Single-Side Shear Bond Strength and OTZ Microstructure of UHPC Repair Materials with Concrete Substrate
Publication: Journal of Materials in Civil Engineering
Volume 34, Issue 9
Abstract
In this study, the effects of ultrahigh-performance concrete (UHPC) and normal-strength concrete (NSC) as repair materials on the bond strength and overlay transition zone (OTZ) microstructure were investigated. The single-side shear test was performed to obtain the shear bond strength at the interfaces between the repair materials and concrete substrates, and three types of substrate strength grades were adopted. OTZ crack width was measured and characterized using kernel density estimation, and the OTZ porosity was quantitatively characterized based on the gray-level value, for which -wide strips successively extending from the substrate surface to the repair material were selected. The porosity of each strip was calculated as the percentage of the area of this component to the total area of the strip. The micromechanical properties were determined using a nanoindenter. The results show that the UHPC-combined substrate had a higher bond strength than the NSC-combined substrate for the three substrate strength grades. The UHPC decreased the OTZ crack width. Moreover, the fraction of pores in the OTZ of the UHPC was lower than that of the NSC. The modulus and hardness values of the OTZ for the UHPC exceeded those for the NSC. These superior OTZ microstructure properties of the UHPC repair materials explain the high bond strength of the UHPC-combined substrate. Therefore, UHPC combined with a concrete substrate featuring a rough surface represents a useful repair material.
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Data Availability Statement
All data, models, and code generated or used during the study appear in the published article.
Acknowledgments
This work was supported by the National Natural Science Foundation of China (Grant Nos. 51978212 and 51678206) and Natural Science Foundation of Heilongjiang (JQ2019E001).
References
Alexander, M., and H. Beushausen. 2019. “Durability, service life prediction, and modeling for reinforced concrete structures—Review and critique.” Cem. Concr. Res. 122 (Aug): 17–29. https://doi.org/10.1016/j.cemconres.2019.04.018.
Bentz, D. P., I. De la Varga, J. F. Muñoz, R. P. Spragg, B. A. Graybeal, D. S. Hussey, D. L. Jacobson, S. Z. Jones, and J. M. LaManna. 2018. “Influence of substrate moisture state and roughness on interface microstructure and bond strength: Slant shear vs. pull-off testing.” Cem. Concr. Compos. 87 (Mar): 63–72. https://doi.org/10.1016/j.cemconcomp.2017.12.005.
Beushausen, H., B. Höhlig, and M. Talotti. 2017. “The influence of substrate moisture preparation on bond strength of concrete overlays and the microstructure of the OTZ.” Cem. Concr. Res. 92 (Feb): 84–91. https://doi.org/10.1016/j.cemconres.2016.11.017.
Beushausen, H., R. Torrent, and M. G. Alexander. 2019. “Performance-based approaches for concrete durability: State of the art and future research needs.” Cem. Concr. Res. 119 (May): 11–20. https://doi.org/10.1016/j.cemconres.2019.01.003.
CEN (European Committee for Standardization). 2003. Products and systems for the protection and repair of concrete structures—Definitions—Requirements—Quality control and evaluation of conformity. EN 1504. Brussels, Belgium: CEN.
Chen, R. H., and P. Z. Qiao. 2015. “Microscopic characterization of concrete durability using nano-indentation tests.” Chin. Q. Mech. 1: 88–94.
Courard, L., T. Piotrowski, and A. Garbacz. 2014. “Near-to-surface properties affecting bond strength in concrete repair.” Cem. Concr. Compos. 46 (Feb): 73–80. https://doi.org/10.1016/j.cemconcomp.2013.11.005.
De La Varga, I., J. F. Munoz, D. P. Bentz, R. P. Spragg, P. E. Stutzman, and B. A. Graybeal. 2018. “Grout-concrete interface bond performance: Effect of interface moisture on the tensile bond strength and grout microstructure.” Constr. Build. Mater. 170 (May): 747–756. https://doi.org/10.1016/j.conbuildmat.2018.03.076.
