Journal Published Online: 01 June 1995
Volume 17, Issue 1

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



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.

Author Information

Xie, P
University of Ottawa, Ottawa, Ontario, Canada
Gu, P
University of Ottawa, Ottawa, Ontario, Canada
Fu, Y
University of Ottawa, Ottawa, Ontario, Canada
Beaudoin, JJ
National Research Council, Institute for Research in Construction, Materials Laboratory, Ottawa, Ontario, Canada
Pages: 5
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Stock #: CCA10341J
ISSN: 0149-6123
DOI: 10.1520/CCA10341J