AASHTO T 373M/T 373-17 (2021) PDF Download

AASHTO T 373M/T 373-17 (2021) is a standard that outlines the procedures for conducting tests to assess the comparative qualitative corrosion characteristics of steel bars used for concrete reinforcement. The focus of this standard is on evaluating uncoated Corrosion Resistant Reinforcing (CRR) M 334M/M 334 alloy steel bars in comparison to reference bars, such as M 31M/M 31, using electrochemical polarization resistance and potentiodynamic polarization measurements.

The tests are conducted in different test solutions to investigate the corrosion performance of the CRR bars under varying conditions. The standard specifically examines the impact of two factors: the pH of the environment and the concentration of chloride ions, with particular emphasis on the [Cl?]/[OH?] threshold ratio.