Model of pore liquid alkalinity change at concrete cross section for aggressive exploitation conditions
According to laboratory investigation of reinforced concrete elements samples exploiting in different according the degree of aggressiveness conditions of agricultural buildings, there were obtained regressive dependencies of pore liquid alkalinity change (pH index) in the area of reinforcement location. On their basis and taking into consideration obtained earlier regression dependencies of pH index change at concrete cross section of samples produced in industrial conditions with heat and humidity treatment (HHT), there were offered the models of pore liquid alkalinity change against time at cross section for concretes of different compression strength classes for different degree of aggressiveness air environment of agricultural buildings.