THE EFFECTS OF A DRAINAGE LAYER ON THE INFILTRATION OF WATER INTO THE SUBGRADE /FRENCH/

THE GENERALIZED FORM OF DARCY'S LAW SHOWS THAT A DRAINAGE COURSE OF SAND PLACED ON A SUBGRADE OF COHESIVE SOILS ALLOWS WATER TO PASS INTO THIS SOIL, EVEN IF THE WATER IN THE DRAINAGE COURSE IS NOT FREE, BUT ONLY CAPILLARY. A DRAINAGE COURSE OF LARGE AGGREGATE WOULD MAKE A BLANKET COURSE NECESSARY AND THIS WOULD PRESENT THE SAME DIFFICULTY. THE ABSORPTION OF WATER BY THE SUBGRADE SOIL CANNOT THEREFORE BE PREVENTED OR REDUCED BY A DRAINAGE COURSE, BUT WILL IN FACT BE INCREASED UNLESS THE SOIL HAS BEEN MADE HYDROPHOBIC. WHEN THE SUBGRADE SOIL OF A ROAD MUST BE PROTECTED AGAINST AN INCREASE IN MOISTURE CONTENT, THIS CAN BE ACHIEVED BY WATERPROOFING OR SOIL STABILIZATION. /CRIC/FESR/LCPC/RRL/

  • Supplemental Notes:
    • Vol 12, No 3, PP 15-29, 3 FIGS, 1 TAB, 7 REFS
  • Corporate Authors:

    La Technique Routiere /Belgium

    ,    
  • Authors:
    • Ganse, R V
  • Publication Date: 1967-9

Subject/Index Terms

Filing Info

  • Accession Number: 00234497
  • Record Type: Publication
  • Source Agency: Road Research Laboratory /UK
  • Files: TRIS
  • Created Date: Apr 12 1971 12:00AM