Work Item
ASTM WK76846

New Test Method for Measuring Corrosion Rate of Uncoated Reinforcing Steel in Concrete

1. Scope

This proposed test method covers the procedure for measuring of the corrosion rate of uncoated reinforcing steel in field and laboratory concrete, for the purpose of determining the corrosion activity of the reinforcing steel. Several electrochemical techniques that allow measuring the polarization resistance/corrosion rate in the field are covered by this standard, including galvanostatic, potentiostatic, potentiodynamic and electrochemical impedance spectroscopy techniques.

Keywords

Concrete reinforcement corrosion; electrochemical corrosion monitoring; polarization resistance; concrete durability; concrete inspection and evaluation

Rationale

Reinforcing steel corrosion monitoring and inspection is done frequently for concrete structures susceptible to corrosion. The results are typically used to locate areas with corrosion activity, project future damage to concrete, differentiate areas suffering distress due to corrosion from these suffering other degradation mechanisms and plan for repair and rehabilitation strategies. Due to wide interest in corrosion monitoring, several commercial devices are already available. The user typically follows manufacturers' recommendations when performing the measurements. However, these recommendations can vary from one device to another (e.g. different scan rates, surface preparation methods, IR correction techniques, etc.) Therefore, there is a need to standardize these methods and provide guidance to the user in order to ensure the results are comparable.

The title and scope are in draft form and are under development within this ASTM Committee.

Details

Developed by Subcommittee: G01.11

Committee: G01

Staff Manager: Krista Robbins

Work Item Status

Date Initiated: 05-09-2021

Technical Contact: Andrew Fahim

Item: 000

Ballot:

Status: