AASHTO T 373M/T 373-17 PDF Download

AASHTO T 373M/T 373-17 (2021) is a standard that outlines procedures for comparing the qualitative corrosion characteristics of steel bars used for concrete reinforcement. Specifically, it focuses on the evaluation of uncoated Corrosion Resistant Reinforcing (CRR) M 334M/M 334 alloy steel bars in comparison to M 31M/M 31 or other reference bars. The evaluation is performed using electrochemical polarization resistance and potentiodynamic polarization tests carried out in various test solutions.

The purpose of these tests is to assess the corrosion performance of the uncoated CRR bars based on two factors: the pH of the environment and the concentration of chloride ions, particularly the [Cl?]/[OH?] threshold ratio. By conducting these tests, engineers and researchers can gain insights into the corrosion resistance of the steel bars under different conditions, which is crucial for ensuring the durability and longevity of reinforced concrete structures.