ABSTRACT
ABSTRACT: In this research it has been analytically proved that using of concrete’s residual strain as a measure of damage instead of decreasing of tensile strength increases an accuracy of material’s frost resistance by the time of freeze-thaw cycling. Also it has been experimentally shown that ratio of relative decreasing tensile strength to residual strain in direction perpendicular to compression is assumed to be independent on values tensile strength and residual strain for a given concrete and on the ways of achieving them during mechanical or freeze-thaw cycling. Taking this into account patented methods for estimation of concrete’s freeze-thaw resistance as per values tensile strength and ε received after freezing and thawing cycles of some specimens and their postliminary failure by linear compression was substantiated.
