RAPID ANALYSIS OF FRESH CONCRETE

AN INSTRUMENT HAS BEEN DEVELOPED TO DETERMINE THE CEMENT CONTENT OF UNHARDENED CONCRETE WITHIN FIVE MINUTES--THE MAXIMUM TIME CONSIDERED ECONOMICALLY FEASIBLE FOR DELAYING DISCHARGE FROM A MIXER OR READY-MIX TRUCK. THE BASIS OF THE METHOD IS THE SEPARATION OF CEMENT-FINENESS MATERIAL FROM THE FRESH CONCRETE BY WATER FLOW. THE LARGER PARTICLES REMAIN AND A 10 PERCENT SAMPLE OF THE RESULTING SLURRY IS TAKEN OFF, SIEVED, AND CONDITIONED TO SETTLE OUT THE SOLIDS, LEAVING A SAMPLE OF FIXED VOLUME WHICH IS THEN WEIGHED AND THE WEIGHT COMPARED WITH A CALIBRATION GRAPH TO OBTAIN THE CEMENT CONTENT. /HRIS/

• Corporate Authors:

  Precast Concrete /UK

  ,    
• Publication Date: 1973-4

Media Info

• Pagination: p. 201-2
• Serial:
  • Publication of: Cemento /Italy/
  • Volume: 4
  • Issue Number: 4
  • Publisher: Cemento /Italy

Subject/Index Terms

• TRT Terms: Analysis; Cement content; Concrete; Measuring instruments; Weight
• Old TRIS Terms: Concrete composition
• Subject Areas: Highways; Materials;

Filing Info

• Accession Number: 00214257
• Record Type: Publication
• Files: TRIS
• Created Date: Aug 5 1973 12:00AM