Graduation Year
2015
Document Type
Thesis
Degree
M.S.M.S.E.
Degree Name
MS in Materials Science and Engineering (M.S.M.S.E)
Degree Granting Department
Chemical Engineering
Major Professor
Alberto Sagüés, Ph.D.
Committee Member
Andrés Tejada-Martinez, Ph.D.
Committee Member
John Kuhn, Ph.D.
Keywords
COMSOL, Corrosion, Electrochemistry, Finite Element, Concrete
Abstract
Recent corrosion related failures of grouted post tensioned tendons, even after the introduction of improved grouts, have led to renewed interest in supplemental or backup means of corrosion control for these systems. A finite element model is presented to explore feasibility of impressed current cathodic protection of strand in grouted tendons. The model examines polarization evolution as function of service time and includes consideration of anode placement and size, grout porosity, pore water alkalinity, electrochemical species diffusivity and applied voltage on the polarization efficacy and durability of such a system. The exploratory model projections suggested that, within the context of the design parameters assumed, an impressed current cathodic protection system installed internally into a grouted duct for the purpose of cathodic protection of steel tensioning strand may be feasible for the case of initially passive steel.
Scholar Commons Citation
Bumgardner, Jacob Dharma, "Feasibility of Cathodic Protection in Grouted Post Tensioned Tendons - Exploratory Model Calculations" (2015). USF Tampa Graduate Theses and Dissertations.
https://digitalcommons.usf.edu/etd/5918
