Category Archives: Field Issues
Recently, a concrete contractor called me to find out the volume of our unbonded post-tensioning system within an elevated concrete deck. He wanted to find out how much concrete was NOT used due to the volume-displacement from the post-tensioning tendons. … Continue reading
This short video shows field-seating a fixed-end anchor onto an unbonded post-tensioning tendon with a hydraulic jack. Related Articles: http://www.amsyscoinc.com/2010/07/01/field-seating-fixed-end-anchor/ ____________________________________________ Copyright © 2012 by AMSYSCO, Inc. All rights reserved.
On occasion, a post-tension cable may break at the fixed end anchor during the stressing operation. The possible causes of tendon breakage include: A kink in the steel strand. Incorrect fixed-end seating of wedges. A concrete void behind the fixed-end anchor. … Continue reading