DETERMINATION OF MEAN PORE RADII IN MINERAL AGGREGATES USING PERMEABILITY MEASUREMENTS

THE RELATION BETWEEN POROSITY AND PERMEABILITY IN POROUS AGGREGATES WAS STUDIED. TAKING DIFFUSION, SLIP FLOW, AND POISEUILLE FLOW INTO ACCOUNT, A THEORETICAL EQUATION WAS OFFERED FOR GAS FLOW THROUGH CAPILLARIES. THE EQUATION WAS USED TO CALCULATE MEAN PORE RADII AND EFFECTIVE PORE AREA FROM PERMEABILITY EXPERIMENTS ON SIX DIFFERENT MINERAL AGGREGATES. PERMEABILITY DATA WERE OBTAINED BY NITROGEN FLOW MEASUREMENTS, AND MEAN PORE RADII FOR COMPARISON WITH CALCULATED RADII WERE DETERMINED BY MERCURY POROSIMETRY. VALUES FOR MEAN PORE RADII THUS DETERMINED ARE GENERALLY IN GOOD AGREEMENT, BUT COMPLICATIONS ARISING FROM DIRECTIONAL INHOMOGENEITIES IN MOST NATURAL AGGREGATES REQUIRE FURTHER STUDY.

• Record URL:
  • http://onlinepubs.trb.org/Onlinepubs/sr/sr90/90-018.pdf
• Supplemental Notes:
  • Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved
• Corporate Authors:

  Highway Research Board (HRB)

  Washington, DC   
• Authors:
  • Huang, Jinn-Hui
  • Sherwood, W C
  • Wakao, Noriaki
• Publication Date: 1966

Media Info

• Media Type: Print
• Features: Appendices; Figures; References; Tables;
• Pagination: pp 219-233
• Monograph Title: Symposium on structure of Portland cement paste and concrete
• Serial:
  • Highway Research Board Special Report
  • Issue Number: 90
  • Publisher: Highway Research Board

Subject/Index Terms

• TRT Terms: Aggregates; Calculation; Equations; Flow measurement; Mean (Statistics); Permeability; Pores; Porosimeters; Porosity; Radius; Studies
• Uncontrolled Terms: Computation; Pores
• Old TRIS Terms: Aggregate characteristics; Mean (Statistical)
• Subject Areas: Geotechnology; Highways; Materials;

Filing Info

• Accession Number: 00212294
• Record Type: Publication
• Files: TRIS, TRB
• Created Date: Feb 24 1994 12:00AM