Properties of alkali-activated slag cements

This article attempts to quantify the effect of the specific surface area and the particle size distribution of slag on the properties of alkali-activated slag cements. Amongst other things, the normal consistency, the bulk density, the water absorption and the compressive strength have been determined as a function of the setting time.

1 Introduction

Granulated blast furnace slag (GBFS) is an industrial byproduct of the iron production and a valuable mineral raw material. It is used in the production of different building materials. A history of more than 150 years of research and successful application has shown the great potential of using GBFS in the production of mineral binders. The chemical and mineralogical composition and the structure of the slag makes it possible to use GBFS as a main and supplementary component of various cements. Of the 27 “common cements” listed in the European standard EN 197-1:2000, nine...

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