Synergistic Roles of Slag and Silica Fume in Very High-Strength Concrete

    Volume 12, Issue 1 (July 1990)

    ISSN: 0149-6123

    CODEN: CCAOAD

    Page Count: 6


    Djellouli, H
    Attaché de recherche, professeur titulaire, and graduate student, Faculté des Sciences Appliquées, Université de Sherbrooke, Sherbrooke, Quebec

    Aitcin, P-C
    Attaché de recherche, professeur titulaire, and graduate student, Faculté des Sciences Appliquées, Université de Sherbrooke, Sherbrooke, Quebec

    Sarkar, S
    Attaché de recherche, professeur titulaire, and graduate student, Faculté des Sciences Appliquées, Université de Sherbrooke, Sherbrooke, Quebec

    Abstract

    A very high-strength concrete (W/C = 0.20) containing 10% silica fume, 30% slag replacement for cement, and a high-range water-reducing admixture attained a compressive strength of 94 MPa at 28 days. The microstructural development of this concrete was studied from 1 to 28 days with SEM/EDXA and TEM. The slag used was reactive, with 70% melilite group phases and an index of hydraulicity of 1.2. Microstructural changes occurring in the first 28 days are presented. The factors responsible for promoting strength are also discussed.


    Paper ID: CCA10386J

    DOI: 10.1520/CCA10386J

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    Author
    Title Synergistic Roles of Slag and Silica Fume in Very High-Strength Concrete
    Symposium , 0000-00-00
    Committee C09