NON-DESTRUCTIVE DETERMINATION OF THE CHARACTERISTIC VALUES OF THE ROAD WITH THE MEASURING VEHICLE EQUIPMENT, FOR THE PURPOSE OF CONTROL AND ACCEPTANCE BY THE BUILDING AUTHORITIES

ZERSTOERUNGSFREIE BESTIMMUNG VON KENNGROESSEN DER STRASSE MIT DEN GERAETEN DES MESSFAHRZEUGES ZUM ZWECK DER KONTROLLE UND ABNAHME DURCH DIE BAUBEHOERDE

A MEASURING VEHICLE EQUIPPED WITH DIGITAL RECORDERS AND MEANS FOR COMPUTER EVALUATION OF DATA IS ABLE TO DETERMINE THE CHARACTERISTIC VALUES OF ROADS DURING AND AFTER CONSTRUCTION. THE MEASURED VALUES HAVE TO BE CHECKED STATISTICALLY FOR CORRELATION WITH QUALITY CRITERIA OF THE ROAD. ON ROADS UNDER CONSTRUCTION MEASUREMENTS ARE TO BE MADE OF THE COMPACTION OF BITUMINOUS PAVEMENTS DURING LAYING, AND THE PARAMETERS WHICH AFFECT THIS, TOGETHER WITH MEASUREMENTS OF THE DENSITY, THE BITUMEN CONTENT, THE VOIDS CONTENT AND THE THICKNESS OF BITUMINOUS ROADBASES; THE EFFECTS OF THESE VALUES ON CHANGES IN THE DYNAMIC MODULUS OF ELASTICITY ARE TO BE EXAMINED. ON FINISHED ROADS MEASUREMENTS ARE ALSO TO BE MADE OF THE COEFFICIENT OF SLIDING, SKIDDING RESISTANCE, THE TENDENCY TO AQUAPLANING, THE SURFACE ROUGHNESS, THE DEPTH OF WATER IN THE RUTS AND THE EVENNESS, AND THE EFFECT OF THESE VALUES ON ONE ANOTHER IS TO BE STUDIED. THE METHODS AND EQUIPMENT USED FOR ALL THE MEASUREMENTS ARE TO BE TESTED FOR APPLICABILITY AND ACCURACY.