Determination of Blast-Furnace Slag Content in Hardened Concrete by Electrical Conductivity Methods

    Volume 17, Issue 1 (June 1995)

    ISSN: 0149-6123

    CODEN: CCAOAD

    Page Count: 5


    Beaudoin, JJ
    Section head and principal research officer, National Research Council, Institute for Research in Construction, Materials Laboratory, Ottawa, Ontario

    Gu, P
    Research scientists, University of Ottawa, Ottawa, Ontario

    Xie, P
    Research scientists, University of Ottawa, Ottawa, Ontario

    Fu, Y
    Research scientists, University of Ottawa, Ottawa, Ontario

    Abstract

    Electrical conductivity measurements were made on concrete systems containing blast-furnace slag. It was found that the slag content significantly influenced the concrete conductivity. A linear relationship between the concrete conductivity and the slag content and the volume fraction of aggregate was established by experiment. The relationship can be expressed as follows σc=ka·ϕa+ks·(slgc)+ko where σc is the concrete conductivity; φa is the volumetric fraction of aggregate; (slg/c) is the relative content of slag by weight of cementitious materials; and ka, ks, and ka are empirical coefficients. This relationship provides a basis for the determination of slag content in hardened concrete by electrical conductivity methods.


    Paper ID: CCA10341J

    DOI: 10.1520/CCA10341J

    ASTM International is a member of CrossRef.

    Author
    Title Determination of Blast-Furnace Slag Content in Hardened Concrete by Electrical Conductivity Methods
    Symposium , 0000-00-00
    Committee C09