Farzad, M., M. Shafieifar, and A. Azizinamini. 2019. “Experimental and numerical study on bond strength between conventional concrete and ultra high-performance concrete (UHPC).” Eng. Struct. 186 (May): 297–305. https://doi.org/10.1016/j.engstruct.2019.02.030.
Feng, S., H. Xiao, and J. Geng. 2020a. “Bond strength between concrete substrate and repair mortar: Effect of fibre stiffness and substrate surface roughness.” Cem. Concr. Compos. 114 (Nov): 103746. https://doi.org/10.1016/j.cemconcomp.2020.103746.
Feng, S., H. Xiao, and H. Li. 2020b. “Comparative studies of the effect of ultrahigh-performance concrete and normal concrete as repair materials on interfacial bond properties and microstructure.” Eng. Struct. 222 (Nov): 111122. https://doi.org/10.1016/j.engstruct.2020.111122.
Feng, S., H. Xiao, R. Zhang, and C. Yang. 2020c. “Bond performance between substrate concrete and repair mortar: Effect of carbon fibre and expansive agent.” Constr. Build. Mater. 250 (Jul): 118830. https://doi.org/10.1016/j.conbuildmat.2020.118830.
Gao, Y., G. De Schutter, G. Ye, Z. Tan, and K. Wu. 2014. “The ITZ microstructure, thickness and porosity in blended cementitious composite: Effects of curing age, water to binder ratio and aggregate content.” Composites, Part B 60 (Apr): 1–13. https://doi.org/10.1016/j.compositesb.2013.12.021.
Guo, S. Y., X. J. Zhang, Z. Chen, B. Mou, H. S. Shang, P. Wang, and J. Ren. 2020. “Mechanical and interface bonding properties of epoxy resin reinforced portland cement repairing mortar.” Constr. Build. Mater. 264 (Dec): 120715. https://doi.org/10.1016/j.conbuildmat.2020.120715.
Haber, Z. B., J. F. Munoz, I. De la Varga, and A. G. Benjamin. 2018. “Bond characterization of UHPC overlays for concrete bridge decks: Laboratory and field testing.” Constr. Build. Mater. 190 (Nov): 1056–1068. https://doi.org/10.1016/j.conbuildmat.2018.09.167.
He, J., D. Lei, and W. Xu. 2020. “In-situ measurement of nominal compressive elastic modulus of interfacial transition zone in concrete by SEM-DIC coupled method.” Cem. Concr. Compos. 114 (Nov): 103779. https://doi.org/10.1016/j.cemconcomp.2020.103779.
Igarashi, S., A. Bentur, and S. Mindess. 1996. “Microhardness testing of cementitious materials.” Adv. Cem. Based Mater. 4 (2): 48–57. https://doi.org/10.1016/S1065-7355(96)90051-6.
Jaeger, J. C., and N. G. W. Cook. 1979. Fundamentals of rock mechanics. 3rd ed. London: Chapman & Hall.
Jafarinejad, S., A. Rabiee, and M. Shekarchi. 2019. “Experimental investigation on the bond strength between ultra high strength fiber reinforced cementitious mortar and conventional concrete.” Constr. Build. Mater. 229 (Dec): 116814. https://doi.org/10.1016/j.conbuildmat.2019.116814.
Ju, Y., T. Shen, and D. Wang. 2020. “Bonding behavior between reactive powder concrete and normal strength concrete.” Constr. Build. Mater. 242 (May): 118024. https://doi.org/10.1016/j.conbuildmat.2020.118024.
Júlio, E. N., F. A. Branco, V. D. Silva, and J. F. Lourenço. 2006. “Influence of added concrete compressive strength on adhesion to an existing concrete substrate.” Build. Environ. 41 (12): 1934–1939. https://doi.org/10.1016/j.buildenv.2005.06.023.
Liu, K., C. Zou, and J. Yan. 2020. “Shear transfer behavior between substrate recycled aggregate concrete and new natural aggregate concrete.” Struct. Concr. 22 (2): 1022–1036. https://doi.org/10.1002/suco.201900570.
