HOT BIN SAMPLING

SPECIFICATIONS AND SPECIFICATION CONTROL SPELL OUT FOR THE CONTRACTOR THE REQUIREMENTS UNDER THE CONTRACT AND GIVE THE OWNER ASSURANCE THAT THESE ARE BEING MET. STUDIES HAVE BEEN MADE ON HOW EXPLICIT OR HOW GENERAL A SPECIFICATION SHOULD BE. IT HAS BEEN SUGGESTED THAT SPECIFICATIONS SHOULD NAME THE END RESULT ONLY AND THE METHOD, EQUIPMENT, AND ITS OPERATION SHOULD BE MENTIONED IN A GENERAL WAY AND ONLY WHERE THE MACHINE CONTROL OR INSTRUMENT HAS A DIRECT RELATION TO THE FINISHED PRODUCT. THE TREND IS IN THE DIRECTION OF MORE TEST PROCEDURES WITH RANDOM SAMPLING TO GET SPECIFICATION COMPLIANCE. IN CONNECTION WITH BITUMINOUS PAVEMENT CONSTRUCTION, HOT BIN SAMPLING IS NOW BEING SUBJECTED TO SCRUTINY AND STUDY. AS AN EXAMPLE, COMMITTEE MC-C2 OF THE HIGHWAY RESEARCH BOARD HAS MADE A STUDY OF THE PRACTICES OF THE VARIOUS STATE HIGHWAY DEPARTMENTS AND OF 42 STATES, 17 ARE USING HOT BIN SAMPLING FOR FINAL ACCEPTANCE, EITHER BY ITSELF OR IN CONNECTION WITH AN EXTRACTION TEST. ONLY 12 STATES HAVE SPECIFICATIONS COVERING SIMPLE DEVICES AND A FEW STATES SHOW THE TYPE OF DEVICE REQUIRED. TO THE QUESTION OF THE NEED FOR MORE UNIFORM STANDARDS FOR HOT BIN SAMPLING FACILITIES, 33 ANSWERED IN THE AFFIRMATIVE. FACTORS AFFECTING HOT BIN SAMPLING AND THE MECHANICAL PROBLEM AS IT RELATES TO BATCH TYPE PLANTS ARE DISCUSSED. /AUTHOR/

• Supplemental Notes:
  • Vol 11, 229-236 PP, 1 TAB, 2 PHOT, 10 REF
• Authors:
  • HANSEN, H I
• Publication Date: 1966-11

Media Info

• Serial:
  • Canadian Technical Asphalt Association, Proceeding
  • Publisher: POLYSCIENCE PUBLICATIONS INC.

Subject/Index Terms

• TRT Terms: Bituminous pavements; Chemical analysis; Contractors; Contracts; Equipment; Human factors; Methodology; Mixing plants; Paving; Randomization; Resource extraction; Specifications; Standards; State highway departments; Studies; Test procedures; Testing
• Uncontrolled Terms: Extraction (Chemistry); Requirement
• Old TRIS Terms: Hot bin
• Subject Areas: Administration and Management; Data and Information Technology; Geotechnology; Highways; Safety and Human Factors;

Filing Info

• Accession Number: 00217533
• Record Type: Publication
• Source Agency: CANADIAN GOOD ROADS ASSOCIATION
• Files: TRIS
• Created Date: Feb 24 1994 12:00AM