Abstract
Based on accelerated carbonation test, 1D, 2D and 3D carbonation of high performance concrete with different fly ash contents (0%, 15%, 20%, 40%, 60%) were studied. The interaction coefficients of 2D and 3D carbonation are defined. The time-dependent coefficient n of carbon dioxide diffusion and the interaction coefficients K of 2D and 3D carbonation are analyzed. The mathematical model which includes n and K is deduced. The experiments indicate that 2D and 3D carbonation have obvious interaction. Interaction coefficients obey the attenuation function through time t. The mathematical model of 2D and 3D carbonation life prediction based on Fick scattering law can be solved by Fourier expansion. The life prediction of concrete of Sutong Bridge beam shows that the 1D, 2D, 3D carbonation prediction life are 1595 a, 882 a and 758 a, respectively, 2D and 3D carbonation life predicted are reduced clearly.
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References
Jin Weiliang, Zhao Yuxi. Durability of Concrete Structures. Beijing: Science Press, 2002, 16–172 (in Chinese)
Zhang Yu, Jiang Lixue. An Introduction to Durability of Concrete Structures. Shanghai: Shanghai Scientific and Technical Publishers, 2003, 5–8 (in Chinese)
Cengiz D A. Accelerated carbonation and testing concrete made with fly ash. Construction and Building Materials, 2003, 17(3): 147–152
Khan M I, Lynsdce C J. Strength, permeability and carbonation of high performance concrete. Cement and Concrete Research, 2002, 32(1): 123–131
Roy S K, Poh K B, Northwood D O. Durability of concrete accelerated carbonation and weathering studies. Building and Environment, 1999, 34(5): 597–606
Qin Honggen, Sun Wei, Pan Ganghua, et al. A study on the performance of high performance fly ash concrete in the bridge construction. Fly Ash Comprehensive Utilization, 2002, (5): 23–25 (in Chinese)
Jin Zuquan, Sun Wei, Zhang Yunsheng, et al. Multi-factor service life prediction model for concrete with fly ash. Journal of Southeast University (Natural Science Edition), 2005, 35(sup(1)): 149–154 (in Chinese)
Qu Wenjun. Finite element analysis about concrete carbonization depth at the section. Journal of Tongji University (Natural Science), 1999, 27(4): 412–416 (in Chinese)
Papadakis V G, Vayenas C G. Experimental investigation and mathematical modeling of the concrete carbonation problem. Chemical Engineering Science, 1991, 46: 1333–1338
Chen Shudong, Sun Wei, Zhang Yunsheng, et al. Research on 2 dimensions, 3 dimensions carbonation of concrete. Concrete, 2006, 1: 1–4 (in Chinese)
Saetta A V, Schrefler B A, Vitaliani R V. 2-D model for carbonation and moisture/heat flow in porous materials. Cement and Concrete Research, 1995, 25: 1703–1712
Wu Li, Bo Guixian. influencing factors of concrete carbonationand prediction model of carbonation depth. Technique of Seepage Control, 2002, 8(3): 10–12 (in Chinese)
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Translated from Journal of Southeast University (Natural Science Edition), 2007, 37(4): 645–650 [译自: 东南大学学报(自然科学版)]
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Chen, S., Sun, W., Zhang, Y. et al. Carbonation depth prediction of fly ash concrete subjected to 2-and 3-dimensional CO2 attack. Front. Archit. Civ. Eng. China 2, 395–400 (2008). https://doi.org/10.1007/s11709-008-0046-2
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DOI: https://doi.org/10.1007/s11709-008-0046-2