Experimental study on thermal and moisture performance of B05 grade ALC wall

The isothermal adsorption curve and thermal conductivity of autoclaved lightweight concrete (ALC) are important indicators of its thermal and moisture performance parameters. The relationship between the moisture content of B05 grade ALC and the relative humidity of the surrounding environment at an ambient temperature of 25 ℃ is studied experimentally, and the isothermal adsorption curve and mathematical analytical formula are given. The transient plane heat source method is used to test the thermal conductivity of B05 grade ALC under different equilibrium moisture content, and the functional relationship between thermal conductivity and equilibrium moisture content under the experimental conditions is fitted. The research results show that the ALC isothermal adsorption curve can be accurately described by the Peleg formula, and the growth rate of the equilibrium moisture content increases with the increase of the environmental relative humidity. The thermal conductivity of ALC shows an exponential monotonic increasing trend with the increase of the equilibrium moisture content, and the higher the equilibrium moisture content is, the faster the thermal conductivity growth rate is.