Příprava pojiv alkalickou aktivací alternativních surovin

Abstract

PhD thesis "Binders preparation by alkaline activation of alternative materials", summarizes the results of which were part of the project of the Grant Agency of the Czech Republic, "Influence of phase composition and microstructure on the functional properties of the geopolymer systems technogenic pozzolana" (project number 106/09/0588). The work was solved at the Department of Thermal Engineering - Institute of Industrial Ceramics, FMMI VSB-TU Ostrava. Experimental part in the introduction is focus on the rationale for the selection of suitable raw materials - by-products of metallurgy and energy. Furthermore were appraised properties of raw materials, realized the experiments by mechanical activation - milling and has been designed some variations composition of mixtures raw material. These mixtures were treated with two types of alkaline activators and with optimized procedures were prepared laboratory samples. The results bringing new informations in context between the concrete composition of mixtures, quality materials and finall parameters of alkali-activated composites and binders so-called geopolymer cement-free. Grinding FA increases long-time compressive strength of materials for concrete way of milling. Can be found optimal conditions, guarantee higher reactivity of FA. Addition fly FA to GBFS changes hydration action in system and formed CSH phase supplemented hydrates type of C-A-S-H and thus improves the corrosion resistance of materials.