STATISTICAL STUDY OF EFFECT OF HOT STORAGE ON THE COMPOSITION AND PROPERTIES OF ASPHALTIC CONCRETE WITH DISCUSSION

WHILE MOST TESTING INVOLVES EVALUATING MATERIALS TO DETERMINE THAT THE SAMPLE PROPERTIES CONFORM TO THE SPECIFICATION REQUIREMENT WITHIN ESTABLISHED TOLERANCES, OCCASIONS ARISE WHERE A STUDY OF VARIABLES AS AFFECTED BY A PROCESS IS REQUIRED TO EVALUATE ITS RESULTS. DURING THE PAST FIVE YEARS, A NUMBER OF INVESTIGATIONS HAVE BEEN MADE TO EVALUATE HOT STORAGE SILOS AS A PROCESS FOR FURNISHING PAVING MIXTURES. IN THE EARLY PART OF 1971 SUCH AN INVESTIGATION WAS CONDUCTED FOR CMI SYSTEMS. IN THIS INVESTIGATION, THREE DIFFERENT MIXES MANUFACTURED BY TWO PLANTS WERE SAMPLED PRIOR TO AND AFTER STORAGE TO EVALUATE THE EFFECT OF THE STORAGE PROCESS ON THE COMPOSITION AND PROPERTIES OF THE MIXTURES. THE TEST DATA WERE ANALYZED STATISTICALLY USING THE NULL HYPOTHESIS PROCEDURE BY APPLYING THE "STUDENT'S" T DISTRIBUTION TO DETERMINE ACCEPTANCE OR REJECTION OF THE HYPOTHESIS. THIS PAPER REPORTS ON ONLY ONE SERIES OF THESE TESTS TO ILLUSTRATE THE APPLICATION OF STATISTICS TO A PROCESS INVESTIGATION. WHILE THIS STUDY WAS MADE ON THE HOT STORAGE PROCESS, THE PRINCIPLES COULD BE USED TO EVALUATE OTHER PROCESSES IN THE FIELD OF ASPHALT PAVING TECHNOLOGY, SUCH AS A STUDY OF PLANT BATCHING AND TEMPERATURE CONTROLS, ELECTRONIC PAVER CONTROLS, COLD FEED PROPORTIONING, AND PAVEMENT COMPACTION EQUIPMENT. A DISCUSSION IS INCLUDED WHICH DEALS WITH VARIOUS QUESTIONS CONCERNING THIS STUDY. /AUTHOR/

• Supplemental Notes:
  • APP
• Authors:
  • Parr, W K
  • Brock, J D
• Conference:
  • Association of Asphalt Paving Technologists Proc
• Publication Date: 1972

Media Info

• Features: References; Tables;
• Pagination: p. 1-20
• Serial:
  • Volume: 41

Subject/Index Terms

• TRT Terms: Asphalt; Asphalt concrete; Hot mix asphalt; Laboratory tests; Materials selection; Mix design; Properties of materials; Statistical analysis; Storage facilities
• Old TRIS Terms: Asphalt storage; Hot storage
• Subject Areas: Data and Information Technology; Highways; Materials; Terminals and Facilities;

Filing Info

• Accession Number: 00211816
• Record Type: Publication
• Files: TRIS
• Created Date: Sep 17 2002 12:00AM