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http://dx.doi.org/10.12989/cac.2019.23.3.161

A numerical method for estimating the elastic modulus of recycled concrete  

Zhou, Xinzhu (School of Civil Engineering and Architecture, Zhejiang University of Technology)
Zheng, Jianjun (School of Civil Engineering and Architecture, Zhejiang University of Technology)
Chen, Ting (School of Civil Engineering and Architecture, Zhejiang University of Technology)
Zhang, Jian (School of Civil Engineering and Architecture, Zhejiang University of Technology)
Wang, Chuanyang (School of Civil Engineering and Architecture, Zhejiang University of Technology)
Wu, Jiefeng (School of Civil Engineering and Architecture, Zhejiang University of Technology)
Publication Information
Computers and Concrete / v.23, no.3, 2019 , pp. 161-170 More about this Journal
Abstract
This paper aims at presenting a numerical method for estimating the elastic modulus of recycled concrete with crushed aggregates. In the method, polygonal aggregates following a given sieve curve are generated, and placed into a square simulation element with the aid of the periodic boundary condition and the overlap criterion of two polygonal aggregates. The mesostructure of recycled concrete is reconstructed by embedding an old interfacial transition zone (ITZ) layer inside each recycled aggregate and by coating all the aggregates with a new ITZ layer. The square simulation element is discretized into a regular grid and a representative point is selected from each sub-element. The iterative method is combined with the fast Fourier transform to evaluate the elastic modulus of recycled concrete. After the validity of the numerical method is verified with experimental results, a sensitivity analysis is conducted to evaluate the effects of key factors on the elastic modulus of recycled concrete. Numerical results show that the elastic modulus of recycled concrete increases with the increase of the total aggregate content and the elastic moduli of old and new ITZ but decreases with increasing the replacement ratio of recycled aggregate and the thicknesses of old and new ITZ. It is also shown that, for a replacement ratio of recycled aggregate smaller than 0.3, the elastic modulus of recycled concrete is reduced by no more than 10%.
Keywords
recycled concrete; elastic modulus; recycled aggregate; fast Fourier transform; crushed aggregate;
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Times Cited By KSCI : 5  (Citation Analysis)
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1 Gholampour, A., Gandomi, A.H. and Ozbakkaloglu, T. (2017), "New formulations for mechanical properties of recycled aggregate concrete using gene expression programming", Constr. Build. Mater., 130, 122-145.   DOI
2 Gholamreza, A., Ehsan, J. and Zahra, K. (2016), "Predicting of compressive strength of recycled aggregate concrete by genetic programming", Comput. Concrete, 18(2), 155-164.   DOI
3 Golafshni, E.M. and Behnood, A. (2018), "Application of soft computing methods for predicting the elastic modulus of recycled aggregate concrete", J. Clean. Prod., 176, 1163-1176.   DOI
4 Hirsh, T.J. (1962), "Modulus of elasticity of concrete affected by elastic moduli of cement paste matrix and aggregate", J. Am. Concr. Inst., 59(3), 427-452.
5 Kou, S.C. and Poon, C.S. (2008), "Mechanical properties of 5-year-old concrete prepared with recycled aggregates obtained from three different sources", Mag. Concr. Res., 60(1), 57-64.   DOI
6 Li, B.D. (2012), "Mesoscopic analysis and numerical simulation of mechanical properties for recycled concrete composite materials with interface", Master Dissertation, South China University of Technology, Guangzhou, China. (in Chinese)
7 Liang, J.F., Yang, Z.P., Yi, P.H. and Wang, J.B. (2015) "Mechanical properties of recycled fine glass aggregate concrete under uniaxial loading", Comput. Concrete, 16(2), 275-285.   DOI
8 Liu, Q. (2010), "The experimental study and lattice model simulation on the failure mechanism of recycled concrete", Ph.D. Dissertation, Tongji University, Shanghai, China. (in Chinese)
9 Mellmann, G., Meinhold, U. and Maultzsch, M. (1999), "Processed concrete rubble for the reuse as aggregate", Proceedings of the International Seminar on Exploiting Wastes in Concrete, Dundee, UK, September.
10 Moulinec, H. and Suquet, P. (1998), "A numerical method for computing the overall response of nonlinear composites with complex microstructure", Comput. Meth. Appl. Mech. Eng., 157(1-2), 69-94.   DOI
11 Murali, G., Indhumathi, T., Karthikeyan, K. and Ramkumar, V.R. (2018), "Analysis of flexural fatigue failure of concrete made with 100% coarse recycled and natural aggregates", Comput. Concrete, 21(3), 291-298.   DOI
12 Noguchi, T., Park, W.J., Oh, D.Y. and Shin, S.H. (2015), "Modulus of elasticity of recycled aggregate concrete", Mag. Concrete Res., 67(11), 585-591.   DOI
13 Rao, K.R., Kim, D.N. and Hwang, J.J. (2010), Fast Fourier Transforms: Algorithms and Applications, Springer, Dordrecht, the Netherlands.
