Air-void-affected zone in concrete beam under four-point bending fracture
Abstract
A series of numerical simulations were performed on prenotched four-point bending (FPB) concrete beams containing air voids of different sizes and locations by using the finite element method combined with the cohesive crack model. The void-affected zone was proposed for characterizing the effect of a void on a fracture, and its size was determined by moving an air void horizontally until the crack path changed. As a function of air void location and size, the dimensionless affected-zone radius was fitted according to the numerical results. Finally, the fracture processes of the pre-notched FPB concrete beams with randomly distributed voids were simulated numerically, and the affected-zone radius was used to explain the choice of crack paths to verify the prediction. It was found that the prediction is accurate for an isolated affected zone and is roughly approximate for an overlapped one.
Keyword : concrete, air void, fracture, affected-zone, cohesive model, four-point bending
How to Cite
Zhang, C., Yang, X., & Gao, H. (2018). Air-void-affected zone in concrete beam under four-point bending fracture. Journal of Civil Engineering and Management, 24(2), 130-137. https://doi.org/10.3846/jcem.2018.456
This work is licensed under a Creative Commons Attribution 4.0 International License.
References
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Başyiğit, C.; Çomak, B.; Kılınçarslan, Ş.; Serkan Üncü, İ. 2012. Assessment of concrete compressive strength by image processing technique, Construction and Building Materials 37: 526–532. https://doi.org/10.1016/j.conbuildmat.2012.07.055
Dong, W.; Wu, Z.; Zhou, X.; Dong, L.; Kastiukas, G. 2017. FPZ evolution of mixed mode fracture in concrete: Experimental and numerical, Engineering Failure Analysis 75: 54–70. https://doi.org/10.1016/j.engfailanal.2017.01.017
Dong, W.; Wu, Z.; Zhou, X.; Tan, Y. 2016. Experimental studies on void detection in concrete-filled steel tubes using ultrasound, Construction and Building Materials 128: 154–162. https://doi.org/10.1016/j.conbuildmat.2016.10.061
Garbacz, A.; Piotrowski, T.; Courard, L.; Kwaśniewski, L. 2017. On the evaluation of interface quality in concrete repair system by means of impact-echo signal analysis, Construction and Building Materials 134: 311–323. https://doi.org/10.1016/j.conbuildmat.2016.12.064
Guo, S.; Dai, Q.; Sun, X.; Sun, Y. 2016. Ultrasonic scattering measurement of air void size distribution in hardened concrete samples, Construction and Building Materials 113: 415–422. https://doi.org/10.1016/j.conbuildmat.2016.03.051
Hassani, B.; Hinton, E. 1998. A review of homogenization and topology optimization I–homogenization theory for media with periodic structure, Computers & Structures 69: 707–717. https://doi.org/10.1016/S0045-7949(98)00131-X
Hu, J.; Liu, P.; Wang, D.; Oeser, M.; Tan, Y. 2016. Investigation on fatigue damage of asphalt mixture with different air-voids using microstructural analysis, Construction and Building Materials 125: 936–945. https://doi.org/10.1016/j.conbuildmat.2016.08.138
Huang, Y.; Yan, D.; Yang, Z.; Liu, G. 2016. 2D and 3D homogenization and fracture analysis of concrete based on in-situ X-ray Computed Tomography images and Monte Carlo simulations, Engineering Fracture Mechanics 163: 37–54. https://doi.org/10.1016/j.engfracmech.2016.06.018
Mahoutian, M.; Lubell, A. S.; Bindiganavile, V. S. 2015. Effect of powdered activated carbon on the air void characteristics of concrete containing fly ash, Construction and Building Materials 80: 84–91. https://doi.org/10.1016/j.conbuildmat.2015.01.019
Misseroni, D.; Movchan, A. B.; Movchan, N. V.; Bigoni, D. 2015. Experimental and analytical insights on fracture trajectories in brittle materials with voids, International Journal of Solids and Structures 63: 219–225. https://doi.org/10.1016/j.ijsolstr.2015.03.001
