Abstract
We have studied the effect of water glass prepared by a wet-chemical process on the principal properties of structural materials using alkali-activated mineral binders and determined the optimal hydrothermal leaching time for tripoli, corresponding to the maximum SiO2 concentration in the water glass slurry. We have investigated the initial structure of the tripoli and the leaching-induced structural changes in its mineral component. The influence of three types of mixing agents has been analyzed in the context of the preparation of materials: water glass in the form of slurry, water glass slurry filtrate, and the filtered-off insoluble residue of the slurry in the form of thick mass. The strength of the obtained materials increases in the following order: insoluble residue < filtrate < slurry. The present results demonstrate that the materials have high strength characteristics and that water glass prepared by a wet-chemical process is potentially attractive for practical application.
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