Applied Voltage on Corrosion Mass Loss and Cracking Behavior of Steel-Reinforced SHCC and Mortar Specimens
Publication: Journal of Materials in Civil Engineering
Volume 29, Issue 5
Abstract
This study compares the durability, in terms of resistance to corrosion, of strain-hardening fiber-reinforced cement-based composite (SHCC) and the same matrix without fiber (mortar). The corrosion mass loss of embedded steel bars and the cracking behavior of specimens under the influence of varied applied voltages and concrete cover depths were investigated. The relationship between the crack width and cover depth and its relation to corrosion mass loss is established. The study has been performed through an accelerated corrosion test. The test setup involved the placement of the reinforced SHCC and mortar prism specimens in a 5% (by weight) sodium chloride solution and then applying various direct currents (DC) by a power source in the range of 10–30 V to the specimens to accelerate the corrosion process. Actual and estimated corrosion mass losses (using Faraday’s equation) at different concrete cover depths were also compared. The result has shown that applied voltage and concrete cover depth have significant effects on the corrosion mass loss and cracking behavior of SHCC and mortar. However, mortar specimens had significantly higher crack widths than SHCC specimens.
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Published In
Journal of Materials in Civil Engineering
Volume 29 • Issue 5 • May 2017
Copyright
©2016 American Society of Civil Engineers.
History
Received: Mar 14, 2016
Accepted: Sep 1, 2016
Published online: Nov 16, 2016
Discussion open until: Apr 16, 2017
Published in print: May 1, 2017
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