Abstract
The effect of mineral admixtures used in the production of autoclaved sand-lime brick was investigated. The waste materials and by-products of pozzolanic properties-fly ashes, microsilica, were added to the mixture composed of quartz sand and burnt lime. The hydraulic admixture-granulated blast furnace slag and activators (gypsum, etc) were also taken into account. The phase composition and microstructure of materials were characterised using XRD, SEM+EDS and mercury porosimetry. The standard mechanical properties of sand-lime brick were also determined, including absorbability: leaching was not, however, investigated.
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