THE VARIABILITY OF THE INDIRECT TENSILE STRIPPING TEST. FINAL REPORT

The purpose of this investigation was to determine the variability of the Virginia Department of Transportation's (VDOT's) indirect tensile stripping test. Five contractor labs and eight VDOT labs participated in the study. Each lab performed three replicate tests on each of two mixes, one containing hydrated lime and one containing chemical antistripping additive. The standard deviation was 3.5% for within-lab results and 6.1% for between-lab results. Lack of significant correlations between strength and voids total mix indicated that a strength correction procedure for voids is not necessary. Examination of the VDOT specification indicates that contractors need to maintain the average TSR (tensile strength ratio) of the alternative mix containing chemical additive at least two standard deviations above the minimum value to ensure that single tests do not fail.

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• Record URL:
  • https://rosap.ntl.bts.gov/view/dot/19265
• Corporate Authors:

  Virginia Transportation Research Council

  530 Edgemont Road
  Charlottesville, VA  United States  22903

  Virginia Department of Transportation

  1401 East Broad Street
  Richmond, VA  United States  23219

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Maupin Jr, G W
• Publication Date: 1990-7

Media Info

• Features: Appendices; Figures; References; Tables;
• Pagination: 42 p.

Subject/Index Terms

• TRT Terms: Antistrip additives; Asphalt mixtures; Calcium hydroxide; Specifications; Standard deviation; Stripping (Pavements); Tensile strength; Tension tests; Variables
• Uncontrolled Terms: Indirect tensile test
• Subject Areas: Highways; Materials; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 00496776
• Record Type: Publication
• Report/Paper Numbers: FHWA/VA-91/5, VTRC 91-R5
• Contract Numbers: 2642
• Files: NTL, TRIS, USDOT, STATEDOT
• Created Date: Aug 31 1991 12:00AM