American Society of Civil Engineers

Study of Partially Prestressed Beams With Unbonded Post-Tensioning

by P. R. Chakrabarti, (California State Univ, United States) and Tai Ping Whang, (California State Univ, United States)

pp. 189-200

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Document type: Conference Proceeding Paper
Part of: Structural Design, Analysis and Testing
Abstract: Test on partially prestressed members with bonded Post-Tensioning started recently. Experimental information regarding partially prestressed members having unbonded post-tensioning is very limited. In this paper, an attempt is made to study the cracking and ultimate strength behavior of simply supported beams having partial prestressing of unbonded type. Further investigation will be extended to find an optimum combination of prestressing and reinforcing steel. Eight beams were tested to failure in the first phase of this investigation. Test results are reported with specific conclusions and recommendations for future design provisions and code revisions.

ASCE Subject Headings:
Post tensioning
Reinforcing steel
Standards and codes

Author Keywords:
Beams and Girders
Building Codes - Concrete Construction--Prestressing - Concrete Reinforcements--Bond - Concrete Testing - Concrete--Stresses
Bonded Reinforcements - Partially Prestressed Beams - Reinforced Concrete Cracking - Ultimate Strength Behavior - Unbonded Post Tensioning - Yield Stress