Trends of Corrosion Rate Assessment in Hydrochloric Acid Reinforced Concrete Environment

Abstract

The purpose of this study was to evaluate how corrosion treatments affected the rates of corrosion in concrete technology. Concrete samples of 140 mm x 100 mm x 50 mm were reinforced with reinforcing materials (give the name of the material) , and corrosion

was measured gravimetrically. Concrete samples were combined in a 1:2:4 ratio and exposed to 0.1M, 0.2M, and 0.3M of HCl acid, while

distilled water served as the control. The findings demonstrated that, with the exception of 0.3M, corrosion rates reduced as the number of observation days rose. Over the course of seven days, the corrosion rates for 0.1M HCL, 0.2M HCl, and 0.3M   HCl were 0.853mm/yr,

0.804mm/yr, and 0.153mm/yr respectively. Corrosion rates increased and decreased at 0.3M for 21 days after being similar for 14 days. Corrosion rates at 28 days were 0.057776 mm/yr, 0.068321 mm/yr, and 0.061989 mm/yr for concentration levels of 0.1M, 0.2M, and 0.3M, respectively. As HCl acid environment concentration levels increase, the research indicates that corrosion rates for reinforced concrete

decrease with increasing observation ages. This could be because the acid progressively turns the concrete alkaline, forming a protective

coating over the buried steel.