MODIFICATION OF ENGINEERING BEHAVIOUR OF THERMAL CEMENT BLENDS CONTAINING SILICA FUME AND SILICA FLOUR BY REPLACING FLOUR WITH SILICA SAND

Replacement of silica flour with coarser particles of sand in cement blends containing silica fume affected the compressive strength and permeability of hardened mixes at ambient and hydrothermal conditions. At ambient conditions the major effect was a marked increase in water permeability due to larger and/or better interconnected pores. Early compressive strength also increased. After 7 days of hydrothermal treatment at 230 deg c and 2.75 mpa, strength increased markedly. Values were practically independent of period of precuring for two proportions of fume to sand used in this work. Higher strength values resulted for mixes with higher fume:sand ratio. Water permeability was not significantly affected, however, the lowest values were obtained for blends with fume:sand ratio of 3:1. Replacement of silica flour by sand was beneficial particularly in regard to the compressive strength of hydrothermally treated cement-silica blends.(a)

• 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:
  • Grabowski, E
  • Gillatt, J E
• Publication Date: 1989-7

Language

• English

Media Info

• Pagination: p. 499-508
• Serial:
  • Cement and Concrete Research
  • Volume: 19
  • Issue Number: 4
  • Publisher: Elsevier
  • ISSN: 0008-8846
  • Serial URL: http://www.sciencedirect.com/science/journal/00088846

Subject/Index Terms

• TRT Terms: Aggregates; Compression; Concrete; Mix design; Oxides; Permeability; Porosity; Silicon; Strength of materials
• Uncontrolled Terms: Increase
• Subject Areas: Geotechnology;

Filing Info

• Accession Number: 00498626
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Files: ITRD, TRIS
• Created Date: Sep 30 1990 12:00AM