Morgan, D. R. 1996. “Compatibility of concrete repair materials and systems.” Constr. Build. Mater. 10 (1): 57–67. https://doi.org/10.1016/0950-0618(95)00060-7.
Němeček, J. 2009. “Creep effects in nanoindentation of hydrated phases of cement pastes.” Mater. Charact. 60 (9): 1028–1034. https://doi.org/10.1016/j.matchar.2009.04.008.
Nežerka, V., P. Bílý, V. Hrbek, and J. Fládr. 2019. “Impact of silica fume, fly ash, and metakaolin on the thickness and strength of the ITZ in concrete.” Cem. Concr. Compos. 103 (Oct): 252–262. https://doi.org/10.1016/j.cemconcomp.2019.05.012.
Ouyang, X., C. Shi, Z. Wu, K. Li, B. Shan, and J. Shi. 2020. “Experimental investigation and prediction of elastic modulus of ultra-high performance concrete (UHPC) based on its composition.” Cem. Concr. Res. 138 (Dec): 106241. https://doi.org/10.1016/j.cemconres.2020.106241.
Pi, Z., H. Xiao, R. Liu, M. Liu, and H. Li. 2020. “Effects of brass coating and nano- coating on steel fiber–matrix interfacial properties of cement-based composite.” Composites, Part B 189 (May): 107904. https://doi.org/10.1016/j.compositesb.2020.107904.
Sabah, S. A., M. Hassan, N. M. Bunnori, and M. M. Johari. 2019. “Bond strength of the interface between normal concrete substrate and GUSMRC repair material overlay.” Constr. Build. Mater. 216 (Aug): 261–271. https://doi.org/10.1016/j.conbuildmat.2019.04.270.
Santos, D. S., P. M. D. Santos, and D. Dias-da-Costa. 2012. “Effect of surface preparation and bonding agent on the concrete-to-concrete interface strength.” Constr. Build. Mater. 37 (Dec): 102–110. https://doi.org/10.1016/j.conbuildmat.2012.07.028.
Schrader, E. K. 1992. “Mistakes, misconceptions, and controversial issues concerning concrete and concrete repairs, Part 3.” Concr. Int. 14 (11): 54–59.
Semendary, A. A., and D. Svecova. 2020. “Interfacial parameters for bridge connections at high-strength concrete–ultrahigh-performance concrete interface.” J. Mater. Civ. Eng. 32 (4): 04020060. https://doi.org/10.1061/(ASCE)MT.1943-5533.0003107.
Song, X. B., C. Z. Li, D. D. Chen, and X. L. Gu. 2021. “Interfacial mechanical properties of recycled aggregate concrete reinforced by nano-materials.” Constr. Build. Mater. 270 (Feb): 121446. https://doi.org/10.1016/j.conbuildmat.2020.121446.
Tian, J., X. Wu, Y. Zheng, S. Hu, Y. Du, W. Wang, and L. Zhang. 2019a. “Investigation of interface shear properties and mechanical model between ECC and concrete.” Constr. Build. Mater. 223 (Oct): 12–27. https://doi.org/10.1016/j.conbuildmat.2019.06.188.
Tian, J., X. Wu, Y. Zheng, S. Hu, W. Ren, Y. Du, W. Wang, C. Sun, J. Ma, and Y. Ye. 2019b. “Investigation of damage behaviors of ECC-to-concrete interface and damage prediction model under salt freeze-thaw cycles.” Constr. Build. Mater. 226 (Nov): 238–249. https://doi.org/10.1016/j.conbuildmat.2019.07.237.
Valikhani, A., A. J. Jahromi, I. M. Mantawy, and A. Atorod. 2020a. “Numerical modelling of concrete-to-UHPC bond strength.” Materials (Basel) 13 (6): 1379. https://doi.org/10.3390/ma13061379.
