THE PRESENT STATE OF THE ADHESION PROBLEM IN BITUMINOUS ROAD CONSTRUCTION

ADHESION MAY BE DEFINED AS THE RESISTANCE TO SEPARATION OF TWO ADJOINING MATERIALS. THIS ADHESION MAY BE DUE TO NON- SPECIFIC FACTORS SUCH AS MECHANICAL FACTORS, SPECIFIC SURFACE-PHYSICAL OR CHEMICAL PHENOMENA. A SURVEY OF THE SUBSTANCES WHICH ARE IMPORTANT EITHER AS COMPONENTS OR AS NATURAL ENEMIES OF MINERAL-BITUMEN SYSTEMS, MAKES IT EVIDENT THAT PURELY PHYSICAL ABSORPTION CAN PLAY ONLY A NEGLIGIBLE ROLE IN THE ADHESION PROBLEM AND THAT PRIMARY ATTENTION SHOULD BE PAID TO ORIENTATION AND REACTION PHENOMENA. REACTION PHENOMENA (POLAR ABSORPTION AND COMPOUND FORMATION) TAKE PLACE WITH CONSIDERABLE MORE ENERGY THAN PHYSICAL ADSORPTION. THE POSSIBILITIES AND TYPES OF POLAR ADHESION AND COMPOUND FORMATION MUST BE LOOKED FOR ON THE BASIS OF THE CHEMICAL COMPOSITIONS OF THE BINDER AND OF THE MINERAL SURFACE. HISTORICAL REVIEWS ARE PRESENTED ON STUDIES OF THE ADHESION PHENOMENA AND TESTS FOR DETERMINING ADHESIVENESS. WITH THE GRADUAL RECOGNITION OF THE FACTORS DETERMINING THE ADHESION OF BITUMINOUS FILMS TO MINERAL MATERIALS, ATTEMPTS FOR THE IMPROVEMENT OF THE BITUMINOUS BINDERS HAVE ADVANCED WITH THOSE FOR THE IMPROVEMENT OF THE SURFACE PROPERTIES OF THE AGGREGATES. THE SURVEY INDICATES THAT ENOUGH SCIENTIFIC AND PRACTICAL DATA HAVE BEEN ACCUMULATED TO ENABLE THE ENGINEER TO DESIGN GOOD PAVEMENTS WITH THE BITUMINOUS BINDERS.

  • Supplemental Notes:
    • Proc, pp 190-214, 60 REF
  • Corporate Authors:

    Montana State Highway Commission

    Montana National Bituminous Concrete
    ,   United States 
  • Authors:
    • Winterkorn, H F
  • Publication Date: 1937-9-7

Subject/Index Terms

Filing Info

  • Accession Number: 00210926
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jul 27 1970 12:00AM