INFLUENCE OF COARSE AGGREGATE GRADING FOR ASPHALTIC CONCRETE MIXES

DIFFERENT GRADINGS HAVE BEEN SELECTED TO DETERMINE THE FEASIBILITY OF DESIGNING MIXES WITH A COARSE AGGREGATE GRADED IN ANY MANNER. GRADING OF COARSE AGGREGATE IS OF SECONDARY IMPORTANCE, PROVIDED, WELL-GRADED SAND IS USED AND SUFFICIENT PERCENTAGE OF COARSE AGGREGATE IS PRESENT IN THE BITUMINOUS MIX. THE PERCENTAGE OF COARSE AGGREGATE REQUIRED DEPENDS UPON THE TYPE OF AGGREGATE. IT IS MORE IN CASE OF GRAVEL MIXES AND LESS WITH CRUSHED AGGREGATE MIXES. GRAVEL MIX ALSO NEEDS LESSER OPTIMUM BITUMEN CONTENT THAN THE CORRESPONDING CRUSHED AGGREGATE MIX. THE ONLY DISADVANTAGE IS THAT THIS TYPE OF MIX NEEDS HIGHER OPTIMUM BITUMEN CONTENT AS COMPARED TO DENSE OR COARSE GRADED MIXES. THE EFFECT OF FLAKY PARTICLES ON STABILITY AND BITUMEN CONTENT IS NOT SIGNIFICANT IN CASE OF DENSE GRADED MIXES AS COMPARED TO COARSE GRADED MIXES. /AUTHOR/

  • Availability:
  • Supplemental Notes:
    • No 242, pp 17-25
  • Authors:
    • Rao, M V
    • Sharma, R P
  • Publication Date: 1970-6

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Filing Info

  • Accession Number: 00211569
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Feb 8 1971 12:00AM