AN EVALUATION OF SEVERAL EXPANDED AGGREGATES FOR USE IN SKID-RESISTANT PAVEMENT SURFACES

THE TYPES OF AGGREGATE USED IN EITHER PORTLAND CEMENT CONCRETE OR BITUMINOUS PAVEMENTS HAVE A LARGE EFFECT ON THE SKID RESISTANT PROPERTIES OF THE PAVEMENT SURFACE. SEVERAL LIGHTWEIGHT EXPANDED AGGREGATES HAVE BEEN INVESTIGATED TO DETERMINE THEIR EFFECT ON SKID RESISTANCE. LABORATORY AND FIELD EXPERIMENTS PERFORMED ON LIGHTWEIGHT EXPANDED SHALE SURFACES INDICATED LARGE INCREASES IN THE SKID RESISTANCE OVER SURFACES CONSTRUCTED OF LIMESTONE AGGREGATES. THE INCREASE IN SKID RESISTANCE WAS ALMOST DIRECTLY PROPORTIONAL TO THE AMOUNT OF EXPANDED SHALE AGGREGATE USED IN THE SURFACE. PRELIMINARY COST INFORMATION IMPLIES THAT VIRTUALLY NO ADDITIONAL COST IS INCURRED IN THE USE OF THE EXPANDED SHALE MIX AS OPPOSED TO THE REGULAR PAVING MIX USED IN TENNESSEE. AVAILABLE DATA ARE INSUFFICIENT TO EVALUATE THE COMPARATIVE DURABILITY OF THE EXPANDED SHALE MIX. HOWEVER, AFTER NEARLY TWO YEARS OF SERVICE NO DEFECTS IN THE INTEGRITY OF AN EXPERIMENTAL PAVEMENT SURFACE WERE OBSERVED. /JM/

• Supplemental Notes:
  • Vol 1, No 3, PP 609-624, 10 FIG, 2 TAB, 1 APP
• Authors:
  • Whitehurst, E A
  • Moore, A B
• Publication Date: 1966-9

Media Info

• Serial:
  • Journal of Materials
  • Publisher: American Society for Testing and Materials (ASTM)

Subject/Index Terms

• TRT Terms: Bituminous pavements; Concrete pavements; Durability; Expanded shale aggregates; Lightweight aggregates; Pavements; Portland cement concrete; Skid resistance; Skidding
• Subject Areas: Geotechnology; Highways; Pavements; Safety and Human Factors;

Filing Info

• Accession Number: 00217755
• Record Type: Publication
• Files: TRIS
• Created Date: Sep 9 1994 12:00AM