Influence of Calcium Chloride on the Drying Shrinkage of Alite Paste

    Volume 4, Issue 1 (January 1976)

    ISSN: 0090-3973

    CODEN: JTEOAD

    Page Count: 9


    Berger, RL
    Professor, Departments of Civil and Ceramic Engineering; research assistant, Department of Ceramic Engineering; and associate professor, Department of Civil Engineering, University of Illinois, Urbana, Ill.

    Kung, JH
    Professor, Departments of Civil and Ceramic Engineering; research assistant, Department of Ceramic Engineering; and associate professor, Department of Civil Engineering, University of Illinois, Urbana, Ill.

    Young, JF
    Professor, Departments of Civil and Ceramic Engineering; research assistant, Department of Ceramic Engineering; and associate professor, Department of Civil Engineering, University of Illinois, Urbana, Ill.

    Abstract

    The drying shrinkage at 55% relative humidity of alite pastes with and without 1% calcium chloride (CaCl2) at equal degrees of hydration was investigated. CaCl2 increases drying shrinkage at all levels of hydration studied. However, the difference in drying shrinkage of pastes with and without 1% CaCl2 decreased with increased hydration. Shrinkage of pastes with CaCl2 decreased with increasing hydration (40 to 75%), whereas shrinkage of pastes without CaCl2 increased with increasing hydration (43 to 62%). A larger weight loss during drying was noted in pastes without CaCl2. Reference is made to the relationship between the observed shrinkage in alite pastes and differences in the pore size distributions of tricalcium silicate pastes with and without CaCl2.


    Paper ID: JTE10511J

    DOI: 10.1520/JTE10511J

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    Author
    Title Influence of Calcium Chloride on the Drying Shrinkage of Alite Paste
    Symposium , 0000-00-00
    Committee C01