SYMPOSIUM-ASPHALT PAVING FOR THE 70'S /WITH DISCUSSION/

FOUR SELECTED TOPICS WERE SELECTED FOR EXAMINATION IN DETAIL: SPECIFICATIONS, EQUIPMENT, MATERIALS, AND COMPACTION. CHANGES IN SPECIFICATIONS ARE ANTICIPATED IN RESPONSE TO DEVELOPMENTS IN CONSTRUCTION EQUIPMENT AND OPERATIONS, IN MATERIALS, AND IN QUALITY CONTROL PROCEDURES. A SHIFT IN RESPONSIBILITY FOR QUALITY CONTROL OF MATERIALS FROM THE STATE HIGHWAY DEPARTMENT TO THE CONTRACTOR IS FORESEEN. THREE FACTORS ARE SEEN AS INFLUENCING EQUIPMENT DEVELOPMENT: DEMANDS FOR INCREASED PRODUCTIVITY, REQUIREMENTS FOR PRESERVATION AND IMPROVEMENT OF THE ENVIRONMENT, AND QUALITY CONTROL PROGRAMS. EQUIPMENT INVOLVED IN THE MOVEMENT OF ASPHALT MATERIALS FROM MIXING PLANT TO SPREADER IS CONSIDERED IN SOME DETAIL. DISTRIBUTION PROBLEMS ASSOCIATED WITH LOCAL SHORTAGES OF HIGH QUALITY AGGREGATES MAY BE MET BY SOME COMBINATION OF THE FOLLOWING ALTERNATIVES: EXPANDED USE OF MARGINAL MATERIALS AND MANUFACTURED AGGREGATES, NEW CONSTRUCTION METHODS, REDUCED DEMAND FOR THESE MATERIALS AS RAPID TRANSIT SYSTEMS EXPAND, AND IMPROVED HANDLING, PROCESSING, AND TRANSPORTATION METHODS. CONSIDERATIONS UNDER THE TOPIC OF COMPACTION INCLUDE: MIX WORKABILITY, THICK LIFT COMPACTION, THIN-LIFT COMPACTION, FULL WIDTH COMPACTION, ROLLING PROCEDURES, DENSITY REQUIREMENTS, AND AUTOMATIC COMPACTION CONTROL.

• Authors:
  • Marker, V
  • Beaty, R W
  • Gallaway, R M
  • Van, TIL CJ
  • Wester, K
  • Mcleod, N W
• Conference:
  • Association of Asphalt Paving Technologists Proc
• Publication Date: 1971

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 248-323
• Serial:
  • Volume: 40

Subject/Index Terms

• TRT Terms: Compaction; Flexible pavements; Materials; Pavers; Paving; Specifications; Trend (Statistics)
• Subject Areas: Highways; Materials; Pavements;

Filing Info

• Accession Number: 00206016
• Record Type: Publication
• Files: TRIS
• Created Date: Oct 15 1972 12:00AM