Materiales de Construcción, Vol 61, No 302 (2011)

Ground granulated blast furnace slag efficiency coefficient (k value) in concrete. Applications and limits


https://doi.org/10.3989/mc.2011.60410

M. A. Sanjuán
Instituto Español del Cemento y sus Aplicaciones (IECA), Spain

A. Piñeiro
Instituto Español del Cemento y sus Aplicaciones (IECA), Spain

O. Rodríguez
Centro Nacional de Investigaciones Metalúrgicas (CENIM-CSIC), Spain

Abstract


Recently, a k-value for ground granulated blast-furnace slag or k-value has been added to the revision of the European standard EN 206-1:2000. The proposed values during the disscusion in the working groups were very different because in most of cases the compressive strength was the only characteristic considered; while only in few cases the concrete durability was taken into account when ground granulated blast-furnace slag is added directly to the mix.
Advantages and disadvantages of the k-values found in the literature are discussed in this paper. The final conclusion may be summarised suggesting a logical proposal of addressing to each country the choice of the k-value in function of the concrete application, environment and placing conditions selected according to their own experience.

Keywords


k-value; ground granulated blast-furnace slag; concrete; EN 206-1; durability

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References


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