RHEOLOGICAL PROPERTIES OF CEMENT PASTES ADMIXED WITH SOME ALKANOLAMINES

Admixtures are generally used to improve the quality of plastic concrete, such as increased workability or water reduction and quality of the finished product. Triethanolamine (TEA) is used as a grinding aid in cement manufacture and as a constituent in certain admixture formulations. This article reports on a study of the effects of monoethanolamine (MEA), triethanolamine (TEA) and polytriethanolamine (PTEA) on the rheological properties of fresh cement pastes made of sulfate resisting cement (SRC) and ordinary Portland cement (OPC). Cement pastes made with and without these alkanolamines were prepared at a water/cement (w/c) ratio of 0.40. The authors conclude that the effect of ethanolamines additions on the rheological properties of fresh cement pastes depends on three factors: the addition rate, the applied shear rate, and the cement type. The alkanolamines were found to possess a significant retarding effect on the hydration of SRC in the order: TEA>PTEA>MEA.

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    Elsevier

    The Boulevard, Langford Lane
    Kidlington, Oxford  United Kingdom  OX5 1GB
  • Authors:
    • Aiad, I
    • Mohammed, A A
    • Abo-EL-Enein, S A
  • Publication Date: 2003-1

Language

  • English

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  • Accession Number: 00986451
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Feb 8 2005 12:00AM