POSSIBLE ERRORS IN MIX PRODUCTION

FEHLERMOEGLICHKEITEN BEI DER MISCHGUTHERSTELLUNG

THE PAPER DEALS WITH SOURCES OF ERRORS OCCURRING IN THE PRODUCTION OF MIXES. ERRORS IN COMPOSITION, DRYING, CLASSIFICATION, WEIGHING, MIXING AND STORAGE ARE DEALT WITH INDIVIDUALLY. IN ADDITION DISCREPANCIES OCCURRING IN TEST VALUES COMPARED WITH THEORETICAL VALUES ARE CONSIDERED. IT IS THUS SHOWN THAT A STANDARD DISCREPANCY OF 0.3% CAN BE OBSERVED IN THE CASE OF BINDER CONTENT. SURVEILLANCE CARDS CAN BE USED TO ASSESS NECESSARY ALTERATIONS IN THE ADJUSTMENT OF MIXING APPARATUS. THEY SHOULD CONTAIN BOTH THE GIVEN LOWER LIMIT AND THE REQUIRED THEORETICAL VALUE. USE OF THE CARDS CAN ALSO BE EXTENDED TO RESULTS OF STUDIES OTHER THAN THOSE RELATING TO BINDER CONTENT. PROCEEDING FROM THE CONJECTURE THAT STANDARD DEVIATIONS REPRESENT A MEASUREMENT FOR THE LEVEL OF CONTROL, THE GRADING CONTROL PLANT SHOULD CONTAIN AN INDICATOR BEARING THE DESIRED MEAN VALUE. DISCREPANCIES IN INDIVIDUAL MEASUREMENT RESULTS SHOULD NOT BE INCORRECTLY INTERPRETED AS MISTAKES BUT ALL AVAILABLE VALUES SHOULD BE ASSESSED BY STATISTICAL METHODS TO ESTABLISH FORECASTING QUALITY LEVELS AND FINAL ERRORS.

• Corporate Authors:

  GESTRATA

  ESCHENBACHGASSE 9
  WIEN,   Austria  A-1010
• Authors:
  • HINTSTEINER, E
  • SALM, G
• Publication Date: 1976

Language

• German

Media Info

• Pagination: 4P

Subject/Index Terms

• TRT Terms: Binder content; Bituminous mixtures; Errors; Manufactures; Mixers; Mixing plants; Statistics; Surveillance
• Uncontrolled Terms: Quality
• ITRD Terms: 4929: Binder content; 4967: Bituminous mixture; 6440: Error; 3647: Manufacture; 3649: Mixer; 3648: Mixing plant; 9063: Quality; 6555: Statistics; 9101: Surveillance
• Subject Areas: Data and Information Technology; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 01301852
• Record Type: Publication
• Source Agency: Bundesanstalt für Straßenwesen (BASt)
• Files: ITRD
• Created Date: Nov 21 2010 8:24AM