Improvement of the mixing process and the influence on the AAC properties

Abstract

AbstractThe influence of the mixing process is normally not in the focus of the research of autoclaved aerated concrete. However, the homogeneous distribution of the individual raw material components plays a decisive role. Especially in bulk densities of less than 300 kg/m3, it is important to dissolve agglomerates and thus to allow optimal wetting of the solid particles with water. This is advantageous, for example, for the stability of the green cake, since the reactive surface of the binder particles increases and the hydration products therefore crosslink better. Another advantage of an ideal mixing process is the enhancement of the effect of additives used, especially if these are difficult to mix into water. The consequences are improved product properties or potential savings in terms of raw material costs.