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THE PLACE OR POINT AND CONDITIONS OF ACCEPTANCE OF CONSTRUCTION AGGREGATES

THE PROBLEM OF THE ACCEPTANCE OF CONSTRUCTION AGGREGATES IS REVIEWED. PRODUCERS TAKE GREAT CARE TO MAINTAIN SEGREGATION OF AGGREGATES AT THEIR PLANT. ASSUMING THAT THE CONTRACTOR IS HANDLING THE TRANSPORTATION, THE QUARRY PRODUCERS' RESPONSIBILITY SHOULD END ONCE THE AGGREGATE IS PROPERLY LOADED FOR SHIPMENT FROM APPROVED PILES AND THE INSPECTION TICKET ISSUED AT THE QUARRY. CONTRACTORS MUST TAKE CARE TO AVOID SEGREGATION, DEGRADATION, AND CONTAMINATION AT THEIR PLANTS. CHANGES IN GRADATION CAN ALSO OCCUR WHEN AGGREGATES ARE ROLLED IN TO GRADE. DESPITE THE HIGH QUALITY OF AGGREGATE AS SHOWN BY THE LOS ANGELES ABRASION AND SOUNDNESS TEST MADE ON SAMPLES TAKEN AT THE SOURCE OF PRODUCTION, RESULTS OBTAINED ON SAMPLES FROM A STOCKPILE IN A COMMERCIAL PLANT YARD INDICATED AN AVERAGE OF OVER 9% PASSING THE SIEVE, RATHER THAN LESS THAN 3% AS SPECIFIED. SPECIFICATION REQUIREMENTS RELATIVE TO MATERIALS ARE GENERALLY TO BE CONSIDERED AS APPLYING TO THE MATERIALS IMMEDIATELY BEFORE THEY ARE MIXED WITH OTHER MATERIALS OR SO PROCESSED THAT THEIR CHARACTERISTICS ARE CHANGED. THE AASHO GUIDE SPECIFICATIONS FOR HIGHWAY CONSTRUCTION PROVIDES FOR THE ACCEPTANCE OF MATERIALS ON THE BASIS OF SAMPLES TAKEN AND TESTED DURING THE PRODUCTION, DELIVERY, AND IMMEDIATELY PRIOR TO INCORPORATION AND THE WORK. IT ALSO PROVIDES FOR ACCEPTANCE OF MATERIALS ON THE BASIS OF REASONABLY CLOSE UNIFORMITY.

  • Supplemental Notes:
    • Vol 5, No 16, P 16-17, 42, 43-45, 47-49
  • Publication Date: 1968

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  • Accession Number: 00217840
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Oct 5 1970 12:00AM