CEMENT AND LIME IN CARRIAGEWAY STABILIZED LAYERS (IN FRENCH)

A GENERAL STUDY IS PRESENTED OF THE VARIOUS TYPES OF MODERN PAVEMENT STRUCTURES: RIGID PAVEMENTS AND FLEXIBLE PAVEMENTS TO WHICH PAVEMENTS TREATED WITH HYDRAULIC BINDERS BELONG. THE DISADVANTAGES ARISING FROM THE LACK OF STABILIZED LAYERS IN A PAVEMENT STRUCTURE ARE OUTLINED: THE GRAINS ARE SUBJECTED TO MICRO-DISPLACEMENTS, AND THROUGH FRICTION AND ATTRITION PRODUCE FINES WHICH DESCREASE THE STRENGTH OF THE PAVEMENT AND MAKE IT PERVIOUS TO WATER, RESULTING EVENTUALLY IN FAILURE. IN TREATED LAYER PAVEMENTS, THIS PROCESS DOES NOT OCCUR; THE CAUSE OF FAILURE IS THE REPEATED TENSILE STRESSES WHICH ARE DUE TO TRAFFIC AND OCCUR AT THE BASE OF THE TREATED LAYERS. THE EFFECTS OF LIME (STABILIZATION, IMPERVIOUSNESS TO WATER, AND POZZOLANIC HARDENING) ARE DISCUSSED TOGETHER WITH SOIL AND BINDER CHARACTERISTICS. THE TREATMENT FOR EACH TYPE OF SOIL IS DESCRIBED, AND EMPHASIS LAID ON THE IMPORTANCE OF LABORATORY STUDIES ON TENSILE STRENGTH AND FATIGUE. MENTION IS MADE OF A NEW ECONOMICAL AND EFFICIENT METHOD OF STABILIZING FINE SOIL BY MEANS OF FAT LIME INSTEAD OF CEMENT. FINE WET SOIL CAN BE TREATED WITH QUICK LIME WHICH, BY HYDRATION, LOWERS THE MOISTURE CONTENT SUFFICIENTLY TO MAKE THE SOIL WORKABLE. EXAMPLES ARE GIVEN OF WORK CARRIED OUT ON CONSTRUCTION SITES, AND THE ADVANTAGES AND DISADVANTAGES OF VARIOUS METHODS ARE DISCUSSED. /LCPC/RRL/

  • Supplemental Notes:
    • 58 Pp, 4 FiG, 26 PHOT
  • Corporate Authors:

    Eyrolles

    61 Boulevard Saint-Germain
    Paris,   France 
  • Publication Date: 0

Subject/Index Terms

Filing Info

  • Accession Number: 00232010
  • Record Type: Publication
  • Source Agency: Road Research Laboratory /UK
  • Files: TRIS
  • Created Date: Aug 26 1970 12:00AM