PRECISION OF SELECTED CONCRETE TEST METHODS

Precision statements for the following portland cement concrete test methods are presented: compressive strength, flexural strength, unit weight, air content, and ball penetration. Testing programs and analytical methods are described in detail. Wherever possible, operator, equipment, and residual components of error are isolated, and specific recommendations for improving test precision are given. Analytical techniques used include analysis of variance, randomized block, latin square, and least squares regression. Also presented are analyses and discussions on the following related subjects: Prediction of flexural strength from compressive strength; use of the air meter base for determining unit weight; use of the K-Meter for measuring concrete consistency; and, precision of the cement factor determination.

• Corporate Authors:

  California Department of Transportation

  Transportation Laboratory
  5900 Folsom Boulevard
  Sacramento, CA  United States  95819

  Federal Highway Administration

  Office of Research and Development, 1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Benson, P E
  • Sundquist, C R
• Publication Date: 1976-11

Media Info

• Pagination: 50 p.

Subject/Index Terms

• TRT Terms: Accuracy; Air content; Air entrainment; Analysis of variance; Cement factor; Compressive strength; Concrete; Concrete tests; Consistency; Flexural strength; Least squares method; Mechanical properties; Mechanical tests; Portland cement; Portland cement concrete; Regression analysis; Test procedures; Weight
• Uncontrolled Terms: Reproducibility
• Old TRIS Terms: Latin squares; Unit weight
• Subject Areas: Data and Information Technology; Highways; Materials;

Filing Info

• Accession Number: 00151240
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: FHWA/RD/M-0341 Intrm Rpt., 631153
• Files: NTIS, TRIS, USDOT, STATEDOT
• Created Date: Apr 13 1977 12:00AM