GROUP ANALYSES TO TEST THE USE OF A METHOD OF DETERMINING THE PRESENCE OF TRINIDAD ASPHALT IN BITUMINOUS MIXTURE

RINGANALYSE ZUR PRUEFUNG DER ANWENDBARKEIT EINES VERFAHRENS ZUM NACHWEIS VON TRINIDAD ASPHALT IN ASPHALTMISCHGUT

THE AIM IS TO TAKE THE TEST DEVELOPED BY THE LABORATORIES COOPERATING IN THE WORKING GROUP ON THE USE OF TRINIDAD ASPHALT IN BITUMINOUS ROAD CONSTRUCTION, AND TO SUBJECT IT TO A GROUP ANALYSIS TO DETERMINE WHETHER IT IS A SUITABLE TEST PROCEDURE FOR CHECKING THE PRESENCE OF TRINIDAD ASPHALT. IT IS PLANNED TO TAKE 60 SAMPLES (40 OF GUSSASPHALT AND 20 OF ASPHALTIC CONCRETE); OF THE GUSSASPHALT SAMPLES 10 SHOULD CONTAIN NO TRINIDAD ASPHALT, 20 SHOULD CONTAIN 20 - 30 PERCENT OF WEIGHT OF TRINIDAD ASPHALT, AND 10 SHOULD CONTAIN MORE THAN 30 PERCENT OF WEIGHT OF TRINIDAD ASPHALT. THE PROPORTIONS OF TRINIDAD ASPHALT ARE RELATED TO EPURE AND CALCULATED ON BINDER. OF THE ASPHALTIC CONCRETE SAMPLES, 10 SHOULD CONTAIN NO TRINIDAD ASPHALT AND 10 SHOULD CONTAIN 20 - 30 PERCENT OF WEIGHT OF TRINIDAD ASPHALT. A TOTAL OF 300 SAMPLES ARE TO BE TAKEN AT FIVE OF THE LABORATORIES INVOLVED IN THE GROUP ANALYSIS.