DIMENSIONS OF THE AVERAGE PORE, THE NUMBER OF PORES, AND THE SURFACE AREA OF HEADENED PORTLAND CEMENT PASTE

In the course of their small angle x-ray scattering work, Winslow and Diamond also calculated that radius of gyration of the pores. Using its value for a paste, Diamond adopted two models for the average pore: a sphere and a cylinder of equal height and diameter. This model leads to absurd values for the surface area of the paste. Using a cylindrical model, and the radius of gyration plus the hydraulic radius, the present authors calculated for a similar paste the dimensions of the average pore and obtained the values: diameter equals 47.2A, length equals 466A. The number of pores per gram of paste was 2.26 x 10 to the 17th power. The paper also discusses the surface area of hardened paste, and points out the extremely important contributions of Winslow and Diamond to the subject. /Author/

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00088846
• Corporate Authors:

  Pergamon Press, Incorporated

  Maxwell House, Fairview Park
  Elmsford, NY  United States  10523
• Authors:
  • Mikhail, R S
  • Turk, D H
  • Brunauer, S
• Publication Date: 1975-9

Media Info

• Pagination: p. 433-442
• Serial:
  • Cement and Concrete Research
  • Volume: 5
  • Issue Number: 5
  • Publisher: Elsevier
  • ISSN: 0008-8846
  • Serial URL: http://www.sciencedirect.com/science/journal/00088846

Subject/Index Terms

• TRT Terms: Cement paste; Dimensional analysis; Mathematical models; Pores; Porosity; Surfaces; X ray analysis
• Uncontrolled Terms: Cylinders; Models; Pores; Surface area
• Old TRIS Terms: Dimensional measurement; Gyration
• Subject Areas: Highways; Materials;

Filing Info

• Accession Number: 00125784
• Record Type: Publication
• Files: TRIS
• Created Date: Dec 16 1975 12:00AM