EXPERIMENTAL STUDY ON THE CREEP EFFECT OF THE EXPANSIVE AGENT AND RECYCLED CFST COLUMN IN CONSTRUCTION

Wang Haiyang; Zha Xiaoxiong; Huang Haochun; Wang Xiaodong

doi:10.13204/j.gyjz201106008

Volume 41 Issue 6

Dec. 2014

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Wang Haiyang, Zha Xiaoxiong, Huang Haochun, Wang Xiaodong. EXPERIMENTAL STUDY ON THE CREEP EFFECT OF THE EXPANSIVE AGENT AND RECYCLED CFST COLUMN IN CONSTRUCTION[J]. INDUSTRIAL CONSTRUCTION, 2011, 41(6): 43-46,66. doi: 10.13204/j.gyjz201106008

Citation:

Wang Haiyang, Zha Xiaoxiong, Huang Haochun, Wang Xiaodong. EXPERIMENTAL STUDY ON THE CREEP EFFECT OF THE EXPANSIVE AGENT AND RECYCLED CFST COLUMN IN CONSTRUCTION[J]. INDUSTRIAL CONSTRUCTION, 2011, 41(6): 43-46,66. doi: 10.13204/j.gyjz201106008

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EXPERIMENTAL STUDY ON THE CREEP EFFECT OF THE EXPANSIVE AGENT AND RECYCLED CFST COLUMN IN CONSTRUCTION

doi: 10.13204/j.gyjz201106008

1.
1. Shenzhen Graduate School,Harbin Institute of Technology,Shenzhen 518055,China;
2.
2. China Construction 5th Engineering Bureau,Dongguan 523000,China

Received Date: 2011-02-12
Publish Date: 2011-06-20

Abstract

Abstract

In the practical construction of a concrete-filled steel tube(CFST)column, the effect of the creep on the CFST performance can not be ignored, which caused by the stratified construction as well as the using of expansive agent to remedy the shrinkage of the concrete.Based on the simulation the stratified construction, a series of experiments were conducted to study effect of the expansive agent dosage on the ultimate bearing capacity of CFST columns and the creep deformation in the longitudinal direction.Also the corresponding properties of the regeneration aggregate concrete filled steel tube(RACFST)have been studied.It has been found that the ultimate bearing capacity of the CFST column can be increased greatly when using more expansive agent, as well as the creep deformation.And the time-interval between two dead-loads also makes a large influence on the creep performance of the CFST column, when the time-interval increases, the amplitude of the creep deformation gets a remarkable decreasing.In contrast, it is a greater influence on the deformation of the RACFST column than the CFST one, and a smaller influence on the ultimate bearing capacity.
- CFST column,
- the expansive agent,
- creep,
- multi-stage loading,
- recyled aggregate concrete

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References(14)

References

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