14 Ravindrarajah, R.S. and Tam, C.T. (1985), "Properties of concrete made with crushed concrete as coarse aggregate", Mag. Concrete Res., 37(130), 29-38.   DOI
15 Scrivener, K.L. and Nemati, K.M. (1996), "The percolation of pore space in the cement paste/aggregate interfacial zone of concrete", Cement Concrete Res., 26(1), 35-40.   DOI
16 Stock, A.F., Hannant, D.J. and Williams, R.I.T. (1979), "The effect of aggregate concentration upon the strength and modulus of elasticity of concrete", Mag. Concrete Res., 31(113), 225-234.   DOI
17 Zheng, J.J., Li, C.Q. and Zhou, X.Z. (2005), "Thickness of interfacial transition zone and cement content profiles around aggregates", Mag. Concrete Res., 57(7), 397-406.   DOI
18 Zheng, J.J., Li, C.Q. and Zhou, X.Z. (2006), "An analytical method for prediction of the elastic modulus of concrete", Mag. Concrete Res., 58(10), 665-673.   DOI
19 Zheng, J.J., Zhou, X.Z., Wu, Z.M. and Jin, X.Y. (2011), "Numerical method for predicting Young's modulus of concrete with aggregate shape effect", J. Mater. Civil Eng., 23(10), 1609-1615.   DOI
20 Silva, R.V., de Brito, J. and Dhir, R.K. (2016), "Establishing a relationship between modulus of elasticity and compressive strength of recycled aggregate concrete", J. Clean. Prod., 112, 2171-2186.   DOI
21 Torquato, S. (2002), Random Heterogenerous Materials: Microstructure and Macroscopic Properties, Springer, New York, USA.
22 Wang, H.L. (2013), "Study on elastic modulus of recycled aggregate concrete", J. Dalian Univ., 34(3), 45-49. (in Chinese)
23 Xiao, J.Z., Li, W.G., Sun, Z.H., Lange, D.A. and Shah, S.P. (2013), "Properties of interfacial transition zones in recycled aggregate concrete tested by nanoindentation", Cement Concrete Compos., 37(3), 276-292.   DOI
24 Wang, Z.W., Kwan, A.K.W. and Chan, H.C. (1999), "Mesoscopic study of concrete I: generation of random aggregate structure and finite element mesh", Comput. Struct., 70(5), 533-544.   DOI
25 Wardeh, G., Ghorbel, E. and Gomart, H. (2015), "Mix design and properties of recycled aggregate concretes: applicability of eurocode 2", Int. J. Concrete Struct. Mater., 9(1), 1-20.   DOI
26 Xiao, J.Z., Li, J.B. and Zhang, C. (2006),"On relationships between the mechanical properties of recycled aggregate concrete: an overview", Mater. Struct., 39(6), 655-664.   DOI
27 Zheng, J.J., Li, C.Q. and Zhao, L.Y. (2003), "Simulation of twodimensional aggregate distribution with wall effect", J. Mater. Civil Eng., 15(5), 506-510.   DOI
28 Chen, X.D., Shen, N., Tian, H.X., Fan, X.Q. and Lu, J. (2018), "Mechanical properties of pervious concrete with recycled aggregate", Comput. Concrete, 21(6), 621-635.
29 Corinaldesi, V. (2010), "Mechanical and elastic behavior of concretes made of recycled-concrete coarse aggregates", Constr. Build. Mater., 24(9), 1616-1620.   DOI
30 Dapena, E., Alaejos, P., Lobet, A. and Perez, D. (2011), "Effect of recycled sand content on characteristics of mortars and concretes", J. Mater. Civil Eng., 23(4), 414-422.   DOI
31 Dillmann, R. (1998), "Concrete with recycled concrete aggregate", Proceedings of the International Symposium on Sustainable Construction: Use of Recycled Concrete Aggregate, London, UK, January.
32 de Oliveira, M.B. and Vazquez, E. (1996), "The influence of retained moisture in aggregates from recycling on the properties of new hardened concrete", Waste Manage., 16(1-3), 113-117.   DOI
33 Dhir, R.K., Limbachiya, M.C. and Leelawat, T. (1999), "Suitability of recycled aggregate for use in BS 5328 designated mixes", Proc. Inst. Civ. Eng. Struct. Build., 134(3), 257-274.   DOI
34 Dilbas, H., Cakir, O . and Simsek, M. (2017), "Recycled aggregate concretes (RACs) for structural use: an evaluation on elasticity modulus and energy capacities", Int. J. Civil Eng., 15(2), 1-15.   DOI
35 Du, X.L. and Jin, L. (2012), "Research on effective mechanical properties of concrete composite material with pores", Eng. Mech., 29(8), 70-77. (in Chinese)
36 Duan, Z.H. and Poon, C.S. (2014), "Factors affecting the properties of recycled concrete by using neural networks", Comput. Concrete, 14(5), 547-561.   DOI
37 Duan, Z.H., Kou, S.C. and Poon, C.S. (2013), "Using artificial neural networks for predicting the elastic modulus of recycled aggregate concrete", Constr. Build. Mater., 44(7), 524-532.   DOI
38 George, E.A., Richard, A. and Ranjan, R. (1999), Special Function, Cambridge University Press, Cambridge, UK.