Study on the Mechanical Properties of CNTs/SiO₂ Composite Modified Cement based Composites

Bin Jiang; Wenguang Wang

doi:10.54691/t7srjx43

Authors

Bin Jiang
Wenguang Wang

DOI:

https://doi.org/10.54691/t7srjx43

Keywords:

Carbon nanotubes (CNTs); SiO₂ sol; Fluidity; Setting time; Mechanical properties.

Abstract

This paper studies the hybrid application of carbon nanotubes (CNTs) and nano-SiO₂ sol in cement-based composites. Using water-bath ultrasonic dispersion technology, CNTs/SiO₂ composite fillers were prepared to enhance cement composites. The results show that carbon nanotubes (CNTs) can be uniformly dispersed in cement-based composites with nano-SiO₂ sol as the dispersion medium. When the contents of SiO₂ sol and CNTs are 1.50wt.% and 0.15wt.% respectively, the mechanical properties of cement-based composites are improved most significantly.

Downloads

Download data is not yet available.

References

[1] D.-Y. Yoo, W. Shin, B. Chun, et al.: Assessment of steel fiber corrosion in self-healed ultra-high-performance fiber-reinforced concrete and its effect on tensile performance,Cement and Concrete Research, Vol. 133 (2020) p.106091.

[2] M. Kooshafar, H. Madani: An investigation on the influence of nano silica morphology on the characteristics of cement composites,Journal of Building Engineering, Vol. 30 (2020) p.101293.

[3] J.L. Wang, S.F. Dong, A. Ashour, et al.: Dynamic mechanical properties of cementitious composites with carbon nanotubes,Materials Today Communications, Vol. 22 (2020) p.100722.

[4] G. Y. Li, P. M. Wang, X. Zhao: Mechanical behavior and microstructure of cement composites incorporating surface-treated multi-walled carbon nanotubes,Carbon, Vol. 43 (2005) No.6, p.1239-1245.

[5] P. Sikora, M. Abd Elrahman, S.-Y. Chung, et al.: Mechanical and microstructural properties of cement pastes containing carbon nanotubes and carbon nanotube-silica core-shell structures, exposed to elevated temperature,Cement and Concrete Composites, Vol. 95 (2019) p.193-204.

[6] Z. Li, H. Wang, S. He, et al.: Investigations on the preparation and mechanical properties of the nano-alumina reinforced cement composite,Materials Letters, Vol. 60 (2006) No.3, p.356-359..

[7] J. P. Salvetat-Delmotte, A. J. C. Rubio: Mechanical properties of carbon nanotubes: a fiber digest for beginners,Vol. 40 (2002) No.10, p.1729-1734.

[8] H. Biricik, F. Akz, I. L. Berktay, et al.: Study of pozzolanic properties of wheat straw ash,Vol. 29 (1999) No.5,p.637-643.

[9] S. Xu, J. Liu, Q. Li: Mechanical properties and microstructure of multi-walled carbon nanotube-reinforced cement paste,Construction and Building Materials, Vol. 76 (2015) p.16-23.

[10] J. Fan, G. Li, S. Deng, et al.: Effect of Carbon Nanotube and Styrene-Acrylic Emulsion Additives on Microstructure and Mechanical Characteristics of Cement Paste,Materials, Vol. 13 (2020) No.12, p.2807.

[11] H.R. R: Wettability of Water on the Surface of Carbon Nanomaterials(MS, Shandong University of Shandong, China 2016), p.56.

[12] S. Li, P. Shen, H. Zhou, et al.: Synergistic effects of CNTs/SiO2 composite fillers on mechanical properties of cement composites,RSC Advances, Vol. 12 (2022) No.42, p.27253-27266.

[13] W. Li, W. Ji, F. Torabian Isfahani, et al.: Nano-Silica Sol-Gel and Carbon Nanotube Coupling Effect on the Performance of Cement-Based Materials, Nanomaterials, Vol. 7 (2017) No.7, p.185.

[14] Y. Qing, Z. Zenan, K. Deyu, et al.: Influence of nano-SiO2 addition on properties of hardened cement paste as compared with silica fume,Construction and Building Materials, Vol. 21 (2007) No.3, p.539-545.

[15] L. Senff, J. A. Labrincha, V. M. Ferreira, et al.: Effect of nano-silica on rheology and fresh properties of cement pastes and mortars,Construction and Building Materials, Vol. 23 (2009) No.7, p.2487-2491.

[16] H.H. Lu, W.G. Wang: Study on the Properties of Cementitious Composites Reinforced by SiO2 sol and CNTs Hybridization, Concrete and Cement Products, Vol. 5 (2023) No.03, p.10-14.

[17] Ltifi, A. Guefrech, P. Mounanga, et al.: Experimental study of the effect of addition of nano-silica on the behaviour of cement mortars Mounir,Procedia Engineering, Vol. 10 (2011) p.900-905.

[18] H. S. Lee, B. Balasubramanian, G. V. T. Gopalakrishna, et al.: Durability performance of CNT and nanosilica admixed cement mortar,Construction and Building Materials, Vol. 159 (2018) p.463-472.

[19] Varisha, M. M. Zaheer, S. D. Hasan: Mechanical and durability performance of carbon nanotubes (CNTs) and nanosilica (NS) admixed cement mortar,Materials Today: Proceedings, Vol. 42 (2021) p.1422-1431.

[20] Y.C. Flores, G. C. Cordeiro, R. D. Toledo Filho, et al.: Performance of Portland cement pastes containing nano-silica and different types of silica,Construction and Building Materials, Vol. 146 (2017) p.524-530.

[21] P. Hou, J. Qian, X. Cheng, et al.: Effects of the pozzolanic reactivity of nanoSiO 2 on cement-based materials,Cement and Concrete Composites, Vol. 55 (2015) p.250-258.

[22] A. Khaloo, M. H. Mobini, P. Hosseini: Influence of different types of nano-SiO2 particles on properties of high-performance concrete,Construction and Building Materials, Vol. 113 (2016) p.188-201.