MANUFACTURE OF BITUMINOUS MIXTURES - TECHNOLOGY CONTROL

FABRICATION DES ENROBES - TECHNOLOGIE - CONTROLE

THE AIM OF THE RESEARCH IS TO IMPROVE THE QUALITY OF BITUMINOUS MIXTURES BY INVESTIGATING MANUFACTURING AND CONTROL EQUIPMENT. IN 1979 IT IS ENVISAGED: TO CARRY OUT TESTS ON 5 BATCH MIXING PLANTS TO ESTABLISH CONTROL MODULI AND TOLERANCES; ADAPTATION OF A PROGRAMMABLE DATA CENTRALIZER USING A MICROPROCESSOR TO BATCH MIXING PLANTS; STUDY OF MIXING IN A BATCH MIXING PLANT (CAUSES OF BINDER CONTENT AND FINE CONTENT DISPERSIONS): EVALUATION OF MEASUREMENT QUALITY WITH RADIOACTIVE TRACERS AS REGARDS MOVEMENTS OF FINES IN PLANTS; STUDY OF SEGREGATION IN HOT STORAGE HOPPERS; EVALUATION OF POSSIBLE SAVINGS IN BITUMEN OR COMPACTION WITH PLANTS OF THE DRUM-DRYER-MIXER TYPE; STUDY OF AN AUTOMATIC SIEVING MACHINE.