Review article

The authors present the results of the study of concrete core samples extracted from the concrete coating of the airfield that was exposed to alkaline corrosion. It is shown that by the nature of the volumetric deformation kinetics, concrete samples can be classified into three groups: samples mainly subjected to swelling; samples mainly subjected to shrinkage; samples that have a marked technogenic metasomatosis. The experimetal investigation results have confirmed the theoretical conclusions drawn on the base of the technogenic metasomatosis model. There have been revealed the facts of latent technogenic metasomatosis, confirming its prevalence in concrete products. The study of volumetric deformation of samples during their exposure to various media provides additional information for assessing the material`s durability: the ascertained deformation of the samples is the evidence of the exchange processes that will reduce the operation properties of the material with an intensity increasing over time.