АНАЛІЗ МІЦНОСТІ БЕТОНУ ПРИ М’ЯКОМУ РЕЖИМІ ТЕПЛОВОЇ ОБРОБКИ НАГРІТИМ ПОВІТРЯМ

Abstract

Thermal treatment of waterproofed cubes from heavy concrete with the use of heated air is carried out under the following conditions: the duration of heat treatment of concrete with heated air is 3 hours; the total duration of hardening of the samples in the laboratory chamber was 21 hours. It was found that the compressive strength of concrete aged 28 days in 1,02 - 1,03 times exceeds the compressive strength of concrete, the hardening of which occurred in air conditions (at the age of 1 day - in 1,94 - 2,12 times); equal to the compressive strength of concrete, the hardening of which occurred under normal conditions.