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THE LOS ANGELES ABRASION MACHINE FOR DETERMINING THE QUALITY OF COARSE AGGREGATE

DISSATISFACTION WITH THE STANDARD DEVAL ABRASION TEST FOR DETERMINING THE QUALITY OF COARSE AGGREGATE LED TO THE INVESTIGATION OF THE LOS ANGELES ABRASION TEST PROPOSED BY THE CALIFORNIA DIVISION OF HIGHWAYS. SEVERAL FEATURES OF THE TEST METHOD WERE CHANGED TO PROMOTE MORE UNIFORM RESULTS AND TO ADAPT THE METHOD TO THE TESTING OF MATERIALS USED IN LOW- COST ROAD CONSTRUCTION. AS NOW PRESENTED, THE METHOD IS BELIEVED SUITABLE FOR USE IN DETERMINING THE QUALITY OF PRACTICALLY ALL COARSE AGGREGATES USED IN ROAD CONSTRUCTION. SERVICE RECORDS FOR MATERIALS FROM 44 DIFFERENT SOURCES ARE COMPARED WITH THE RESULTS OF DEVAL AND LOS ANGELES ABRASION TESTS ON SAMPLES FROM EACH SOURCE. A DEFINITE AGREEMENT SEEMS TO EXIST BETWEEN THE RESULTS OF THE LOS ANGELES TEST AND THE SERVICE RECORD. THE RESULTS OF THE DEVAL TEST SHOW NO AGREEMENT WITH THE SERVICE RECORD, AND IN A NUMBER OF CASES INDICATE MATERIAL TO BE SATISFACTORY QUALITY WHILE THE SERVICE RECORD FINDS THE MATERIAL TO BE QUESTIONABLE OR UNSUITABLE FOR USE. BASED ON THE TESTS REPORTED, THE AUTHORS FIND THE LOS ANGELES ABRASION TEST TO BE BETTER SUITED FOR DETERMINING THE QUALITY OF COARSE AGGREGATE THAN THE STANDARD DEVAL ABRASION TEST. A PERCENTAGE OF WEAR OF 40 IN THE LOS ANGELES TEST IS SUGGESTED AS A SUITABLE SPECIFICATION LIMIT FOR AGGREGATE FOR USE IN SURFACE TREATMENT WORK. /AUTHOR/

  • Supplemental Notes:
    • Vol 35, ParT 2, PP 511-532, 8 FIG, 9 TAB
  • Authors:
    • Woolf, D O
    • Runner, D
  • Publication Date: 1935

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  • Accession Number: 00217602
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jul 8 1994 12:00AM