THE EFFECTS OF PUGMILL STRUCTURE AND ASPHALT SPRAYING MECHANISM ON THE MIXING AND PROPERTIES OF THE MIXTURE

A NATIONAL EXPERIMENTAL STUDY IS BEING CONDUCTED BY THE BUREAU OF PUBLIC ROADS TO TRY TO SETTLE ON UNIFORMITY OF MIXING VOLUME AND MIXING TIME REQUIREMENTS IN CEMENT CONCRETE PAVING WORK. A BRIEF REVIEW IS PRESENTED OF THE FOLLOWING TYPES OF MIXERS: THE BATCH MIXER, CONTINUOUS MIXERS, IMPACT MIXERS AND ROTARY DRUM TYPE MIXERS. MORE AND BIGGER BATCHES PER HOUR, AFTER ALL OF THE LOST MOTION IN BATCHING IS ABSORBED, MEANS STRETCHING MIXER EFFICIENCY AND TRIMMING THE TOTAL DRY AND WET MIXING TIME. MIXING TIME IS THE ONLY RELIABLE MEASURE OF MIX CONTROL AVAILABLE. IF A METHOD IS NATIONALLY ESTABLISHED OF RATING EFFECTIVENESS OF MIXING, THE MIXING TIME REQUIREMENTS COULD BE ELIMINATED. REGARDLESS OF THE TYPE OF MIXER USED, THE MIXING ITSELF IS DONE IN A TWIN-SHAFT PUG MILL.

• Record URL:
  • https://onlinepubs.trb.org/Onlinepubs/sr/sr54/54-005.pdf
• Supplemental Notes:
  • pp 19-20
• Corporate Authors:

  Highway Research Board (HRB)

  Washington, DC   
• Authors:
  • Tribble, J F
• Conference:
  • 38th Annual Meeting of the Highway Research Board
  • Location: Washington DC, United States
  • Date: 1959-1-5 to 1959-1-9
• Publication Date: 1960

Media Info

• Media Type: Digital/other
• Monograph Title: Temperature in bituminous mixtures
• Serial:
  • Highway Research Board Special Report
  • Issue Number: 54
  • Publisher: Highway Research Board

Subject/Index Terms

• TRT Terms: Asphalt cement; Asphalt pavements; Control; Mixers; Mixing; Mixing plants; Pug mills; Sprayers; Standardization; Time; Volume
• Uncontrolled Terms: Spraying
• Old TRIS Terms: Bituminous mixing plants; Continuous mixers; Mixing procedures; Mixing time; Rotary mixing equipment
• Subject Areas: Highways; Materials;

Filing Info

• Accession Number: 00211421
• Record Type: Publication
• Files: TRIS, TRB
• Created Date: Aug 25 1994 12:00AM