The Influence of Carbon Nanotubes and Nano-Silica Fume on Enhancing the Damping and Mechanical Properties of Cement-Based Materials — Oak Academic Publishing
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The Influence of Carbon Nanotubes and Nano-Silica Fume on Enhancing the Damping and Mechanical Properties of Cement-Based Materials
Department of Construction Engineering, Zhejiang College of Construction, Hangzhou, China
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Faculty of Engineering, Science and Technology, Infrastructure University Kuala Lumpur, Kajang, Malaysia
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College of Civil Engineering and Architecture, Zhejiang University, Hangzhou, China
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College of Civil Engineering and Architecture, Zhejiang University, Hangzhou, China
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College of Civil Engineering and Architecture, Zhejiang University, Hangzhou, China
1 Department of Construction Engineering, Zhejiang College of Construction, Hangzhou, China
2 Faculty of Engineering, Science and Technology, Infrastructure University Kuala Lumpur, Kajang, Malaysia
3 College of Civil Engineering and Architecture, Zhejiang University, Hangzhou, China
4 College of Civil Engineering and Architecture, Zhejiang University, Hangzhou, China
5 College of Civil Engineering and Architecture, Zhejiang University, Hangzhou, China
This paper conducted experimental studies on the damping and mechanical properties of carbon nanotube-nanosilica-cement composite materials with different carbon nanotube contents. The damping and mechanical properties enhancement mechanisms were analyzed and compared through the porosity structure test, XRD analysis, and scanning electron microscope observation. The results show that the introduction of nanosilica significantly improves the dispersion of carbon nanotubes in the cement matrix. At the same time, the addition of nanosilica not only effectively reduces the critical pore size and average pore size of the cement composite material, but also exhibits good synergistic effects with carbon nanotubes, which can significantly optimize the pore structure. Finally, a rationalization suggestion for the co-doping of nanosilica and carbon nanotubes was given to achieve a significant increase in the flexural strength, compressive strength and loss factor of cement-based materials.
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