Dynamic Compression Behavior of Ultra-high Performance Cement-based Composite with Hybrid Steel Fiber Reinforcements

Abstract

Ultra-high performance cement-based composites (UHPCC) is promising in construction of concrete structures that suffer impact and explosive loads. In this study, a reference UHPCC mixture with no fiber reinforcement and four mixtures with a single type of fiber reinforcement or hybrid fiber reinforcements of straight smooth and end hook type of steel fibers were prepared. Split Hopkinson pressure bar (SHPB) was performed to investigate the dynamic compression behavior of UHPCC and X-CT test and 3D reconstruction technology were used to indicate the failure process of UHPCC under impact loading. Results show that UHPCC with 1% straight smooth fiber and 2% end hook fiber reinforcements demonstrated the best static and dynamic mechanical properties. When the hybrid steel fiber reinforcements are added in the concrete, it may need more impact energy to break the matrix and to pull out the fiber reinforcements, thus, the mixture with hybrid steel fiber reinforcements demonstrates excellent dynamic compressive performance.

Keywords

ultra-high performance cement-based composite / dynamic compression behavior / hybrid fiber reinforcements / split Hopkinson pressure bar

References

[1] Cao Y Y Y, Yu Q L, Brouwers HJH, et al. Predicting the Rate Effects on Hooked-End Fiber Pullout Performance from Ultra-High Performance Concrete (UHPC)[J]. Cem. Concr. Res., 2019, 120: 164-175.

[2] Jiang J Y, Zhou W J, Chu H Y, et al. Design of Eco-Friendly Ultra-High Performance Concrete with Supplementary Cementitious Materials[J]. J. Wuhan. Univ. Technol-Mater.Sci.Ed., 2019, 34(6): 1350-1359.

[3] Rong Z D, Sun W, Xiao H J, et al. Effects of Nano-SiO₂ Particles on the Mechanical and Microstructural Properties of Ultra-High Performance Cementitious Composites[J]. Cem. Concr. Compos., 2015, 56: 25-31.

[4] Pyo S, Tafesse M, Kim B J, et al. Effects of Quartz-Based Mine Tailings on Characteristics and Leaching Behavior of Ultra-High Performance Concrete[J]. Constr. Build. Mater., 2018, 166: 110-117.

[5] Zhou Z D, Qiao P Z. Tensile Behavior of Ultra-High Performance Concrete: Analytical Model and Experimental Validation[J]. Constr. Build. Mater., 2019, 201: 842-851.

[6] Kim J J, Yoo D Y. Effects of Fiber Shape and Distance on the Pullout Behavior of Steel Fibers Embedded in Ultra-High-Performance Concrete[J]. Cem. Concr. Compos., 2019, 103: 213-223.

[7] Song Q L, Yu R, Wang X P, et al. A Novel Self-Compacting Ultra-High Performance Fibre Reinforced Concrete (SCUHPFRC) Derived from Compounded High-Active Powders[J]. Constr. Build. Mater., 2018, 158: 883-893.

[8] Rong Z D, Sun W. Experimental and Numerical Investigation on the Dynamic Tensile Behavior of Ultra-High Performance Cement Based Composites[J]. Constr. Build. Mater., 2012, 31: 168-173.

[9] Yoo D Y, Banthia N. Mechanical and Structural Behaviors of Ultra-High-Performance Fiber-Reinforced Concrete Subjected to Impact and Blast[J]. Constr. Build. Mater., 2017, 149: 416-431.

[10] Jiang G, Rong Z D, Sun W. Effects of Metakaolin on Mechanical Properties, Pore Structure and Hydration Heat of Mortars at 0.17 w/b Ratio[J]. Constr. Build. Mater., 2015, 93: 564-572.

[11] Huang H H, Gao X J, Wang H, et al. Influence of Rice Husk Ash on Strength and Permeability of Ultra-High Performance Concrete[J]. Constr. Build. Mater., 2017, 149: 621-628.

[12] Kang S H, Hong S G, Moon J. The Use of Rice Husk Ash as Reactive Filler in Ultra-High Performance Concrete[J]. Cem. Concr. Res., 2019, 115: 389-400.

[13] Rong Z D, Sun W, Zhang Y S. Dynamic Compression Behavior of Ultra-High Performance Cement Based Composites[J]. Int. J. Impact. Eng., 2010, 37(5): 515-520.

[14] Hassan M, Wille K. Experimental Impact Analysis on Ultra-High Performance Concrete (UHPC) for Achieving Stress Equilibrium (SE) and Constant Strain Rate (CSR) in Split Hopkinson Pressure Bar (SHPB) Using Pulse Shaping Technique[J]. Constr. Build. Mater., 2017, 114: 747-757.

[15] Ren G M, Wu H, Fang Q, et al. Effects of Steel Fiber Content and Type on Dynamic Compressive Mechanical Properties of UHPCC[J]. Constr. Build. Mater., 2018, 164: 29-43.

[16] Wu Z M, Shi C J, He W, et al. Static and Dynamic Compressive Properties of Ultra-High Performance Concrete (UHPC) with Hybrid Steel Fiber Reinforcements[J]. Cem. Concr. Compos., 2017, 79: 148-157.

[17] Rong Z D, Jiang G, Sun W. Effects of Metakaolin on Mechanical and Microstructural Properties of Ultra-High Performance Cement-Based Composites[J]. J. Sustain. Cement-Based. Mater., 2018, 7(5): 296-310.

[18] Chotard T J, Martel M P B, Smith A. Application of X-Ray Computed Tomography to Characterise the Early Hydration of Calcium Aluminate Cement[J]. Cem. Concr. Compos., 2003, 25(1): 145-152.

[19] Promentilla M A B, Sugiyama T, Hitomi T, et al. Quantification of Tortuosity in Hardened Cement Pastes Using Synchrotron-Based X-Ray Computed Microtomography[J]. Cem. Concr. Res., 2009, 39(6): 548-557.

[20] Han J D, Sun W, Pan G H. X-Ray Microtomography of the Carbonation Front Shape Evolution of Cement Mortar and Modeling of Accelerated Carbonation Reaction[J]. J. Wuhan. Univ. Technol-Mater.Sci. Ed., 2013, 28(2): 303