Architectural Engineering Commons^™

A Comparison Between Ultrasonic Guided Wave Leakage And Half-Cell Potential Methods In Detection Of Corrosion In Reinforced Concrete Structures, Ahmad Shoaib Amiri

Durham School of Architectural Engineering and Construction: Dissertations, Theses, and Student Research

Corrosion of reinforcing steel bars (rebar) in reinforced concrete decks can lead to serious structural issues in bridges. Ultrasonic Testing (UT) methods provide small wavelengths that can be used for early detection of several types of deterioration. The recently-developed Ultrasonic Guided Wave Leakage (UGWL) Method utilizes steel as the waveguide and measures the energy leaked into the surrounding concrete. Previous studies completed at University of Nebraska-Lincoln demonstrated that the measurements of the leaked energy using receivers from the concrete surface can successfully identify early stages of various flaws such as corrosion, delamination, and cracking. In this method, the longitudinal waves …