AGGREGATE QUALITY AS RELATED TO FLEXIBLE PAVEMENT PERFORMANCE

This research study has been concerned with the evaluation of low quality aggregate for use in paving mixtures. The mixture evaluation was carried out using environmental simulation, moduli response, indirect tensile strength and structural simulation of pavement responses. The research findings indicate that pavement mixtures using low quality aggregate are susceptible to environment-induced damage. The use of these mixtures in the pavement surface course, which is exposed to the combined effects of environment and loading, is not fully justified. The review of data indicates that both coarse aggregate and fine aggregate are equally responsible for mixture durability. The use of low quality sand might, in fact, have en equally detrimental effect when compared to the effect of coarse aggregate. For mixtures in which low quality sand was replaced with limestone sand, the mixture performance exhibits a two-fold improvement. The use of sulfur as a mixture additive similarly improved mixture performance. The simulation of pavement performance indicates that two inches of a 301 mixture prepared with locally available aggregate is equivalent to one inch of asphaltic base course 301 prepared with a limestone material from Franklin County. /Author/

• Supplemental Notes:
  • Sponsored by the Ohio Department of Transportation. Prepared in cooperation with the Department of Transportation, Federal Highway Administration.
• Corporate Authors:

  Ohio State University, Columbus

  Transplex, 2070 Neil Avenue
  Columbus, OH  United States  43210
• Authors:
  • Majidzadeh, K
• Publication Date: 1976-9

Media Info

• Pagination: n.p.

Subject/Index Terms

• TRT Terms: Aggregate mixtures; Aggregates; Asphalt; Coarse aggregates; Durability; Environmental impacts; Fine aggregates; Flexible pavements; Limestone; Loads; Modulus of elasticity; Pavement performance; Quality control; Sand; Simulation; Sulfur; Tensile strength
• Uncontrolled Terms: Aggregate analysis; Loading; Quality
• Subject Areas: Environment; Geotechnology; Highways;

Filing Info

• Accession Number: 00172027
• Record Type: Publication
• Source Agency: Federal Highway Administration
• Report/Paper Numbers: FHWA-77-S0663 Final Rpt., FCP 45C3282
• Contract Numbers: St Job No 14291(0)
• Files: TRIS, ATRI, USDOT
• Created Date: Mar 29 1978 12:00AM