Blastfurnace slag properties

The three component cements with fly ash addition, apart from granulated blastfurnace slag CEM II/B-(S-V), have the advantageous properties first of all fairly good strength development. 

The other fine powder components, added to control the workability of concrete mixture are fly ash, limestone flour and ground granulated blastfurnace slag. The content of these mineral additions can be substantially high when cement type CEM 1 is used they substitute up to 50% cement, particularly that of class 42.5. One can conclude that the Portland cements with mineral additions can be also applied. The effect of limestone flour on the properties of concrete mixture was studied, among the others, by Gizeszczyk [32],... 

Nagataki, S., and Wu, C. (1995) study of the properties of Portland cement incorporating silica fume and blastfurnace slag. American Concrete Institute SP-153, pp. 1051-1068. 

The hydraulic properties of blastfurnace slag are determined by its chemical composition and its glass content. The latter should be above 90%. Methods of producing slag with 95-100% glass content are now available. 

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