A STATISTICAL ANALYSIS OF CONCRETE AGGREGATE TEST RESULTS

THE REPORT DESCRIBES A STATISTICAL STUDY TO DETERMINE THE REPRODUCIBILITY OF CURRENT TEST METHODS AND FEASIBILITY OF USING STATISTICAL QUALITY CONTROL PROCEDURES FOR PORTLAND CEMENT CONCRETE AGGREGATE. THREE BRIDGE PROJECTS WERE STUDIED, TEST RESULTS ON RANDOMLY SELECTED SAMPLES WERE STATISTICALLY ANALYZED FOR VARIANCES. THE CONCLUSION WAS THAT SAND EQUIVALENT AND CLEANESS TESTS WERE SATISFACTORY FOR FIELD CONTROL. LARGE VARIANCES OF MATERIAL AND SIEVING OPERATIONS INDICATE NEED FOR MODIFICATION OF SPECIFICATIONS. THE REPORT RECOMMENDED THE USE OF MOVING AVERAGE BASED ON THE FIVE MOST RECENT INDIVIDUAL TEST RESULTS. THE REPORT CONTAINS VALUABLE ANALYSIS OF VARIANCE DATA CHARACTERISTIC OF MATERIAL, SAMPLING AND TESTING PROCEDURE. /AUTHOR/

  • Corporate Authors:

    California Division of Highways

    Bridge Department
    Sacramento, CA  USA  05914
  • Authors:
    • Sherman, G B
    • Watkins, R O
    • Folsom, J J
  • Publication Date: 1967-2

Subject/Index Terms

Filing Info

  • Accession Number: 00217466
  • Record Type: Publication
  • Source Agency: Bureau of Public Roads /US
  • Report/Paper Numbers: Hpr
  • Files: TRIS
  • Created Date: Jul 21 1994 12:00AM