РАСЧЕТНОЕ ПРОГНОЗИРОВАНИЕ МОРОЗОСТОЙКОСТИ БЕТОНА ПРИ ПРОЕКТИРОВАНИИ ЕГО СОСТАВОВ

Leonid Dvorkin

doi:10.48076/2413-9890.2018-97-01

Authors

Leonid Dvorkin National University of Water and Environmental Engineering http://orcid.org/0000-0001-8759-6318

DOI:

https://doi.org/10.48076/2413-9890.2018-97-01

Keywords:

frost resistance, compressive strength, capillary porosity, entrained air

Abstract

The article substantiates the possibility of taking into account the required frost resistance of concrete according to the number of cycles of its freezing and thawing in a water-saturated state without significant reduction in strength at the stage of designing its compositions. The review of proposed calculated dependences of frost resistance of concrete on factors of its structure and composition is made, their advantages and disadvantages are analyzed. On the basis of a statistical analysis of the experimental data, a formula is proposed that establishes a relationship between the possible number of cycles of freezing and thawing of concrete with the strength of concrete under compression and the volume of entrained air. An algorithm for designing concrete compositions with a complex of required properties, including frost resistance, and an example of its implementation are given

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