Effectiveness of Different Types on Anti-Burst Reinforcements for Achorage Zones of Post-Tensioned Concrete Slabs

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Title Effectiveness of Different Types on Anti-Burst Reinforcements for Achorage Zones of Post-Tensioned Concrete Slabs
Author Chowdhury, Sanaul Huq; Loo, Yew-Chaye
Publication Title First International Congress University-Industry Cooperation : Proceedings of UNINDU 2005
Editor Giorgio E. O. Giacaglia
Year Published 2005
Place of publication Taubate, SP, Brazil
Publisher UNITAU
Abstract A post-tensioned prestressed system basically consists of a high strength tendon or strand running through the length of the concrete structure. The strand is stressed using a hydraulic jack, the tensile stressing force of the strand is transferred into the concrete by the use of anchorages. One of the most critical aspects of post-tensioned construction, which is also necessary for the success of the system, is the anchorage zone. The relatively large compressive forces generated from the strand are applied to the concrete over a small area. For this reason steel reinforcement known as anti-burst is used in the anchorage zone to control cracking caused by tensile forces as a result of the tensioning. Eight 150 mm thick 400mm x 1000mm post-tensioned concrete slabs with varying types of anti-burst reinforcements and two different concrete strengths were designed and tested to failure. Pull out tests were conducted at up to 95% of the tendon's tensile strength to find out the most effective type of anti-burst reinforcement and the effect of variation in concrete strengths. The rectangular helices type was found to be the best performer while the higher concrete strength was the better.
Peer Reviewed Yes
Published Yes
ISBN 85-905532-1-3
Conference name 1st International Congress University-Industry Cooperation (UNINDU 2005)
Location Ubatuba, Sao Paulo, Brazil
Date From 2005-09-11
Date To 2005-09-15
URI http://hdl.handle.net/10072/2630
Date Accessioned 2006-01-08
Date Available 2007-03-21T21:27:39Z
Language en_AU
Research Centre Centre for Infrastructure Engineering and Management
Faculty Faculty of Engineering and Information Technology
Subject Structural Engineering
Publication Type Conference Publications (Full Written Paper - Refereed)
Publication Type Code e1

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