Assessment of the influence of moisture content in enclosing concrete structures on heat losses

Abstract The purpose of the study is to determine effect wetting internal surfaces enclosing concrete structures on heat losses. Based experimental data earlier received by authors, increase in value losses under different conditions has been proved. irreversible character operating at increased humidity experimentally multi-layer model large-panel residential buildings and theory conduction a constant coefficient conductivity inside layer have used studies. M250 samples made manufacturers were chosen as basic material for research. Wetting was carried out laboratory conditions, humid environment with relative 100% partial immersion water atmospheric pressure temperature 200C. flux through each given thickness estimated according Fourier law. According results theoretical research, it found that: time drying exceeds more than twice, therefore process ineffective ventilation becomes irreversible; when only building envelope increases about 5%, leads intermediate 25%.