METHODS AND LAYING EQUIPMENT

METHODES ET MATERIELS D'EXECUTION

THE OBJECTIVE OF THE RESEARCH IS TO IMPROVE THE QUALITY OF MANUFACTURE AND LAYING BY SUPPLYING SELECTION CRITERIA FOR MACHINES AND THEIR OPERATIONAL PROCESS. IN 1979 IT IS ENVISAGED: (1) AS REGARDS MANUFACTURE, TO ASSESS THE USE OF A SIMPLIFIED METHOD OF CONTROL; SPECIAL ATTENTION WILL BE PAID TO DETERMINING THE SIGNIFICANCE OF TOLERANCES CURRENTLY SPECIFIED IN THE GENERAL TECHNICAL RECOMMENDATIONS WITH REGARD TO THE ACCURACY OF AGGREGATE FEEDERS. IT IS ALSO PROPOSED TO COMPLETE THE DEVELOPMENT OF THE RADIOACTIVE TRACER METHOD IN THE STUDY OF MIXERS; (2) AS REGARDS SPREADING, TESTS WILL BE CARRIED OUT WITH THE EXPERIMENTAL CUTTING RAMMER ON HIGH WORKABILITY MATERIAL (GRAVEL/FLY-ASH) BY MEASURING THE DYNAMIC FORCE EXERTED BY THE BLADE; AS REGARDS CONTROL, THE DEVELOPMENT OF THE MODULUS FOR FINISHERS WILL BE COMPLETED; (3) AS REGARDS COMPACTION, THE INTERPRETATION OF THE RESULTS OBTAINED DURING TESTS CARRIED OUT WITH THE EXPERIMENTAL VIBREX DEVICE WILL BE COMPLETED.