Numerical investigation of the influence of casting techniques on fiber orientation distribution in ECC

Abstract

Engineered cementitious composites (ECC), also known as bendable concrete, were developed based on engineering the interactions between fibers and cementitious matrix. The orientation of fibers, in this regard, is one of the major factors influencing the ductile behavior of this material. In this study, fiber orientation distributions in ECC beams influenced by different casting techniques are evaluated via numerical modeling of the casting process. Two casting directions and two casting positions of the funnel outlet with beam specimens are modeled using a particle-based smoothed particle hydrodynamics (SPH) method. In this SPH approach, fresh mortar and fiber are discretized by separated mortar and fiber particles, which smoothly interact in the computational domain of SPH. The movement of fiber particles is monitored during the casting simulation. Then, the fiber orientations at different sections of specimens are determined after the fresh ECC stops flowing in the formwork. The simulation results show a significant impact of the casting direction on fiber orientation distributions along the longitudinal wall of beams, which eventually influence the flexural strength of beams. In addition, casting positions show negligible influences on the orientation distribution of fibers in the short ECC beam, except under the pouring position.

Graphical abstract

Keywords

ECC / fiber orientation distribution / casting direction / casting position

References

[1] Li V C. On engineered cementitious composites (ECC). Journal of Advanced Concrete Technology, 2003, 1(3): 215–230

[2] Li V C. Tailoring ECC for special attributes: A review. International Journal of Concrete Structures and Materials, 2012, 6(3): 135–144

[3] Li V C, Wu C, Wang S, Ogawa A, Saito T. Interface tailoring for strain-hardening polyvinyl alcohol-engineered cementitious composite (PVA-ECC). Materials Journal, 2002, 99(5): 463–472

[4] Yang E H, Wang S, Yang Y, Li V C. Fiber-bridging constitutive law of engineered cementitious composites. Journal of Advanced Concrete Technology, 2008, 6(1): 181–193

[5] Kanakubo T, Miyaguchi M, Asano K. Influence of fiber orientation on bridging performance of polyvinyl alcohol fiber-reinforced cementitious composite. ACI Materials Journal, 2016, 113(2): 131–141

[6] Ranade R, Stults M, Lee B, Li V. High Performance Fiber Reinforced Cement Composites 6. Berlin: Springer, 2012, 107–114

[7] Li M, Li V C. Rheology, fiber dispersion, and robust properties of engineered cementitious composites. Materials and Structures, 2013, 46(3): 405–420

[8] Ouyang C, Pacios A, Shah S. Pullout of inclined fibers from cementitious matrix. Journal of Engineering Mechanics, 1994, 120(12): 2641–2659

[9] Leung C K, Ybanez N. Pullout of inclined flexible fiber in cementitious composite. Journal of Engineering Mechanics, 1997, 123(3): 239–246

[10] Ding C, Guo L, Chen B. Orientation distribution of polyvinyl alcohol fibers and its influence on bridging capacity and mechanical performances for high ductility cementitious composites. Construction & Building Materials, 2020, 247: 118491

[11] Lu C, Leung C K. Theoretical evaluation of fiber orientation and its effects on mechanical properties in Engineered Cementitious Composites (ECC) with various thicknesses. Cement and Concrete Research, 2017, 95: 240–246

[12] Zhou B, Uchida Y. Influence of flowability, casting time and formwork geometry on fiber orientation and mechanical properties of UHPFRC. Cement and Concrete Research, 2017, 95: 164–177

[13] Ferrara L, Ozyurt N, Di Prisco M. High mechanical performance of fibre reinforced cementitious composites: The role of “casting-flow induced” fibre orientation. Materials and Structures, 2011, 44(1): 109–128

[14] Huang H, Su A, Gao X, Yang Y. Influence of formwork wall effect on fiber orientation of UHPC with two casting methods. Construction & Building Materials, 2019, 215: 310–320

[15] Qiao Z, Pan Z, Xue W, Meng S. Experimental study on flexural behavior of ECC/RC composite beams with U-shaped ECC permanent formwork. Frontiers of Structural and Civil Engineering, 2019, 13(5): 1271–1287

[16] Abbas A A, Arna ’Ot F H, Abid S R, Özakça M. Flexural behavior of ECC hollow beams incorporating different synthetic fibers. Frontiers of Structural and Civil Engineering, 2021, 15(2): 399–411

