HYDRATION OF MIXTURES OF 'CIMENT FONDU' ALUMINOUS CEMENT AND GRANULATED BLAST FURNACE SLAG

High alumina cement (HAC) concrete made from a mixture (by mass) of 1:1 Ciment Fondu and granulated blast furnace slag (gbfs) has shown an increasing trend in strength when kept under water over a period of one year at 20 and 30 degrees C. Over the same period concretes made from neat Ciment Fondu have experienced a sharp fall in strength at 38 degrees C. Work on pastes made from the 1:1 mixture at similar temperatures suggests that its superior performance at the higher temperature when compared to that of neat HAC is due to the formation of C2ASH8 in the 1:1 mixture at the expense of C3AH6 in the HAC alone. These changes in the hydration chemistry of HAC in the presence of slag lead to a reduction of porosity with time in the hydrated material and its strength increases. Some of the properties relevant to the workability of concrete made from the 1:1 HAC + slag mixture have been determined. The hydration chemistry of the blended cement has been studied at 4 degrees, 20 degrees and 40 degrees C by conduction calorimetry and x-ray diffraction.(A)

  • Availability:
  • Corporate Authors:

    Pergamon Press, Incorporated

    Maxwell House, Fairview Park
    Elmsford, NY  United States  10523
  • Authors:
    • Majumdar, A J
    • SINGH, B
    • Edmonds, R N
  • Publication Date: 1990-3

Language

  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00605921
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Mar 31 1991 12:00AM