Bond Characteristics between High-Strength Bars and Ultrahigh-Performance Concrete
Publication: Journal of Materials in Civil Engineering
Volume 32, Issue 1
Abstract
A series of pullout tests were conducted to investigate the bond characteristics of deformed high-strength steel bars embedded in ultrahigh-performance concrete (UHPC). This study considered different fiber volume contents, bar diameters, bar embedment lengths, concrete covers, and bar grades. Pullout force, slip at the free end of the bar, and crack patterns were measured, and bond failure modes were investigated. New results are reported regarding bond strength increase with fiber volume content (up to 3%), bar diameter, and bar grade. The thickness of the concrete cover significantly affected the bond failure mode. UHPC had considerable energy absorption capacity due to debonding and pullout of steel fibers from the matrix. A theoretical formula and a simplified formula to evaluate the splitting bond strength are proposed, which are consistent with the experimental results.
Get full access to this article
View all available purchase options and get full access to this article.
Data Availability Statement
All data, models, and code generated or used during the study appear in the submitted article.
Acknowledgments
This research was sponsored by the National Research Foundation of China (NRF) and a grant from the Chinese government (No. 51278402). The authors would like to express their gratitude for the support. The opinions expressed in this paper are those of the authors and do not necessarily reflect those of the sponsors.
References
Alavi-Fard, M. 1999. “Bond characteristics of high-strength concrete.” Ph.D. dissertation, Dept. of Civil Engineering, Memorial Univ. of Newfoundland.
Allwood, R. J., and B. A. Abdullah. 1996. “Modeling nonlinear bond-slip behavior for finite element analyses of reinforced concrete structures.” ACI Struct. J. 93 (5): 538–544. https://doi.org/10.14359/9712.
An, M., and M. Zhang. 2007. “Experimental research of bond capability between deformed bars and reactive powder concrete.” [In Chinese.] China Railway Sci. 28 (2): 50–54.
Bae, B., H. Choi, and C. Choi. 2016. “Bond stress between conventional reinforcement and steel fibre reinforced reactive powder concrete.” Constr. Build. Mater. 112 (Jun): 825–835. https://doi.org/10.1016/j.conbuildmat.2016.02.118.
Bathe, K., and A. Chaudhary. 1985. “A solution method for planar and axisymmetric contact problems.” Int. J. Numer. Methods Eng. 21 (1): 65–88. https://doi.org/10.1002/nme.1620210107.
Chinese Standard. 2010. Code for design of concrete structures. [In Chinese.] GB 50010. Beijing: China Architecture and Building Press.
Deng, Z., and C. Yuan. 2014. “Experimental study on bond capability between high-strength bar and reactive powder concrete.” [In Chinese.] China Civ. Eng. J. 47 (3): 69–78. https://doi.org/10.15951/j.tmgcxb.2014.03.011.
DGJ (Difang Gongcheng Jianshe). 2016. Technical specifications for application of heat-treatment high-strength ribbed bar in concrete structures. [In Chinese.] DGJ 32/TJ 202. Nanjing, China: Phoenix Science Press.
Hu, A., X. Liang, J. Yu, and Q. Shi. 2018. “Tensile characteristics of ultra-high-performance concrete.” Mag. Concr. Res. 70 (6): 314–324. https://doi.org/10.1680/jmacr.17.00126.
Hu, G. Q. 2015. Research on the shrinkage performance of ultra-high performance concrete under different curing condition. [In Chinese.] Changsha, China: Hunan Univ.
Jia, F. F. 2013. Experimental study on bond properties between steel bar and reactive powder concrete. [In Chinese.] Beijing: Beijing Jiaotong Univ.
Marchand, P., et al. 2016. “Bond behaviour of reinforcing bars in UHPFRC.” Mater. Struct. 49 (5): 1979–1995. https://doi.org/10.1617/s11527-015-0628-0.
Rao, G. A., K. Pandurangan, F. Sultana, and R. Eligehausen. 2004. “Studies on the pull-out strength of ribbed bars in high-strength concrete.” In Proc., FraMCos-6 Conf. Int. Association of Fracture Mechanics for Concrete and Concrete Structures.
RILEM TC (International Union of Laboratories and Experts in Construction Materials, Systems and Structures, Test Center). 1994. “RC 6 bond test for reinforcement steel. 2. Pull-out test, 1983.” In RILEM recommendations for the testing and use of constructions materials, 218–220. London: E&FN SPON.
Tang, H., and J. Wang. 2012. “Relationship of bar diameter and bonding performance of reactive powder concrete.” [In Chinese.] J. Beijing Univ. Civ. Eng. Archit. 28 (3): 6–9.
Tepfers, R. 1979. “Cracking of concrete cover along anchored deformed reinforcing bars.” Mag. Concr. Res. 106 (31): 3–12. https://doi.org/10.1680/macr.1979.31.106.3.
Timoshenko, S., and J. N. Goodier. 1970. Theory of elasticity. New York: McGraw-Hill.
Yoo, D. Y., H. O. Shin, J. M. Yang, and Y. S. Yoon. 2014. “Material and bond properties of ultra-high performance fiber reinforced concrete with micro steel fibers.” Composites Part B 58 (Mar): 122–133. https://doi.org/10.1016/j.compositesb.2013.10.081.
Zeng, L., S. M. Parvasi, Q. Kong, L. Huo, I. Lim, M. Li, and G. Song. 2015. “Bond slip detection of concrete encased composite structure using shear wave based active sensing approach.” Smart Mater. Struct. 24 (12): 125026. https://doi.org/10.1088/0964-1726/24/12/125026.
Information & Authors
Information
Published In
Copyright
©2019 American Society of Civil Engineers.
History
Received: Jul 19, 2018
Accepted: May 29, 2019
Published online: Oct 24, 2019
Published in print: Jan 1, 2020
Discussion open until: Mar 24, 2020
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.