[17] Deeb R, Karihaloo B, Kulasegaram S. Reorientation of short steel fibres during the flow of self-compacting concrete mix and determination of the fibre orientation factor. Cement and Concrete Research, 2014, 56: 112–120

[18] Huang H, Gao X, Li Y, Su A. SPH simulation and experimental investigation of fiber orientation in UHPC beams with different placements. Construction & Building Materials, 2020, 233: 117372

[19] Bi J, Bao C, Xu D, Guan J, Cheng W. Numerical simulation of the distribution and orientation of steel fibres in the SCC. Magazine of Concrete Research, 2017, 69(16): 811–822

[20] Thanh H T, Li J, Zhang Y X. Numerical modelling of the flow of self-consolidating engineered cementitious composites using smoothed particle hydrodynamics. Construction & Building Materials, 2019, 211: 109–119

[21] Deeb R, Kulasegaram S, Karihaloo B L. 3D modelling of the flow of self-compacting concrete with or without steel fibres. Part II: L-box test and the assessment of fibre reorientation during the flow. Computational Particle Mechanics, 2014, 1(4): 391–408

[22] Švec O, Skoček J, Stang H, Geiker M R, Roussel N. Free surface flow of a suspension of rigid particles in a non-Newtonian fluid: A lattice Boltzmann approach. Journal of Non-Newtonian Fluid Mechanics, 2012, 179: 32–42

[23] Thanh H T, Li J, Zhang Y X. Numerical simulation of self-consolidating engineered cementitious composite flow with the V-funnel and U-box. Construction & Building Materials, 2020, 236: 117467

[24] Tran ThanhHLiJZhangY. Numerical evaluation the effect of specimen thickness on fibre orientation in self-consolidating engineered cementitious composites. In: RILEM-fib International Symposium on Fibre Reinforced Concrete. Valencia: Springer, 2020

[25] Kulasegaram S, Karihaloo B L. Fibre-reinforced, self-compacting concrete flow modelled by smooth particle hydrodynamics. Proceedings of the Institution of Civil Engineers-Engineering and Computational Mechanics, 2013, 166(1): 22–31

[26] Shao S, Lo E Y M. Incompressible SPH method for simulating Newtonian and non-Newtonian flows with a free surface. Advances in Water Resources, 2003, 26(7): 787–800

[27] Ferrara L, Cremonesi M, Tregger N, Frangi A, Shah S P. On the identification of rheological properties of cement suspensions: Rheometry, computational fluid dynamics modeling and field test measurements. Cement and Concrete Research, 2012, 42(8): 1134–1146

[28] Kostrzanowska-Siedlarz A, Gołaszewski J. Rheological properties of high performance self-compacting concrete: Effects of composition and time. Construction & Building Materials, 2016, 115: 705–715

[29] Ghanbari A, Karihaloo B L. Prediction of the plastic viscosity of self-compacting steel fibre reinforced concrete. Cement and Concrete Research, 2009, 39(12): 1209–1216

[30] Lashkarbolouk H, Halabian A M, Chamani M R. Simulation of concrete flow in V-funnel test and the proper range of viscosity and yield stress for SCC. Materials and Structures, 2014, 47(10): 1729–1743

[31] Lepech M D, Li V C. Large-scale processing of engineered cementitious composites. ACI Materials Journal, 2008, 105(4): 358–366

[32] WangSLiV C. Polyvinyl alcohol fiber reinforced engineered cementitious composites: Material design and performances. In: Proceedings of International RILEM Workshop on HPFRCC in Structural Applications. Hawaii: Citeseer, 2005

[33] Şahmaran M, Li V C. Durability properties of micro-cracked ECC containing high volumes fly ash. Cement and Concrete Research, 2009, 39(11): 1033–1043

[34] Zhou J, Qian S, Ye G, Copuroglu O, van Breugel K, Li V C. Improved fiber distribution and mechanical properties of engineered cementitious composites by adjusting the mixing sequence. Cement and Concrete Composites, 2012, 34(3): 342–348

[35] Nguyen D L, Kim D J, Ryu G S, Koh K T. Size effect on flexural behavior of ultra-high-performance hybrid fiber-reinforced concrete. Composites. Part B, Engineering, 2013, 45(1): 1104–1116

[36] Picazo Á, Alberti M G, Gálvez J C, Enfedaque A, Vega A C. The size effect on flexural fracture of polyolefin fibre reinforced concrete. Applied Sciences (Basel, Switzerland), 2019, 9(9): 1762

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The Author(s) 2022. This article is published with open access at link.springer.com and journal.hep.com.cn