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ABRASION BEHAVIOUR - RESISTANCE TO POLISHING AND STUDDED TYRES

ABRIEBVERHALTEN - WIDERSTANDSFAEHIGKEIT GEGEN POLIEREN UND V ERHALTEN GEGEN SPIKESREIFEN

THE CONSTRUCTION OF SURFACINGS WHICH ARE EXTENSIVELY RESISTANT TO STUDDED TYRES IS A VITAL PROBLEM, NOT ONLY IN AUSTRIA. IN A PRECEEDING STUDY, CHARACTERISTIC VALUES FOR WORKING OUT THE REQUIREMENTS OF AGGREGATES WITH RESPECT TO ABRASION AND POLISHING WERE DETERMINED BY THE FEDERAL INSTITUTE FOR TESTING AND RESEARCH ARSENAL, BUT THESE ONLY RELATED TO THE AGGREGATE COMPONENTS THEMSELVES. AS PART OF THIS STUDY THE AGGREGATE IS TO BE TESTED WITHIN THE BITUMINOUS BOND OF THE WEARING COURSE. THE TESTS ARE TO BE MADE BOTH ON SAMPLES OF WEARING COURSE MANUFACTURED IN THE LABORATORY AND ON DRILLED CORES. BEHAVIOUR IN THE NON- TRAFFICKED STATE AND AFTER CERTAIN CONDITIONS OF WEAR IS TO BE EXAMINED REGULARLY. THROUGH COMPARISON WITH OTHER PARAMETERS OF THE ROAD (TRAFFIC FREQUENCY, LOADING AND FORMATION OF TRACKING RUTS, INFLUENCE OF THE WEATHER, SPREADING OF DE-ICING SALT AND INFLUENCE OF STEEL STUDS), BASIC DATA ON THE DURABILITY OF WEARING COURSES CAN BE DETERMINED, APART FROM THE ABRASION AND POLISHING WHICH OCCURS.