A study on the effects of the fractal characteristics of aggregates on the mechanical behavior of cemented sand and gravel





Aggregate, Concrete, Mixture proportion, Modulus of elasticity, Mechanical properties


Owing to complex aspects of cemented sand and gravel (CSG), such as included unscreened aggregates, CSG properties differ from those of ordinary concrete. Fractal theory is introduced to study the effects of aggregate characteristics on CSG properties, quantifying aggregate gradation and shape. Numerical simulation and analyses show that: (1) improved aggregate gradation decreases the gradation fractal dimension and increases the CSG peak stress and elastic modulus; (2) more irregularly shaped aggregates increase the shape fractal dimension and decrease the CSG peak stress and elastic modulus; (3) the relationship quantified between aggregate characteristics and CSG mechanical properties provides a theoretical basis for aggregate allocation in engineering design and construction. Mixing artificial aggregates can improve aggregate gradation but reduces CSG performance. Appropriately blending artificial and on-site aggregates achieves optimal CSG performance; in this study, this is attained using 20% artificial aggregates added under standard gradation.


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Feng, W. (2013) Research on characteristics of damming materials for cemented gravel dam and engineering application, China Institute of Water Resources and Hydropower Research, Beijing, China.

González-Fonteboa, B.; Seara-Paz, S.; de Brito, J.; González-Taboada, I.; Martínez-Abella, F.; Vasco-Silva, R. (2018) Recycled concrete with coarse recycled aggregate. An overview and analysis. Mater. Construcc. 68 [330], e151. https://doi.org/10.3989/mc.2018.13317

Shafigh, P.; Asadi, I.; Akhiani, A.R.; Mahyuddin, N.B.; Hashemi, M. (2020) Thermal properties of cement mortar with different mix proportions. Mater. Construcc. 70 [339], e224. . https://doi.org/10.3989/mc.2020.09219

Jin, L.; Yu, W.; Du, X.; Yang, W. (2020) Meso-scale simulations of size effect on concrete dyna-mic splitting tensile strength: Influence of aggregate content and maximum aggregate size. Eng. Fract. Mech. 230, 106979. https://doi.org/10.1016/j.engfracmech.2020.106979

Huang, X.F. (2010) Effect of coarse aggregate shape on concrete physical and mechanical properties, Zhejiang University of Technology, Zhengjiang, China (2010).

Guo, D. (2016) Research on the main technical requirements of high-quality concrete aggregates, Beijing University of Architecture, Beijing, China (2016).

Sánchez-Roldán, Z.; Valverde-Palacios, I.; Valverde-Espinosa, I.; Martín-Morales, M. (2020) Microstructural analysis of concretes manufactured with recycled coarse aggregates pre-soaked using different methods. Mater. Construcc. 70 [339], e228. https://doi.org/10.3989/mc.2020.16919

Zhang, Y.; Yan, L.; Wang, S.; Xu, M. (2019) Impact of twisting high-performance polyethylene fibre bundle reinforcements on the mechanical characteristics of high-strength concrete. Mater. Construcc. 69 [334], e184. https://doi.org/10.3989/mc.2019.01418

Xiong, X.Y.; Xiao, Q.S. (2019) A unified meso-scale simulation method for concrete under both tension and compression based on Cohesive Zone Model. J. Hydraul. Eng. 50, 448-462.

Wang, X.F.; Yang, Z.J.; Yates, J.R.; Jivkov, A.P., Zhang, Ch.. (2015) Monte Carlo simulations of mesoscale fracture modelling of concrete with random aggregates and pores. Constr. Build. Mater. 75, 35-45. https://doi.org/10.1016/j.matdes.2015.02.015

Zheng, J.C.; Zhu, L.; Peng, G. (2013) Numerical simulation of concrete axial tensile performance based on mesomechanics. Engineering Journal of Wuhan University. 46, 188-193.

Hou, Y.X.; Wang, L.C. (2009) Generating method of random polygon aggregate in mesoscopic simulation of concrete. J. Archit. Civil. Eng. 26, 59-65.

Yu, B.; Li, J. (2001) Some fractal characters of porous media. Fractals. 9 [3], 365-372. https://doi.org/10.1142/S0218348X01000804

Zhang, J.X.; Jin, S.S. (2013) Micropore structure of cement concrete and its function, Science Press, Beijing, China.

Gao, S.; Guo, Y.X.; Wu, B.Q. (2019) Research on Fractal characteristics of the recycled fi-ne aggregate. Concrete. 6, 78-83.

Hu, H-x.; Zhang, Q.; Ding, D-h. (2010) Study on the mechanical properties of the concrete materials based on fractal theory. Concrete. 6, 31-33,36.

Li, W.T.; Sun, H-q.; Xing, J. (2003) Theory of fractal applied to concrete study. Journal of Hebei University of Technology. 32, 13-16.