Valikhani, A., A. J. Jahromi, I. M. Mantawy, and A. Azizinamini. 2021. “Effect of mechanical connectors on interface shear strength between concrete substrates and UHPC: Experimental and numerical studies and proposed design equation.” Constr. Build. Mater. 267 (Jan): 120587. https://doi.org/10.1016/j.conbuildmat.2020.120587.
Valikhani, A., A. J. Jahromi, I. M. Mantawy, and A. Azizinaminia. 2020b. “Experimental evaluation of concrete-to-UHPC bond strength with correlation to surface roughness for repair application.” Constr. Build. Mater. 238 (Mar): 117753. https://doi.org/10.1016/j.conbuildmat.2019.117753.
Wu, K., H. Shi, L. Xu, G. Ye, and G. De Schutter. 2016. “Microstructural characterization of ITZ in blended cement concretes and its relation to transport properties.” Cem. Concr. Res. 79 (Jan): 243–256. https://doi.org/10.1016/j.cemconres.2015.09.018.
Wu, Z., K. H. Khayat, and C. Shi. 2018. “How do fiber shape and matrix composition affect fiber pullout behavior and flexural properties of UHPC?” Cem. Concr. Compos. 90 (Jul): 193–201. https://doi.org/10.1016/j.cemconcomp.2018.03.021.
Xie, H., G. Li, and G. Xiong. 2002. “Microstructure model of the interfacial zone between fresh and old concrete.” J. Wuhan Univ. Technol. Mater. Sci. Ed. 17 (4): 64–68. https://doi.org/10.1007/BF02838421.
Xie, Y., D. J. Corr, F. Jin, H. Zhou, and S. P. Shah. 2015. “Experimental study of the interfacial transition zone (ITZ) of model rock-filled concrete (RFC).” Cem. Concr. Compos. 55 (Jan): 223–231. https://doi.org/10.1016/j.cemconcomp.2014.09.002.
Yazdi, M. A., E. Dejager, M. Debraekeleer, E. Gruyaert, K. V. Tittelboom, and N. D. Beliea. 2020. “Bond strength between concrete and repair mortar and its relation with concrete removal techniques and substrate composition.” Constr. Build. Mater. 230 (Jan): 116900. https://doi.org/10.1016/j.conbuildmat.2019.116900.
Zanotti, C., N. Banthia, and G. Plizzari. 2014. “A study of some factors affecting bond in cementitious fiber reinforced repairs.” Cem. Concr. Res. 63 (Sep): 117–126. https://doi.org/10.1016/j.cemconres.2014.05.008.
Zhan, B. J., D. X. Xuan, C. S. Poon, and K. L. Scrivener. 2020. “Characterization of interfacial transition zone in concrete prepared with carbonated modeled recycled concrete aggregates.” Cem. Concr. Res. 136 (Oct): 106175. https://doi.org/10.1016/j.cemconres.2020.106175.
Zhang, X., W. Zhang, Y. Luo, L. Wang, J. Peng, and J. Zhang. 2020a. “Interface shear strength between self-compacting concrete and carbonated concrete.” J. Mater. Civ. Eng. 32 (6): 04020113. https://doi.org/10.1061/(ASCE)MT.1943-5533.0003229.
Zhang, Y., C. Zhang, Y. Zhu, J. Cao, and X. Shao. 2020b. “An experimental study: Various influence factors affecting interfacial shear performance of UHPC-NSC.” Constr. Build. Mater. 236 (Mar): 117480. https://doi.org/10.1016/j.conbuildmat.2019.117480.
Zhang, Y., P. Zhu, Z. Liao, and L. Wang. 2020c. “Interfacial bond properties between normal strength concrete substrate and ultra-high performance concrete as a repair material.” Constr. Build. Mater. 235 (Feb): 117431. https://doi.org/10.1016/j.conbuildmat.2019.117431.
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Published In
Journal of Materials in Civil Engineering
Volume 34 • Issue 9 • September 2022
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© 2022 American Society of Civil Engineers.
History
Received: Sep 8, 2021
Accepted: Jan 6, 2022
Published online: Jun 23, 2022
Published in print: Sep 1, 2022
Discussion open until: Nov 23, 2022
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