Experimental and Numerical Study of Nano-Silica Additions on the Local Bond of Ultra-High Performance Concrete and Steel Reinforcing Bar

Ahad Amini Pishro, Xiong Feng


Micro-silica is widely used as an additive to cement in producing high performance concrete. This matter is used to enhance the strength and efficiency of concrete. Recently, due to the development of advanced nano-technology, nano-silica has been produced with particle sizes smaller than micro-silica and higher pozzolanic activity. Studies show that addition of nano-silica into cement-based materials improves their mechanical properties. Considering the unique characteristics of nano-silica, it seems that this material can be used in ultra-high performance concrete (UHPC). Therefore, further studies are needed on how the local bond and bond stress of steel reinforcing bar and UHPC containing nano-silica would be effected. In the present study, after preparing the mix designs and proposed specimens, the effects of various parameters on the local bond of steel reinforcing bars and UHPC containing nano-silica were examined by pullout experiments. In this research, we have numerically investigated the bond strength using numerical methods and calibration of the ABAQUS results in addition to its experimental study of ultra-high performance concrete and steel reinforcement. In numerical analysis, the concrete damage plasticity method was used to simulate the nonlinear behavior of concrete and its strain softness. Comparing between numerical and experimental analysis results shows that numerical analysis with high precision can predict the bond stress, bond load, and concrete specimen fracture mode.


Ultra-High Performance Concrete; Nano-Silica; Local Bond; Bond Stress; Pullout Experiment.


Jo, Byung-Wan, Kim, C.H. "Characteristics of cement mortar with nano-SiO 2 particles." Construction and building materials21.6 (2007): 1351-1355, https://doi.org/10.1016/j.conbuildmat.2005.12.020.

Alkaysi, M., El-Tawil, S. "Bond between Ultra-High Performance Concrete and Steel Bars", First International Interactive Symposium on UHPC, (2016).

Carbonell Muñoz, M.A., Harris, D.K. "Bond performance between ultrahigh-performance concrete and normal-strength concrete." Journal of Materials in Civil Engineering 26.8 (2013): 04014031, https://doi/abs/10.1061/(ASCE)MT.1943-5533.0000890.

Engstrom, B., Magnusson, J., Huang, Z. "Pull-out bond behavior of ribbed bars in normal and high-strength concrete with various confinements." Special Publication 180 (1998): 215-242.

Kim, S., Lee, J., Joh, C., Kwahk, I. "Flexural Bond Behavior of Rebar in Ultra-High Performance Concrete Beams Considering Lap-Splice Length and Cover Depth." Engineering 8.03 (2016): 116, http://DOI: 10.4236/eng.2016.83013

Kook, K.H., Kwahk, I.J. "Bond characteristics of ultra high performance concrete." Journal of the Korea Concrete Institute 22.6 (2010): 753-760, http:// DOI: 10.4334/JKCI.2010.22.6.753.

Roy, M., Corey H., Wille, K. "Influence of volume fraction and orientation of fibers on the pullout behavior of reinforcement bar embedded in ultra high performance concrete." Construction and Building Materials146 (2017): 582-593, https://doi.org/10.1016/j.conbuildmat.2017.04.081.

Xing, G., Zhou, C., Wu, T., Liu, B. "Experimental study on bond behavior between plain reinforcing bars and concrete." Advances in Materials Science and Engineering 2015 (2015), http://dx.doi.org/10.1155/2015/604280.

Guizani, L., Chaallal, O., Mousavi, S.S. "Local bond stress-slip model for reinforced concrete joints and anchorages with moderate confinement." Canadian Journal of Civil Engineering 44.3 (2017): 201-211, https://doi.org/10.1139/cjce-2015-0333.

Yan, C., Mindess, S. "Bond between epoxy-coated reinforcing bars and concrete under impact loading." Canadian Journal of Civil Engineering 21.1 (1994): 89-100, https://doi.org/10.1139/l94-009.

Duchesneau, F., Charron, J.P., Massicotte, B. "Monolithic and hybrid precast bridge parapets in high and ultra-high performance fibre reinforced concretes." Canadian Journal of Civil Engineering 38.8 (2011): 859-869, https://doi.org/10.1139/l11-054.

Alkaysi, M., El-Tawil, S., Liu, Z., Hansen, W. "Effects of silica powder and cement type on durability of ultra high performance concrete (UHPC)." Cement and Concrete Composites 66 (2016): 47-56, https://doi.org/10.1016/j.cemconcomp.2015.11.005.

Alkaysi, M, El-Tawil, S. "Effects of variations in the mix constituents of ultra high performance concrete (UHPC) on cost and performance." Materials and Structures 49.10 (2016): 4185-4200, https://doi.org/10.1617/s11527-015-0780-6.

ASTM C234-91a, "Standard Test Method for Com-paring Concretes on the Basis of the Bond Developed with Reinforcing Steel", ASTM Annual Book of Stand-ards, Section 4, Construction, Philadelphia.

RILEM, "Technical Recommendations for the Testing and Use of Construction Materials: RC6, Bond Test for Reinforcement Steed", (1970), 2.Pull-out Test.

Ma, J., Schneider, H. "Properties of ultra-high-performance concrete." Leipzig Annual Civil Engineering Report (LACER) 7 (2002): 25-32.

ABAQUS Analisys User’s Manual, Version 2017, (2017).

Full Text: PDF

DOI: 10.28991/cej-030962


  • There are currently no refbacks.

Copyright (c) 2018 Ahad Amini Pishro, Xiong Feng

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.