Influence of HCl corrosion on the mechanical properties of concrete

摘要: Corrosion damage in three types of concrete (C25, C45, and C55), resulting from HCl with various contents, was investigated by comparing the mechanical properties different their corrosion damage. The test samples that were cured for 360 days exposed an aggressive environment (with 5%, 10%, 15%, 20% content, respectively) 24 h. mass loss, dynamic modulus flexural strength, compressive strength measured using a series etched samples. results indicate degraded increasing content medium. both high- (C55) normal-strength concretes (C25) exhibited similar degradation strength. On other hand, due to its greater sensitivity defects when bending load is applied, showed decline than concrete, which has loss elastic modulus.