Hydrogen Permeation in Cracked Concrete Environments

Abstract

Hydrogen penetration into PC steel bars in utility poles occurs in narrow environments such as inside concrete cracks. However, hydrogen penetration phenomena are generally evaluated under a uniform environment, such as immersion tests in alkaline solutions. In this study, we constructed a system for evaluating hydrogen penetration into pure iron in an environment that simulates cracks in the concrete of a utility pole. It was found that a non-uniform hydrogen penetration phenomenon occurred in this narrow environment.