Use of Ground Granulated Slag in High-Performance Concrete

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Title: Use of Ground Granulated Slag in High-Performance Concrete

Author(s): Hocine Djellouli, Pierre-Claude Aitcin, and Omar Chaalaar

Publication: Special Publication

Volume: 121

Issue:

Appears on pages(s): 351-368

Keywords: blast furnace slag; durability; high-strength concretes; economics; modulus of elasticity; rheological properties; silica fume; strength; tests; Materials Research

Date: 11/1/1990

Abstract:
High-performance concrete has been made using different cementitious combinations: portland cement and fly ash; portland cement and silica fume, and portland cement, ground granulated slag, and silica fume. The use of a supplementary cementitious material like fly ash or ground granulated slag is not only interesting from an economical point of view but also from a rheological point of view. Replacing in some cases up to 20 percent of cement by a less reactive cementitious material like fly ash or up to 50 percent by ground granulated slag can solve the slump loss problem observed with some very reactive cements when used at water/cement ratios ranging from 0.25 to 0.30. Moreover, the use of a supplementary cementitious material results in a significant decrease in the superplasticizer dosage needed to achieve a given workability. In terms of rheology, compressive strength, and cost, one of the most promising combinations of cementitious materials for high-performance concrete is a mixture of ground granulated slag, silica fume, and portland cement, when ground granulated slag is available at a reasonable price.