Бетони поліфункціонального призначення на основі композиційних цеолітвмісних портландцементів


Саницький М. А., Кропивницька Т. П., Гев`юк І. М., Котів М. В. / Sanytsky М. А., Kropyvnytska Т. P., Gevyuk І. М., Kotiv М. V.

Національний університет “Львівська політехніка”,
кафедра будівельного виробництва

It was developed fundamentally new concept of creation of multifunctional purpose concretes using composite zeolite-containing Portland cements with optimized particle distribution and modification by chemical admixtures. It was established that the optimal content of fine zeolite and limestone additives provides obtaining of composite zeolite-containing Portland cement with high strength at early age. The results of technological properties of concrete mixtures, physical and mechanical properties of concretes based on composite zeolite-containing Portland cement are presented. It is shown that a synergistic combination of mineral additives of different groups with substantial reduction of high energy-consumption clinker component in the composite zeolite-containing Portland cements allows to improve rheological properties and provides acceleration of strength increase of binder and multifunctional purpose concretes on its basis. Investigated the influence of amount of Portland cement and additives of plasticizing effect on the properties of concrete mixtures and concretes by criteria of strength and porosity by the method of mathematical planning of experiment. It is shown that the addition of polycarboxylate admixture of new generation makes it possible to obtain self-compacting concretes based on composite zeolite-containing Portland cements. The modified concrete mixtures were used for monolithic concreting, production of columns and lintels, installation of self-leveling floors and ceilings.

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