Influence of Atmospheric Humidity on the Critical Buckling Load of Reinforced Concrete Columns

In this paper, an evaluation of the influence atmospheric humidity on critical buckling load reinforced concrete columns is performed. A particular case consisting a real, extremely slender pole was taken for study. The chosen mathematical procedure calculating based Mechanics Deformable Solids due to variations structure vibration frequency over time. rheological behavior related creep and shrinkage, which illustrates time-dependent aspect problem, also considered in analysis following normative recommendations from Brazilian Association Technical Standards (ABNT). order evaluate value changes loads, different time instants after loading as well relative 0% 100%, 10% increments were considered. According selected criteria, it possible verify that higher decreases water transport interior out exterior surfaces concrete, hence positively influencing stiffness. Therefore, lowest reduction 41.9% at 100% humidity, versus highest 60.7% humidity. period 7500 days analysis.