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Evaluation of the influence of ambient air temperature and air velocity on mortar cement durability using a forced convection solar dryer
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Evaluation of the influence of ambient air temperature and air velocity on mortar cement durability using a forced convection solar dryer
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Evaluation of the influence of ambient air temperature and air velocity on mortar cement durability using a forced convection solar dryer
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Journal Article
Evaluation of the influence of ambient air temperature and air velocity on mortar cement durability using a forced convection solar dryer
2022
Overview
Purpose>This work aims to study the hydrothermal behavior of mortar cement toward certain environmental factors (ambient air temperature and air velocity) based on its drying kinetics data. The objective is to provide a better understanding and controlling the stability of mortar structures, which integrate the sorption phenomenon, drying process, air pressure and intrinsic characteristics. This leads to predict the comportment of mortar structures in relation with main environmental factors and minimize the risk of cracking mortar structures at an early age.Design/methodology/approach>Thermokinetic study was carried out in natural and forced convection solar drying at three temperatures 20, 30 and 40°C and three air velocities (1, 3 and 5 m.s-1). The empirical and semiempirical models tested successfully describe the drying kinetics of mortar. These models simulate the drying process of water absorbed by capillarity, which is the most common humidity transfer mechanism in building materials and contain parameters with physical significance, which integrate the effect of several environmental factors and intrinsic characteristics of mortar structures.Findings>The models simulate the drying process of water absorbed by capillarity, which is the most common humidity transfer mechanism in building materials and contain parameters with physical significance, which integrate the effect of several environmental factors and intrinsic characteristics of mortar structures. The average activation energy obtained expressed the temperature effect on the mortar diffusivity. The drying constant and the diffusion coefficient can be used to predict the influence of these environmental factors on the drying behavior of various building materials and therefore on their durability.Originality/value>Evaluation of the effect of several environmental factors and intrinsic characteristics of mortar structures on their durability.
