BEHAVIOR OF AGGREGATE IN THE WASHINGTON DEGRADATION TEST

The variations of the Washington degradation test values with particle sizes and times of agitation were studied on some samples of aggregate. The sand equivalent measuring technique was modified to read fines produced. The study has established that the Washington degradation test is a clay leaching test dependent on surface area of charge. Surface attrition also occurs. A mathematical model is proposed which agrees with the samples considered.

• Corporate Authors:

  American Society for Testing and Materials (ASTM)

  100 Barr Harbor Drive, P.O. Box C700
  West Conshohocken, PA  United States  19428-2957
• Authors:
  • Goonewardane, K
• Publication Date: 1977-1

Media Info

• Features: References;
• Pagination: p. 16-25
• Serial:
  • ASTM Journal of Testing and Evaluation
  • Volume: 5
  • Issue Number: 1
  • Publisher: Federal Highway Administration

Subject/Index Terms

• TRT Terms: Aggregates; Clay; Concrete aggregates; Fines (Materials); Grain size (Geology); Leaching; Materials tests; Mathematical models; Mixing; Road materials; Sand equivalent test; Silica sands; Surfaces; Testing; Turnover
• Uncontrolled Terms: Aggregate testing; Attrition; Surface area
• Old TRIS Terms: Aggregate characteristics; Degradation (Aggregate); Sand, silica
• Subject Areas: Geotechnology; Highways;

Filing Info

• Accession Number: 00156415
• Record Type: Publication
• Source Agency: Engineering Index
• Files: TRIS
• Created Date: Oct 29 1977 12:00AM