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.

Media Info

  • Pagination: 50 p.

Subject/Index Terms

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