CONTROL COMPLIANCE AND SPECIFICATIONS

THE CONTROL OF THE QUALITY OF BITUMINOUS ROAD MIXTURES BY THE MANUFACTURER, AND THE ACCEPTANCE-TESTING OF THE MATERIAL BY THE CUSTOMER, BOTH DEPEND ON THE ANALYSIS OF SAMPLES OF THE MATERIAL, THE SAMPLES ACTUALLY ANALYSED BEING A VERY SMALL PROPORTION OF THE TOTAL MATERIAL. GREAT CARE IN TAKING THE SAMPLES AND IN ANALYSING THEM IS ABSOLUTELY ESSENTIAL IF THE RESULTS ARE TO BE OF ANY USE, BUT EVEN WITH PROPERLY TAKEN AND ANALYSED SAMPLES THE INTERPRETATION OF ANALYSIS RESULTS SHOULD BE MADE WITH A DUE APPRECIATION OF THE RISKS OF ALL SAMPLING TECHNIQUES. THE ANALYSIS-RESULT OF A SINGLE SAMPLE IS MEANINGLESS AND A SUCCESSION OF SAMPLES IS NEEDED TO ESTABLISH A PATTERN OF THE QUALITY OF THE MATERIAL. COMPLETE /100 PER CENT/ COMPLIANCE OF ALL THE ANALYSIS RESULTS WITH THE SPECIFICATION IS HIGHLY UNLIKELY UNLESS THE LIMITS OF THE SPECIFICATION ARE SET UNREALISTICALLY WIDE AND A STATISTICAL APPROACH IS NEEDED TO ENABLE SENSIBLE INTERPRETATION TO BE MADE OF A SERIES OF RESULTS. THE PAPER WAS PREPARED AT THE ROAD RESEARCH LABORATORY. /RRL/

  • Supplemental Notes:
    • Vol31, No2, PP6-9, 2PHOT
  • Authors:
    • NICHOLAS, J H
  • Publication Date: 1965-7

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Filing Info

  • Accession Number: 00210522
  • Record Type: Publication
  • Source Agency: Road Research Laboratory /UK
  • Files: TRIS
  • Created Date: Dec 12 1994 12:00AM