ACCEPTANCE TESTING OF BITUMINOUS AND PORTLAND CEMENT CONCRETE IN THE FIELD

THE SAMPLING AND TESTING OF HIGHWAY MATERIALS IN THE STATE OF VIRGINIA IN THE PAST FIVE YEARS HAS DEVELOPED ALONG THE LINE OF PERFORMING AS MUCH OF THE FINAL ACCEPTANCE SAMPLING AND TESTING AT THE ORIGIN OR SOURCE AS POSSIBLE. EIGHT NEW DISTRICT LABORATORIES HAVE BEEN CONSTRUCTED, WHICH ARE 4 X 80 FEET, TWO STORIES HIGH. THE LABORATORIES WERE EQUIPPED WITH TESTING EQUIPMENT SIMILAR TO THAT USED IN THE CENTRAL LABORATORY FOR TESTING BITUMINOUS CONCRETE. EQUIPMENT WAS ALSO PROVIDED FOR TESTING PORTLAND CEMENT CONCRETE. AT THE SAME TIME, THE INSTALLATION OF A PENALTY AND REJECTION SYSTEM WAS MADE, WHEREBY BORDERLINE MATERIALS COULD BE USED, BUT AT A REDUCED COST. THE INSTALLATION OF THIS SYSTEM HAS REQUIRED THAT THE STATE PROVIDE: (1) MORE INTENSIVE TRAINING FOR THE INSPECTORS AS WELL AS INDUSTRY PERSONNEL, (2) MORE THOROUGH ON-THE-JOB SUPERVISION OF INSPECTORS, (3) MORE FREQUENT AND MORE EXTENSIVE PLANT INSPECTIONS OF BITUMINOUS LABORATORIES, AND (4) MORE DECENTRALIZATION OF LABORATORY TESTING. DEVELOPMENTS IN REGARD TO THESE REQUIREMENTS ARE DESCRIBED AND DISCUSSED. IN ADDITION TO RECORD SAMPLING OF CONCRETE, PROGRESS SAMPLES ARE ALSO OBTAINED OF CEMENT AND FINE AND COARSE AGGREGATES, AT THE RATE OF ONE OF EACH TYPE OR SIZE PER PROJECT, WITH NO LESS THAN ONE SAMPLE FOR EACH 5000 TONS OF AGGREGATE USED. THESE SAMPLES ARE OBTAINED AT THE BATCHING SOURCE OF CONCRETE. VIRGINIA FEELS THAT THIS IS THE MINIMUM AMOUNT OF SAMPLING AND TESTING THAT CAN BE CONDUCTED, AND STILL PROVIDE SOME ASSURANCE OF OBTAINING ACCEPTABLE PRODUCTS.

• Authors:
  • Edwards, J L
• Publication Date: 1967-11

Media Info

• Serial:
  • Southeast Assoc St Hwy Officials

Subject/Index Terms

• TRT Terms: Acceptance sampling; Acceptance tests; Asphalt concrete; Building materials; Concrete mixers; Field tests; Inspection; Mixing plants; Pavements; Paving; Portland cement concrete; Testing equipment; Training
• Old TRIS Terms: Highway pavement
• Subject Areas: Construction; Education and Training; Highways; Pavements;

Filing Info

• Accession Number: 00215191
• Record Type: Publication
• Report/Paper Numbers: pp 109-115
• Files: TRIS
• Created Date: Aug 4 1994 12:00AM