RECENT DEVELOPMENTS IN THE DESIGN AND CONSTRUCTION OF SOIL- EMULSION ROAD MIXTURES

THIS PAPER BRIEFLY REVIEWS THE THEORY OF THE STABILIZATION OF SOILS WITH EMULSIFIED ASPHALTS. THE MAJOR PART IS DEVOTED TO A DESCRIPTION OF RECENT IMPROVEMENTS IN FIELD OPERATIONS WHICH INSURE THE SUCCESS OF THE WORK AND GREATER SPEED OF CONSTRUCTION. THESE IMPROVEMENTS ARE DISCUSSED UNDER THE FOLLOWING SUBJECTS; (1) PROPORTIONS OF SOIL AND EMULSIFIED ASPHALT; (2) MIXING SOIL AND EMULSIFIED ASPHALT; (3) ROLLING; (4) DRYING; AND (5) STABILIZATION OF SAND WITH EMULSIFIED ASPHALT. THE MOST OUTSTANDING IMPROVEMENT WAS THAT OBTAINED BY ALLOWING THE SOIL-EMULSION MIXTURE TO DRY IN THIN LAYERS OF APPROXIMATELY 2 IN. THICKNESS. BASED ON A DEHYDRATION VALUE OF 25 PER CENT OF THE COMPACTION MOISTURE AS BEING NECESSARY FOR EFFECTIVE STABILIZATION A 2-IN. LAYER ATTAINED THIS VALUE IN 6 DAYS, WHEREAS A 4-IN LAYER REQUIRED 17 DAYS AND A 6-IN LAYER NEEDED 34 DAYS WITH THE DRYING ENVIRONMENT A CONSTANT. THE GREATER EASE OF CONSTRUCTION, COUPLED WITH THE MORE EFFECTIVE DRYING IN THIN LAYERS, HAS BEEN SO SUCCESSFUL SINCE ITS ADOPTION THAT IT HAS PRACTICALLY DISPLACED ALL OTHER CONSTRUCTION METHODS. /AUTHOR/

  • Supplemental Notes:
    • Vol 20, pp 856-864, 4 TAB
  • Authors:
    • Mckesson, C L
  • Publication Date: 1941

Media Info

  • Monograph Title: Proceedings of the Twentieth Annual Meeting of the Highway Research Board Held at Washington, D.C. December 3-6, 1940
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00233061
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Aug 23 1971 12:00AM