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http://dx.doi.org/10.9712/KASS.2013.13.4.067

Aging Coefficient Formula of Reinforced Concrete Members under Axial Compression  

Yoo, Jae-Wook (Hanyang University, Department of Architectural Engineering)
Yu, Eun-Jong (Hanyang University, Department of Architectural Engineering)
Publication Information
Journal of Korean Association for Spatial Structures / v.13, no.4, 2013 , pp. 67-74 More about this Journal
Abstract
The Age-adjusted effective Modulus Method(AEMM) is one of the methods adopted for the construction stage analysis of concrete structures. The AEMM uses the aging factor to consider the effects of the varying concrete stress. In the aspects of computation time and the accuracy of the results, the AEMM is considered as one of most appropriate methods for construction stage analysis of tall building structures. Previous researches proposed appropriate values of the aging factor in the forms of graphs or using very simple equations. In this paper, an equation for estimating the aging factor as a function of rebar ratio in the section, compressive strength of concrete, notional member dimension, and age of concrete at the load application. The validity of aging factor proposed in this paper were examined by the comparison with the results of step-by step method.
Keywords
AEMM; Aging factor; Construction stage analysis; SSM;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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1 Neville, Adam M., Walter H. Dilger, and Jeffery J. Brooks. Creep of plain and structural concrete. London and New York: Construction Press, 1983.
2 Gilbert, Raymond Ian, and Gianluca Ranzi. Time-dependent behaviour of concrete structures. Taylor & Francis, 2010.
3 Jang Sung-Woo, Song Hwa-Cheol, Sho Kwang-Ho. "Column Shortening Prediction of Concrete Filled Tubes using Monte Carlo Method." Journal of the Korean Association for Spatial Structures. vol.10 No.1: 75-84, 2010.   과학기술학회마을
4 Sassone, Mario, and Mario Alberto Chiorino. "Design aids for the evaluation of creep induced structural effects." Shrinkage and Creep of Concrete (2005): 239-259.
5 Gilbert, Raymond Ian. Time effects in concrete structures. Developments in civil engineering 23, 1988.
6 Chiorino, M.A. and G. Lacidogna (1991), Approximate values of the aging coefficient for the age-adjusted effective modulus method in linear analysis of creep structures, Report No. 31, Department of Structural Engineering, Politecnico di Torino, Turin, Italy.
7 Choi Na-Rae, Kim Jin-Keun. Development of Model Equations of Aging Coefficient for the Slab under Flexural Moment and Axial Force. Journal of the architectural institute of korea(structure & construction), vol.28 No.9: 25-32, 2012.   과학기술학회마을
8 Ghali, Amin, Renaud Favre, and Mamdouh Elbadry. Concrete Structures: Stresses and Deformations: Analysis and Design for Serviceability. Taylor & Francis, 2002.
9 KCI Structural Concrete Design Code 2012, the Korea Concrete Institute.
10 BAZANT, Zdenek P. Prediction of concrete creep effects using age-adjusted effective modulus method. ACI Journal, 1972, 69.4: 212-217.