Nambiar, E. K. K.; Ramamurthy, K. 2007. Air-void characterisation of foam concrete, Cement and Concrete Research 37: 221–230. https://doi.org/10.1016/j.cemconres.2006.10.009
Nguyen, T. T.; Bui, H. H.; Ngo, T. D.; Nguyen, G. D. 2017. Experimental and numerical investigation of influence of air-voids on the compressive behaviour of foamed concrete, Materials & Design 130: 103–119. https://doi.org/10.1016/j.matdes.2017.05.054
Qin, Y.; Chai, J.; Dang, F. 2013. Improved random aggregate model for numerical simulations of concrete engineering simulations of concrete engineering, Journal of Civil Engineering and Management 19: 285–295. https://doi.org/10.3846/13923730.2012.760481
Qin, Y.; Chai, J.; Ding, W.; Dang, F.; Lei, M.; Xu, Z. 2016. A quasi real-time approach to investigating the damage and fracture process in plain concrete by X-ray tomography, Journal of Civil Engineering and Management 22: 792–799. https://doi.org/10.3846/13923730.2014.914089
Rehder, B.; Banh, K.; Neithalath, N. 2014. Fracture behavior of pervious concretes: The effects of pore structure and fibers, Engineering Fracture Mechanics 118: 1–16. https://doi.org/10.1016/j.engfracmech.2014.01.015
Ren, J.; Sun, L. 2017. Characterizing air void effect on fracture of asphalt concrete at low-temperature using discrete element method, Engineering Fracture Mechanics 170: 23–43. https://doi.org/10.1016/j.engfracmech.2016.11.030
Ren, W.; Yang, Z.; Sharma, R.; Zhang, C.; Withers, P. J. 2015. Two-dimensional X-ray CT image based meso-scale fracture modelling of concrete, Engineering Fracture Mechanics 133: 24–39. https://doi.org/10.1016/j.engfracmech.2014.10.016
Valentini, M.; Serkov, S. K.; Bigoni, D.; Movchan, A. B. 1999. Crack propagation in a brittle elastic material with defects, Journal of Applied Mechanics 66: 79–86. https://doi.org/10.1115/1.2789172
Wang, X.; Yang, Z. J.; Yates, J. R.; Jivkov, A. P.; Zhang, C. 2015. Monte Carlo simulations of mesoscale fracture modelling of concrete with random aggregates and pores, Construction and Building Materials 75: 35–45. https://doi.org/10.1016/j.conbuildmat.2014.09.069
Wang, X.; Zhang, M.; Jivkov, A. P. 2016. Computational technology for analysis of 3D meso-structure effects on damage and failure of concrete, International Journal of Solids and Structures 80: 310–333. https://doi.org/10.1016/j.ijsolstr.2015.11.018
Xie, Y.; Corr, D. J.; Jin, F.; Zhou, H.; Shah, S. P. 2015. Experimental study of the interfacial transition zone (ITZ) of model rock-filled concrete (RFC), Cement and Concrete Composites 55: 223–231. https://doi.org/10.1016/j.cemconcomp.2014.09.002
Xu, Y.; Chen, S. 2016. A method for modeling the damage behavior of concrete with a three-phase mesostructure. Construction and Building Materials 102: 26–38. https://doi.org/10.1016/j.conbuildmat.2015.10.151
Yang, Z. J.; Su, X. T.; Chen, J. F.; Liu, G. H. 2009. Monte Carlo simulation of complex cohesive fracture in random heterogeneous quasi-brittle materials, International Journal of Solids and Structures 46: 3222–3234. https://doi.org/10.1016/j.ijsolstr.2009.04.013
Yin, A.; Yang, X.; Gao, H.; Zhu, H. 2012. Tensile fracture simulation of random heterogeneous asphalt mixture with cohesive crack model, Engineering Fracture Mechanics 92: 40–55. https://doi.org/10.1016/j.engfracmech.2012.05.016
Yin, A.; Yang, X.; Zeng, G.; Gao, H. 2014. Fracture simulation of pre-cracked heterogeneous asphalt mixture beam with movable three-point bending load, Construction and Building Materials 65: 232–242. https://doi.org/10.1016/j.conbuildmat.2014.04.119
Yin, A.; Yang, X.; Zeng, G.; Gao, H. 2015. Experimental and numerical investigation of fracture behavior of asphalt mixture under direct shear loading, Construction and Building Materials 86: 21–32. https://doi.org/10.1016/j.conbuildmat.2015.03.099
Zhang, C.; Yang, X.; Gao, H.; Zhu, H. 2016. Heterogeneous fracture simulation of three-point bending plain-concrete beam with double notches, Acta Mechanica Solida Sinica 29: 232–244. https://doi.org/10.1016/S0894-9166(16)30158-6