GROUP ANALYSIS TO DETERMINE REPEATABILITY AND COMPARABILITY IN DETERMINATION OF PARTICLE SHAPE

RINGANALYSE ZUR ERMITTLUNG DER WIEDERHOLBARKEIT UND DER VERGLEICHBARKEIT BEI DER BESTIMMUNG DER KORNFORM

THE RECOMMENDATIONS FOR THE TESTING OF AGGREGATES IN ROADS, PUBLISHED IN 1975, CONTAIN TEST PROCEDURES WHOSE ERRORS ARE UNKNOWN. THE SAME APPLIES TO THE PROCEDURE FOR DETERMINING PARTICLE SHAPE, PART 6, SHEET 6 OFF THE NEW RECOMMENDATIONS. IN ASSOCIATION WITH THE FORSCHUNGSGESELLSCHAFT FUER DAS STRASSENWESEN WORKING COMMITTEE ON AGGREGATE TESTING, A GROUP ANALYSIS IS TO BE MADE TO DETERMINE REPEATABILITY AND COMPARABILITY OF METHODS OF DETERMINING PARTICLE SHAPE. TWELVE LABORATORIES WILL PARTICIPATE IN THE STUDIES. THE RESULTS ARE TO BE INCORPORATED INTO THE RECOMMENDATION.