REGENERATION OF BITUMINOUS MIXTURES

REGENERATION DES ENROBES

THE RECOVERY AND RE-USE OF AGED BITUMINOUS MIXTURES OR OF MIXTURES THAT HAVE PROVED TO HAVE A MAJOR DEFICIENCY SINCE AN EARLY STAGE IN THEIR LIFE APPEARS TO BE WORTH CONSIDERING IN THE PRESENT ECONOMIC CIRCUMSTANCES. THE OBJECTIVE OF THE RESEARCH IS TO EXAMINE METHODS OF REUSING AGED BITUMINOUS MIXTURES OR MIXTURES WITH DEFECTS AT AN EARLY AGE. IN 1979 IT IS ENVISAGED: TO CONTINUE TO STUDY THE TIME-RELATED BEHAVIOUR OF SITES WHERE THE UPPER PART OF BITUMINOUS MIXTURES IS RECYCLED BY MEANS OF THE REPAVER AND REGETHERM CUTLER PROCESS ON VARIOUS MOTORWAY SITES; TO INVESTIGATE THE POSSIBILITIES OFFERED BY MIXING PLANT WITH SPECIAL DRYERS (WIBAU-TSM) FOR THE RE-USE OF BITUMINOUS MIXTURES RECOVERED BY A COLD OR HOT PROCESS; TO STUDY RENOVATING AGENTS AND THEIR INFLUENCE ON THE BINDERS OF RECYCLED MIXTURES; TO DRAFT A SUMMARY REPORT ON POSSIBLE FIELDS OF USE.