THE REPRODUCIBILITY OF THE POLISHED STONE VALUE DETERMINATION: CO-OPERATIVE TESTS, 1964

CO-OPERATIVE WORK IS DESCRIBED THAT WAS CARRIED OUT BY SIX LABORATORIES IN 1964, TO FIND THE REPRODUCIBILITY OF THE IMPROVED METHOD OF DETERMINING THE POLISHED-STONE VALUE (PSV) OF AN AGGREGATE. THE REPRODUCIBILITY WAS FOUND TO BE PLUS OR MINUS 2.0 UNITS AT A 95 PERCENT PROBABILITY LEVEL. ONLY ONE OF THE CO-OPERATING LABORATORIES OBTAINED RESULTS WHICH DEVIATED APPRECIABLEY FROM THE MEAN, AND SUBSEQUENT WORK (ALSO DESCRIBED) SHOWED THAT THIS EXCEPTIONAL DEVIATION WAS CAUSED, AT LEAST IN PART, BY THE WAY IN WHICH THIS LABORATORY MANUFACTURED ITS TEST SPECIMENS. RECOMMENDATIONS ARE GIVEN FOR THE WAY IN WHICH SPECIFICATIONS CAN BE QUALIFIED TO TAKE INTO ACCOUNT THE REPRODUCIBILITY OF THE PSV DETERMINATION. /RRL/A/

• Supplemental Notes:
  • Rrl Tech NoTE TN 251, 10 PP, 6 TAB, 2 REF
• Corporate Authors:

  MINISTRY OF TRANSPORT, LONDON (UK)

  ,    

  Road Research Laboratory /UK

  ,    
• Authors:
  • Hosking, J R
• Publication Date: 1968-1

Subject/Index Terms

• TRT Terms: Methodology; Polished aggregates; Present value; Specifications; Test procedures
• Uncontrolled Terms: Reproducibility; Value
• Subject Areas: Geotechnology; Highways; Pavements;

Filing Info

• Accession Number: 00217696
• Record Type: Publication
• Source Agency: Road Research Laboratory /UK
• Files: TRIS
• Created Date: Apr 27 1970 12:00AM