Abstract
The paper observes positive the influence of silica containing materials on cement systems. Practical and ecological parameters are shown. The data of a number and types of exchanges centers resulted from milling of industry-related materials are reported. Analysis of exchanges centers influence on cement hydration activity and “cement-mineral surface” contact zone interaction is provided. Theoretical justification of quartzitic sandstone and magnetic separation waste application as raw material for fillers is created. The influence of fillers surface on concrete structuring based on concrete plastic strength research is studied. It is determined that industry-related quartz-containing fillers application in amount 15 to 40% by weight of cement increases the plastic strength of cement paste and the speed of hydration processes. The period of structure formation of the cement stone is shortened, the intensity of hydrate accumulation processes increases. These data confirm the results of x-ray phase analysis of cement stone samples. A large amount of low and high basic capacity hydrosilicates is discovered during magnetic separation waste and quartzitic sandstone application. The use of the researched materials as fine fillers in cement concrete allows obtaining a composite with improved physico-mechanical characteristics and durability.
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