DETERMINATION OF THE SURFACE CHARGES OF CERTAIN HIGHWAY AGGREGATES BY STREAMING POTENTIAL MEASUREMENTS

ZETA POTENTIAL (SURFACE CHARGE) DATA WERE OBTAINED ON SEVENTEEN QUARTZ, NINE CARBONATE AND EIGHT SILICATE AGGREGATES USING A STREAMING POTENTIAL APPARATUS DESCRIBED. MEASUREMENTS OF PH WERE MADE ON THE RESULTANT VARIOUS AGGREGATES. THE AGGREGATES WHICH WERE OBTAINED FROM SEVERAL LOCALES IN VIRGINIA WERE SUBJECTED TO PETROGRAPHIC ANALYSIS FOR PURPOSES OF CATEGORIZING THEM. THREE DUPLICATE SETS OF SAMPLES OF EACH AGGREGATE WERE MIXED WITH A CATIONIC ASPHALT EMULSION, A NEUTRAL ASPHALT EMULSION AND A NEUTRAL ASPHALT EMULSION CONTAINING AN ADHESION ADDITIVE. EACH AGGREGATE- EMULSION MIXTURE WAS CONDITIONED AND THEN SUBJECTED TO A STRIPPING TEST INVOLVING A BOILING OF EACH MIXTURE IN WATER FOR AN HOUR. DUPLICATE RESULTS OF THE STRIPPING TEST WERE WITHIN 15% OF EACH OTHER IN 77% OF THE TESTS.

• Supplemental Notes:
  • Hpr-1/2/, 0278, BPR 20
• Corporate Authors:

  Virginia Highway Research Council

  Charlottesville, VA  United States 
• Authors:
  • Sherwood, W C
• Publication Date: 1967-9-20

Subject/Index Terms

• TRT Terms: Additives; Adhesion; Aggregates; Boiling; Carbonates; Cationic emulsified asphalt; Electric potential; Emulsified asphalt; Measurement; Petrography; pH value; Quartz; Silicates; Stripping (Pavements); Testing
• Uncontrolled Terms: Streaming potential (Electricity); Zeta potential
• Subject Areas: Geotechnology; Highways;

Filing Info

• Accession Number: 00217468
• Record Type: Publication
• Source Agency: Bureau of Public Roads /US
• Files: TRIS
• Created Date: Dec 29 1994 12:00AM