field Permeability Measurements of Hot-Mix Asphalt Pavements

The permeability of coarse-graded asphalt mixtures has been of great concern in recent years. Asphalt mixes that are permeable are susceptible to a number of distresses, such as moisture damage, raveling, cracking, and binder oxidation. In this study, seven sites were mapped according to the vacuum permeameter method to determine the location and distribution of permeable voids. The variability of the sites was evaluated to determine an appropriate sample size for permeability testing. Relatively impermeable pavements were consistent; pavements with moderate or high permeability were more variable. Relationships between sample size, reliability, and testing discrimination are presented. Based on the range of standard deviations measured in this project, a minimum sample size of 10 is recommended for pavements with marginal densities or variable consistency. On the basis of the results of this study, permeability test results are highly dependent on the placement of the permeameter during testing, the effective testing area of the permeameter, and the variability of the pavement. Field permeability testing may have value as a forensic tool, but the large sample size required is not conducive to standard quality control procedures.

• Record URL:
  • https://doi.org/10.3141/2001-07
• 
• Summary URL:
  • http://scholar.google.com/scholar_lookup?title=Sample+Size+Requirements+for+Field+Permeability+Measurements+of+Hot-Mix+Asphalt+Pavements&author=S.+Williams&publication_year=2007
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9780309104272
• Authors:
  • Williams, Stacy Goad
• Publication Date: 2007

Language

• English

Media Info

• Media Type: Print
• Features: Figures; Photos; References; Tables;
• Pagination: pp 56-62
• Monograph Title: Bituminous Paving Mixtures 2007
• Serial:
  • Transportation Research Record: Journal of the Transportation Research Board
  • Issue Number: 2001
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Air voids; Asphalt mixtures; Asphalt pavements; Field tests; Hot mix asphalt; Permeability; Quality control
• Uncontrolled Terms: Coarse graded mixes; Sample size
• Subject Areas: Highways; Materials; Pavements; I23: Properties of Road Surfaces; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 01044191
• Record Type: Publication
• ISBN: 9780309104272
• Files: TRIS, TRB, ATRI
• Created Date: Mar 21 2007 12:46PM