00730239

Component

https://doi.org/10.3141/1535-14

http://scholar.google.com...ones&publication_year=1996

Zeta potentials in water have been measured for a poorly performing, easily stripped hard limestone, a well-performing hard limestone, a sandstone, a rhyolite, soda lime glass beads, and eight AC-20 asphalt binders. Four of the binders selected to represent a range of zeta potentials were combined with the sandstone, the limestones, and the glass beads according to Oklahoma Department of Transportation mix formulas and tested for retained strength. The good hard limestone was the best overall performer with retained strengths of 96 to 100%, the poor hard limestone was acceptable, overall the sandstone was unsatisfactory, and the glass beads did not survive the retained strength preconditioning procedure. The aggregates were then treated with organosilane derivatives to chemically modify their surfaces and to change the aggregate zeta potential. For example, the zeta potential of the poor hard limestone was made to be closer to that of the good hard limestone. The modified aggregates were then used in the same mix and the retained strengths measured. The good hard limestone mix exhibited no change in retained strength; however, the poor hard limestone, the sandstone, and the glass bead mixes gave excellent retained strengths.

This paper appears in Transportation Research Record No. 1535, Characteristics of Asphalt Binders.

English

p. 111-116

1996

Transportation Research Record

0309059100

Figures (9) ; References (16) ; Tables (3)

Aggregates; Asphalt; Bituminous binders; Electric potential; Electrokinetics; Glass beads; Limestone; Sandstones; Strength of materials

Asphalt-aggregate interface; Zeta potential

Geotechnology; Highways; Materials; I31: Bituminous Binders and Materials; I36: Aggregates

TRIS, TRB

Dec 13 1997 12:00AM

• CHARACTERISTICS OF POLYMERS AND POLYMER-MODIFIED BINDERS
• CHARACTERIZATION OF FRACTURE IN ASPHALTIC MIXES BASED ON A MOLECULAR APPROACH
• DIFFERENTIAL SCANNING CALORIMETRY STUDY OF ASPHALT CRYSTALLINITY
• DYNAMIC MATERIAL FUNCTIONS AND THE STRUCTURE OF ASPHALTS
• EFFECT OF ASPHALT FILM THICKNESS ON SHORT- AND LONG-TERM AGING OF ASPHALT PAVING MIXTURES
• INFLUENCE OF AIR-BLOWING ON THE PERFORMANCE-RELATED PROPERTIES OF PAVING ASPHALT
• LABORATORY AGING AND ANNEALING OF ASPHALT BINDERS BY MICROWAVE RADIATION
• MICROSTRUCTURE, MORPHOLOGY, AND FAILURE MODES OF POLYMER-MODIFIED ASPHALTS
• MODELING OF OXIDATIVE AGING BEHAVIOR OF ASPHALTS FROM SHORT-TERM, HIGH-TEMPERATURE DATA AS A STEP TOWARD PREDICTION OF PAVEMENT AGING
• PERMEABILITY OF ASPHALT SURFACE SEALS AND THEIR EFFECT ON AGING OF UNDERLYING ASPHALT CONCRETE
• POLYMER-MODIFIED ASPHALT CEMENTS USED IN THE ROAD CONSTRUCTION INDUSTRY: BASIC PRINCIPLES
• RELATIONSHIPS BETWEEN MOLECULAR WEIGHTS AND RHEOLOGICAL PROPERTIES OF ASPHALTS
• RHEOLOGY OF ASPHALTIC BINDERS AND THEIR EFFECTS ON ASPHALT CONCRETE
• USE OF LIME IN RECYCLING ASPHALT
• ZERO-SHEAR VISCOSITY OF BITUMINOUS BINDER AND ITS RELATION TO BITUMINOUS MIXTURE'S RUTTING RESISTANCE