AN EXAMINATION OF POSSIBLE ERRORS IN THE DETERMINATION OF NITROGEN ISOTHERMS ON HYDRATED CEMENTS

A review of the literature on the determination and interpretation of nitrogen isotherms for hydrated portland cement is presented, showing the importance of sample preparation. The technique of nitrogen sorption is described and applied to a colloidal silica standard (tk 800), to a number of hardened cement pastes and to a suspension-hydrated cement. If hydrated cement specimens are soaked in methanol before out-gassing, a large increase in the nitrogen bet surface area is obtained together with an increase in the fine mesopore volume. /Author/TRRL/

  • Corporate Authors:

    Cement and Concrete Association

    Wexham Spring
    Slough SL3 6PL, Buckinghamshire,   England 
  • Authors:
    • Lawrence, C D
  • Publication Date: 1978-6

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00189227
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Report/Paper Numbers: Techn Report 42-520 Monograph
  • Files: ITRD, TRIS
  • Created Date: Apr 12 1979 12:00AM