MANUFACTURE AND STORAGE OF PRECRUSHED SLAG - LAYING OF PRECRUSHED GRAVEL-SLAG MIXTURES

FABRICATION ET STOCKAGE DES LAITIERS PREBROYES - MISE EN OEUVRE DE GRAVE-LAITIER PREBROYE

A STUDY IS PRESENTED OF DIFFERENT TYPES OF CRUSHER, THEIR OUTPUT AND OF THE STORAGE CONDITIONS OF MIXTURES CONTAINING PRECRUSHED SLAG. THE LOAD AND CRUSHING TIME ARE IMPORTANT FACTORS, AND DETAILS OF THOSE PARAMETERS ARE GIVEN FOR ROD GRINDERS. PRECRUSHING INCREASES SETTING DURING STORAGE, AND IT WAS FOUND NECESSARY TO CONTROL THE APTITUDE OF SEVERAL SLAGS TO STORAGE WITHOUT SETTING UNDER NORMAL INDUSTRIAL CONDITIONS. COMPARATIVE STUDIES WERE CONDUCTED IN THE LABORATORY OF COMPRESSIVE AND TENSILE STRENGTH ON DIFFERENT GRAVEL-LIMESTONE MIXTURES STABILIZED WITH SLAG, CRUSHED OR NOT. THOSE STUDIES WERE COMPLETED BY IN-SITU INVESTIGATIONS. A TWO-YEAR FOLLOW-UP STUDY SHOWED THE USEFULNESS OF STABILIZING GRAVEL WITH PRECRUSHED SLAG, EVEN WITH RATIOS OF 8% SLAG TO 12% FINES. PAVEMENT LAYERS BUILT WITH THESE MATERIALS WERE FOUND TO HAVE SATISFACTORY COHESION WHEN TESTED WITH VIBRATORS AND DEFLECTOGRAPHS.

Language

  • French

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 01290028
  • Record Type: Publication
  • Source Agency: Institut Francais des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux (IFSTTAR)
  • Files: ITRD
  • Created Date: Nov 21 2010 2:02AM