Transcription of REPAIRS, MODIFICATIONS, AND STRENGTHENING WITH …
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REPAIRS, MODIFICATIONS, AND STRENGTHENING WITH …
24|PTIJOURNAL |July 2006 ABSTRACTPost-tensioning can be used for repairs, modification andstrengthening of reinforced concrete and post-tensionedstructures. The article describes some of the commonlyused techniques and precautions for detensioning tendons,repairs and re-stressing of tendons. The article gives guid-ance to practicing engineers and contractors on techniquesthat can be used to create new openings in existing post-tensioned structures. The article also explores techniquesfor the STRENGTHENING of existing structures by ; coupler; external post-tensioning; rehabilita-tion; repairs; STRENGTHENING ; Journal, V. 4, No. 1, July 2006. Received and reviewed under Institutejournal publication policies. Copyright 2006, Post-Tensioning rights reserved, including the making of copies unless permission isobtained from the Post-Tensioning Institute.
Prestressed wires or strands often fail as a result of the loss of steel cross-sectional area due to conventional electro-chemical corrosion (rusting) or brittle fracture due to
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