EXPERIMENTAL RESEARCH ON PRESTRESSING TIME-DEPENDENT LOSS OF HIGH-PERFORMANCE CONCRETE BEAMS

Zhang Yuntao; Meng Shaoping; Xi Zhuo; Pan Zuanfeng; Lin Bo

doi:10.13204/j.gyjz200912006

Volume 39 Issue 12

Dec. 2014

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Zhang Yuntao, Meng Shaoping, Xi Zhuo, Pan Zuanfeng, Lin Bo. EXPERIMENTAL RESEARCH ON PRESTRESSING TIME-DEPENDENT LOSS OF HIGH-PERFORMANCE CONCRETE BEAMS[J]. INDUSTRIAL CONSTRUCTION, 2009, 39(12): 21-25. doi: 10.13204/j.gyjz200912006

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EXPERIMENTAL RESEARCH ON PRESTRESSING TIME-DEPENDENT LOSS OF HIGH-PERFORMANCE CONCRETE BEAMS

doi: 10.13204/j.gyjz200912006

1.
1. Key Laboratory of RC &PC Structures of Ministry of Education,Southeast University,Nanjing 210096,China;
2.
2. Anhui Institute of Architecture &Industry,Hefei 230022,China

Received Date: 2009-09-12
Publish Date: 2009-12-20

Abstract

Abstract

Experiments on prestressing time-dependent loss of C60 high-performance concrete(HPC) are carried out.By analyzing experimental results of shrinkage,creep,deflection and effective prestress of three prestressed concrete beams under natural environment,it is obtained that the increase in long-term deflection mainly depends on the sectional stress distribution of concrete.Deflection creep coefficient is larger than the one calculated by the code.It will be underestimated if creep coefficient is used to calculate the beam deflection for construction stage.The prestressing time-dependent loss in test will be greater than that in theory.
- high performance concrete,
- prestressing time-dependent loss,
- deflection creep coefficient,
- shrinkage,
- creep,
- stress relaxation

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References(10)

References

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