Analysis on Creep Property and Model of Bridge Girder Concrete with Various Mix Proportions

Fei Guo; Hong Gen Qin; Peng Fei Cao; Guan Guo Liu; Yun Sheng Zhang

doi:10.4028/www.scientific.net/AMM.368-370.1487

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 368-370Analysis on Creep Property and Model of Bridge...

Analysis on Creep Property and Model of Bridge Girder Concrete with Various Mix Proportions

Abstract:

Combined with the construction of Jinghang Canal Bridge of Jiangliu highway, shrinkage and creep property of the cast-in-situ high performance concrete of bridge girder was researched. The results showed early shrinkage and creep development of the high performance concrete was relatively rapid, and creep tended to be stable 120 days later. With the admixture increasing, shrinkage and creep of the concrete were reduced. Meanwhile, early creep rate deceased. Similar results applied to the reduction of sand rate and water-cement ratio. Based on creep prediction models both at home and abroad, hyperbolic power function and exponential function model were put forward, taking the influence of material parameter and environmental factors on shrinkage and creep into consideration. In accordance with the model, concrete creep formula was given out and would provide a relatively scientific basis for practical prediction of concrete creep.

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Periodical:

Applied Mechanics and Materials (Volumes 368-370)

Pages:

1487-1494

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.368-370.1487

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Online since:

August 2013

Authors:

Fei Guo, Hong Gen Qin, Peng Fei Cao, Guan Guo Liu, Yun Sheng Zhang

Keywords:

Creep, High-Performance Concrete (HPC), Model, Shrinkage

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