Mandelbrot, B.B. (1982) The fractal geometry of nature. W. H. Freeman, New York.

Chang, Y.J. (2018) Fractal characteristics and the application for asphalt mixture grading with the curve models. Journal of Heilongjiang Institute of Technology. 32, 6-10.

Bai, W.; Peng, G. (2007) Monte-Carlo method aggregate random structures for concretes by Ansys, Journal of Shihezi University (Natural Science). 25, 504-507.

Rong, M.D.; Guo, Z.Y.; Wu, X.Q. (2017) Ansys implementation of two-dimensional and three-dimensional random aggregate model generated by Monte Carlo method. Construction Machinery Technology and Management. 30, 71-73.

Li, Z.W. (2007) Monte Carlo simulation of related random variables. Stat. Decis. 5, 9-10.

Schlangen, E.; van Mier, J.G.M. (1992) Simple lattice model for numerical simulation of fracture of concrete materials and structures. Mater. Struct. 25, 534-542. https://doi.org/10.1007/BF02472449

Guo, L.X.; Zhong, L.; Zheng, C.Y. (2019) Damage and destruction research of recycled concrete with waste brick based on modified random aggregate model. J. Basic Eng. 27, 1390-1398.

Xiao, J.Z.; Du, J.T. (2008) Complete stress-strain curve of concrete with different recycle coarse aggregates under uniaxial compression. J. Build. Mater. 11, 1445-1449.

Peng, Y.J.; Wang, Y.H. (2006) Numerical analyses for fracture process and failure mechanism of concrete on meso-level. Chin. Saf. Sci. J. 16, 110-114.

Shang, X.Y.; Yang, J.W.; Li, J.S. (2020) Fractal characteristics of meso-failure cracks in re-cycled coarse aggregate concrete based on CT image. Acta. Mater. Compos. Sin.

Prokopski, G.; Halbiniak, J. (2000) Interfacial transition zone in cementitious materials. Cem. Concr. Res. 30 [4], 579-583. https://doi.org/10.1016/S0008-8846(00)00210-6

Xu, Y.S. (2017) Research on mesoscopic model of concrete considering aggregate shape, Southeast University, Nanjing.

Guo, L.; Zhang, Y.; Zhong, L.; Wang, M.; Zhu, X. (2020) Study on macroscopic and mesoscopic mechanical behavior of CSG based on inversion of mesoscopic material parameters. Sci. Eng. Compos. Mater. 27, 65-72. https://doi.org/10.1515/secm-2020-0007

Ashraf, W.B.; Noor, M.A. (2011) Performance-evaluation of concrete properties for different combined aggregate gradation approaches. Proce. Eng. 14, 2627-2634. https://doi.org/10.1016/j.proeng.2011.07.330

Du, C-B.; Sun, L-G. (2007) Numerical simulation of aggregate shapes of two-dimensional concrete and its application. J. Aerospace Eng. 20 [3], 172-178. https://doi.org/10.1061/(ASCE)0893-1321(2007)20:3(172)

Du, C-B.; Sun, L-G.; Jiang, S.Y. (2013) Numerical simulation of aggregate shapes of three-dimensional concrete and its application. J. Aerospace Eng. 26 [3], 515-527. https://doi.org/10.1061/(ASCE)AS.1943-5525.0000181

Cui, W.; Yan, W-s.; Song, H-f.; Wu, W-l. (2020) DEM simulation of SCC flow in L-Box set-up: Influence of coarse aggregate shape on SCC flowability. Cem. Concr. Comp. 109, 103558. https://doi.org/10.1016/j.cemconcomp.2020.103558

Tian, M.Y. (2019) Numerical calculation of concrete uniaxial mechanical properties based on mesoscale, Taiyuan University of Technology, Taiyuan, China.

Chen, P.; Chen, X.; Wang, Y.; Wang, P. (2020) Preliminary study on the upcycle of non-structural construction and demolition waste for waste cleaning. Mater. Construcc. 70 [338], e220. https://doi.org/10.3989/mc.2020.13819. https://doi.org/10.3989/mc.2020.13819

Chen, H.Q.; Ma, H.F.; Li, Y.C. (2007) Influence of random aggregate shapes on flexural strength of dam concrete. J. Chin. Inst. Water. Resour. Hydr. Res. 04, 241-246.



How to Cite

Guo, L. ., Li, S. ., Zhong, L. ., Guo, L. ., Wang, L. ., Zhang, F. ., Zhang, Y. ., & Wang, M. . (2021). A study on the effects of the fractal characteristics of aggregates on the mechanical behavior of cemented sand and gravel. Materiales De Construcción, 71(342), e250. https://doi.org/10.3989/mc.2021.13020



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