PHASE TRANSFORMATIONS OF WATER IN HARDENED CEMENT PASTE. A LOW-TEMPERATURE DSC INVESTIGATION

Differential scanning calorimetry (DSC) was used to investigate the properties of gel pore water in hardened cement paste (hcp). By comparing heating and cooling thermograms using a step scanning procedure evidence was found for new phase transitions due to structured water. The new transitions occur at -31 and -24 degrees C during cooling. On drying the transitions vanish near relative humidities of 70% and 88%, respectively. An approximately cylindrical shape was deduced for the gel pores. The sorption hysteresis was also investigated.(A)

  • Availability:
  • Corporate Authors:

    Pergamon Press, Incorporated

    Maxwell House, Fairview Park
    Elmsford, NY  United States  10523
  • Authors:
    • Beddoe, R E
    • Setzer, M J
  • Publication Date: 1990-3

Language

  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00605927
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Mar 31 1991 12:00AM