Energy-Based Method for Evaluating Cracks and Resistance of Fiber Reinforced Ultra-High Strength Concrete under Impact Loads

Document Type : Research Article


1 Department of Civil Engineering, Imam Khomeini International University, Qazvin, Iran

2 Department of Civil Engineering, Qazvin Branch, Islamic Azad University, Qazvin, Iran

3 Department of Civil & Environmental Engineering, Amirkabir University of Technology, Tehran, Iran


In order to adjust the lack of sufficient ductility of ultra-high strength concrete (UHSC), different types of fiber were used in this study. This research investigates the effect of glass, polypropylene and steel fibers on the impact resistance and crack propagation of fiber reinforced UHSCs by implementing slab specimens with a dimension of 300×300×30 mm. The experimental program includes 18 specimens with 1%, 1.5% and 2% of concrete volume for each type of fiber which was made with two different mixing methods (Ordinary fiber reinforced concrete (FRC) and high performance fiber reinforced concrete (HPFRC)). In this study, specimens were placed under a low-velocity impact loading (5.42 m/s) within a fixed rigid constrained setup. The health index and the crack propagation correlation are two criteria for determining the trend of degradation and impact resistance reduction. Results demonstrate that the FRCs show higher impact resistance in comparison with the HPFRC because the HPFRC method doesn’t provide enough cohesion between concrete and fibers. The obtained results also show that FRC specimens include polypropylene, endure higher impact resistance with a greater amount of health index rather than other specimens. By increasing the fiber’s volume in the specimens fabricated with glass and polypropylene, a more homogenous composite was formed and energy spread more uniform over all faces of FRC specimen.


Main Subjects

[1] ACI Committee 363, Report on High-Strength Concrete, American Concrete Institute, Farmington Hills, MI, (2010).
[2] A.S. El-Dieb, Mechanical, durability and microstructural characteristics of ultra-high-strength self-compacting concrete incorporating steel fibers, Materials & Design, 30(10) (2009) 4286-4292.
[3] M. Courtial, M.N. de Noirfontaine, F. Dunstetter, M. Signes-Frehel, P. Mounanga, K. Cherkaoui, A. Khelidj, Effect of polycarboxylate and crushed quartz in UHPC: Microstructural investigation, Construction and Building Materials, 44 (2013) 699-705.
[4] A.A. Shah, Y. Ribakov, Recent trends in steel fibered high-strength concrete, Materials & Design, 32(8) (2011) 4122-4151.
[5] T.H. Almusallam, A.A. Abadel, Y.A. Al-Salloum, N.A. Siddiqui, H. Abbas, Effectiveness of hybrid-fibers in improving the impact resistance of RC slabs, International Journal of Impact Engineering, 81 (2015) 61- 73.
[6] M.E. Arslan, Effects of basalt and glass chopped fibers addition on fracture energy and mechanical properties of ordinary concrete: CMOD measurement, Construction and Building Materials, 114 (2016) 383-391.
[7] D. Mostofinejad, M.R. Nikoo, S.A. Hosseini, Determination of optimized mix design and curing conditions of reactive powder concrete (RPC), Construction and Building Materials, 123 (2016) 754-767.
[8] S. Nie, S. Hu, F. Wang, P. Yuan, Y. Zhu, J. Ye, Y. Liu, Internal curing – A suitable method for improving the performance of heat-cured concrete, Construction and Building Materials, 122 (2016) 294-301.
[9] S.H. Park, D.J. Kim, S.W. Kim, Investigating the impact resistance of ultra-high-performance fiber-reinforced concrete using an improved strain energy impact test machine, Construction and Building Materials, 125 (2016) 145-159.
[10][9] K. Onoue, H. Tamai, H. Suseno, Shock-absorbing capability of lightweight concrete utilizing volcanic pumice aggregate, Construction and Building Materials, 83 (2015) 261-274.
[11]K.C.G. Ong, M. Basheerkhan, P. Paramasivam, Resistance of fibre concrete slabs to low velocity projectile impact, Cement and Concrete Composites, 21(5) (1999) 391-401.
[12]H.S. Rao, V.G. Ghorpade, N.V. Ramana, K. Gnaneswar, Response of SIFCON two-way slabs under impact loading, International Journal of Impact Engineering, 37(4) (2010) 452-458.
[13]Y.-S. Tai, I.-T. Wang, Elucidating the mechanical behavior of ultra-high[1]strength concrete under repeated impact loading, Structural engineering & mechanics, 37(1) (2011) 1-15.
[14][13] R. Sovják, T. Vavřiník, P. Máca, J. Zatloukal, P. Konvalinka, Y. Song, Experimental Investigation of Ultra-high Performance Fiber Reinforced Concrete Slabs Subjected to Deformable Projectile Impact, Procedia Engineering, 65 (2013) 120-125.
[15][14] L. Mao, S.J. Barnett, A. Tyas, J. Warren, G.K. Schleyer, S.S. Zaini, Response of small scale ultra high performance fibre reinforced concrete slabs to blast loading, Construction and Building Materials, 93 (2015) 822-830.
[16]Ö. Anil, E. Kantar, M.C. Yilmaz, Low velocity impact behavior of RC slabs with different support types, Construction and Building Materials, 93 (2015) 1078-1088.
[17]J. Radnić, D. Matešan, N. Grgić, G. Baloević, Impact testing of RC slabs strengthened with CFRP strips, Composite Structures, 121 (2015) 90- 103.
[18]R. Yu, P. Spiesz, H.J.H. Brouwers, Energy absorption capacity of a sustainable Ultra-High Performance Fibre Reinforced Concrete (UHPFRC) in quasi-static mode and under high velocity projectile impact, Cement and Concrete Composites, 68 (2016) 109-122.
[19]ASTM C150 / C150M-20, Standard Specification for Portland Cement, ASTM International, West Conshohocken, PA, (2020),
[20]EFNARC, Specification and guidelines for self-compacting concrete, Association House, Surrey, UK, (2002).
[21]BS 1881-116, Method for determination of compressive strength of concrete cubes, (2003).
[22]A.E. Naaman, D. Otter, H. Najm, Elastic modulus of SIFCON in tension and compression, Materials Journal, 88(6) (1992) 603-613.
[23]Y. Farnam, S. Mohammadi, M. Shekarchi, Experimental and numerical investigations of low velocity impact behavior of high-performance fiber-reinforced cement based composite, International Journal of Impact Engineering, 37(2) (2010) 220-229.