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What is Bonded vs Unbonded Post-Tensioning about?

This paper compares the structural response of unbonded and bonded post-tensioned concrete slabs under fire conditions. Sixteen tests were conducted on slabs at ambient and elevated temperatures. In fire tests, cracks formed at low tendon temperatures due to thermal stresses. Unbonded and bonded slabs with Thames gravel aggregates deflected more than those with limestone aggregates. Plastic ducts in bonded slabs resulted in slightly higher tendon temperatures than metallic ducts due to easier water migratio

Author

Hemal Mistry

Language

EN