The Influence of Recipe-Technological Factors on the Resistance to Chloride Attack of Variotropic and Conventional Concrete

A current problem in the construction industry is lack of complex, scientifically based technological materials and design solutions for universal types building materials, products, structures, especially terms structures operating under conditions aggressive chloride exposure. The aim study was to compare evaluate differences durability conventional variotropic concretes made using three different technologies, vibrating, centrifuging, vibro-centrifuging, modified with addition microsilica, cyclic attack. Laboratory experiments analyses scanning electron microscopy were conducted. Vibro-centrifuged concrete showed highest resistance exposure, which expressed by a lower percentage drop compressive strength compared vibrated (87%) centrifuged (24%). use microsilica as modifying additive amount 2–6%, instead part binder, had positive effect on most effective intervention introduction additives 4%. There reduction loss vibrated, centrifuged, vibro-centrifuged after 90 “dry-wet” cycles, result additive, an between 45% 55%, depending type technology being used producing composite. combined led 188% decrease resulting from