Abstract
The water vapor sorption equilibrium relationship of concrete determines the water transport rate in it, which affects the concrete structure’s durability. This study applied modeling to predict the water vapor sorption isotherms affected by temperature. Combined with the experimental data, the theoretical model predicted the effect of temperature on water vapor absorption–desorption isotherms and the hysteresis of desorption isotherms. The results showed that the hysteresis of capillary pores is larger than that of gel pores. An increase in temperature decreases the percentage of water hysteresis in gel pores, and increases the water hysteresis in small capillary pores.
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