A Penn State study has shown that there are U.S. oils that can match or exceed the characteristics of the European leader for temporary corrosion protection of concrete bridge tendons.
An undamaged tendon (left) a tendon subjected to the salt solution test and the test tube.
Photo Credit: Greg Grieco, Penn State
Dr. Andrea Schokker, the Henderson professor of civil engineering, who led the project, says, "The North American post-tensioning industry was considering importing the European product, possibly at higher cost than the oils available in the U.S. market. Our study established that there are adequate products available in North America to do the job."
The study is detailed in the current issue of the Post-Tensioning Institute Journal in a paper, "Bond and Corrosion Studies of Emulsifiable Oils Used for Corrosion Protection in Post-Tensioned Tendons." The authors are Edwin Salcedo-Rueda, a Penn State doctoral candidate in civil engineering; Schokker: Dr. John E. Breen, who holds the Nasser I. Al-Rashid chair in civil engineering at the University of Texas at Austin; and Dr. Michael E. Kreger, professor of civil engineering at Purdue University.
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