BINDER PROPERTIES AND THE TEXTURE OF ASPHALTIC SURFACINGS
THREE FULL-SCALE EXPERIMENTS SHOW THAT, UNDER HEAVY TRAFFIC, THE TYPE OF BINDER HAS AN IMPORTANT EFFECT ON THE RESISTANCE TO SKIDDING OF ROLLED ASPHALT; A SIMILAR EFFECT WAS FOUND FOR ASPHALTIC CONCRETE. THE VALUES OF SFC 50 OF SURFACINGS MADE WITH BINDERS WHICH WEATHERED MOST WERE 0.1 HIGHER THAN THOSE PROVIDED BY SURFACINGS MADE WITH BINDERS WHICH WEATHERED LEAST. THE BINDER ACTS BY PROMOTING A GRADUAL WEAR OF THE SAND/FILLER/BINDER MORTAR OF A ROLLED ASPHALT; THE WEAR IS BROUGHT ABOUT BY WEATHER AND TRAFFIC AND EXPOSES UNPOLISHED AGGREGATE AND MAINTAINS A ROUGH MICRO-TEXTURE OF THE MORTAR ITSELF. IN ONE EXPERIMENT THE ASPHALTS WHICH WERE TO GIVE THE GREATEST DEPTH OF TEXTURE ALSO GAVE THE HIGHEST VALUES OF SFC 50 (SIDEWAY-FORCE COEFFICIENT AT 50 KM/HR). THE RANKING OF THE BINDERS PROVIDED BY THE EXPERIMENTS IS BEING USED TO ASSESS THE VALUE OF LABORATORY TESTS TO PREDICT THIS ASPECT OF PERFORMANCE. /APT/
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Authors:
- PLEASE, A
- Lamb, D R
- Conference:
- Publication Date: 1971
Media Info
- Pagination: p. 324-57
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Serial:
- Volume: 40
Subject/Index Terms
- TRT Terms: Asphalt; Binders; Durability; Skid resistance; Texture
- Subject Areas: Highways; Materials;
Filing Info
- Accession Number: 00211733
- Record Type: Publication
- Files: TRIS
- Created Date: Jun 5 1972 12:00AM