CRUSHED GRAVEL COURSE AGGREGATE IN ASPHALTIC CONCRETE

THE BUREAU OF ENGINEERING RESEARCH AND DEVELOPMENT INVESTIGATED THE PERFORMANCE OF PAVEMENTS CONTAINING GRAVEL COARSE AGGREGATES TO ASCERTAIN IF CRUSHED GRAVEL PERFORMED ADEQUATELY IN BITUMINOUS CONCRETE AS COMPARED TO CRUSHED STONE. A PRESENT SERVICEABILITY INDEX WAS USED (I. E. ROUGHNESS, CRACKING AND PATCH, RUTTING) TO COMPARE 25 GRAVEL PAVEMENTS TO A GROUP OF PAVEMENTS DISTRIBUTED OVER THE STATE CONTAINING CRUSHED STONE AGGREGATES. A SURVEY OF LOCAL GOVERNMENT GRAVEL PAVEMENTS WAS PERFORMED AND 31 PENNSYLVANIA PAVEMENTS CONTAINING GRAVEL (FROM NYS PITS) WERE VIEWED AND RATED TO ENHANCE THE STUDY. PAVEMENT SAMPLES WERE TAKEN FROM THE STATE GRAVEL PAVEMENTS TO COMPARE THE PHYSICAL PROPERTIES OF GRAVEL MIXTURES TO THOSE OF CRUSHED STONE. IT WAS FOUND THAT (1) IN GENERAL THE CRUSHED GRAVEL PAVEMENTS WERE PERFORMING ADEQUATELY IN A SIMILAR MANNER AS THE CRUSHED STONE, (2) THE CRUSHED GRAVEL SHOWED SUPERIOR SKID RESISTANCE WHEN COMPARED TO CRUSHED STONE AGGREGATES, AND (3) ON THE BASIS OF MARSHALL TESTING, CRUSHED GRAVEL MIXES HAVE STABILITY VALUES EQUAL TO THOSE OF MIXES IN WHICH CRUSHED STONE IS USED. THESE FINDINGS SHOULD DISPEL DOUBTS ABOUT STABILITY, DURABILITY, SKID RESISTANCE, AND OVERALL PERFORMANCE FOR PAVEMENTS CONTAINING CRUSHED GRAVEL AGGREGATES PREPARED FROM SOURCES IN THE SOUTHERN TIER AND ADIRONDACK HIGHLAND REGIONS OF NEW YORK STATE. /BPR/

• Supplemental Notes:
  • Hpr-1 (4), ITEM NO 17, STATE NO 20
• Corporate Authors:

  New York State Department of Transportation

  1220 Washington Avenue
  Albany, NY  United States  12232

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Thomas, J J
  • Molinaro, T F
  • Clark, W H
• Publication Date: 0

Subject/Index Terms

• TRT Terms: Alternatives analysis; Asphalt concrete; Coarse aggregates; Crushed rock; Data collection; Durability; Gravel; Marshall test; Pavement performance; Pavements; Samples; Serviceability; Skid resistance; Stability (Mechanics); Surveys
• Uncontrolled Terms: Crushed gravel; Serviceability Index
• Old TRIS Terms: Marshall stability marshall stability & flow test flow
• Subject Areas: Design; Highways; Materials; Pavements;

Filing Info

• Accession Number: 00206394
• Record Type: Publication
• Source Agency: Federal Highway Administration
• Files: TRIS, USDOT, STATEDOT
• Created Date: Feb 9 1970 12:00AM