Concrete Pavement Quality Control Testing Requirements Needed for the Super Air Meter

Concrete freeze-thaw durability is prominently linked to the air void system within the concrete. Concrete pavements in Kansas undergo repetitive freeze-thaw cycles. Total air content measurements currently used on fresh concrete do not provide any indication of the air void size distribution. The Super Air Meter (SAM) addresses this issue by providing the air content and an additional number, the SAM number, which is claimed by the manufacturer to correlate to the concrete hardened air void spacing factor. In order to determine the variability and the frequency of testing needed for the SAM test, 16 sites across Kansas were investigated. The SAM test was performed at least once for every hour of paving. This study found that the SAM number has a 154 percent higher coefficient of variation per site than the total air content. It was also seen that there is a correlation between the air content and the SAM number. It is recommended that the Kansas Department of Transportation (KDOT) perform the SAM test at least four times per site per day.

• Record URL:
  http://dmsweb.ksdot.org/AppNetProd/docpop/docpop.aspx?clienttype=html&docid=9703231
• Summary URL:
  http://dmsweb.ksdot.org/AppNetProd/docpop/docpop.aspx?clienttype=html&docid=9703232
• Corporate Authors:

  Kansas State University Transportation Center

  Kansas State University
  Department of Civil Engineering
  Manhattan, KS  United States  66506

  Kansas Department of Transportation

  Bureau of Research
  2300 SW Van Buren Street
  Topeka, KS  United States  66611-1195

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Riding, Kyle A
  • Albahttiti, Mohammed T
• Publication Date: 2016-10

Language

• English

Media Info

• Media Type: Digital/other
• Edition: Final Report
• Features: Appendices; Figures; Photos; References; Tables;
• Pagination: 34p

Subject/Index Terms

• TRT Terms: Air content; Air voids; Concrete pavements; Freeze thaw durability; Measuring instruments; Paving; Quality control
• Geographic Terms: Kansas
• Subject Areas: Construction; Highways; Pavements;

Filing Info

• Accession Number: 01616148
• Record Type: Publication
• Report/Paper Numbers: FHWA-KS-16-14
• Contract Numbers: C2090
• Files: TRIS, ATRI, USDOT, STATEDOT
• Created Date: Nov 9 2016 1:24PM