Equilibration of Chloride Ions in Concrete Bridge Decks after Rehabilitation Using Hydro-Demolition and Concrete Overlay

Authors

Elizabeth Newbill, Brigham Young University
Dr. Spencer Guthrie, Brigham Young University

Keywords

chloride ions, concrete bridge decks, rehabilitation, hydro-demolition, concrete overlay

College

Ira A. Fulton College of Engineering and Technology

Department

Civil and Environmental Engineering

Abstract

In cold regions like northern Utah, harsh winters can lead to decreases in the service life of concrete bridge decks. Chloride-based deicing salts, which are commonly used to remove snow and ice from the surface of concrete bridge decks during winter months, are of particular concern. Even in uncracked concrete, chloride ions can diffuse into the bridge deck and eventually lead to corrosion of the embedded reinforcing steel. When chlorides corrode the steel, expansive rust forms, which causes cracks to form in the deck. These cracks allow for greater chloride ingress, accelerating the corrosion and deterioration processes within the bridge deck.

Recommended Citation

Newbill, Elizabeth and Guthrie, Dr. Spencer (2018) "Equilibration of Chloride Ions in Concrete Bridge Decks after Rehabilitation Using Hydro-Demolition and Concrete Overlay," Journal of Undergraduate Research: Vol. 2018: Iss. 1, Article 17.
Available at: https://scholarsarchive.byu.edu/jur/vol2018/iss1/17