Abstract
Loading a matrix with nano-sized particles such as nanotubes (carbon or tungsten di-sulfide) is expected to improve the mechanical properties of composite materials better than traditional (macroscopic) fillers due to extra-ordinary mechanical properties accompanied by high surface area. One of the major challenges towards achieving this goal is an effective dispersion of the as-produced aggregated nanotubes. In this work we demonstrate a novel dispersion method, facilitating the integration of individual nanotubes in cement paste matrix. We demonstrate the effectiveness of our nanotubes dispersion method by enhancing both flexural strength and compressive strength of cement paste using carbon and tungsten di-sulfide nanotubes. Finally, a comprehensive fractography study indicates that both types of nanotubes fail via pull-out mechanism with an intermediate state of bridging mechanism.
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Abbreviations
- CNT:
-
Carbon nanotube
- NT:
-
Nanotube
- PC:
-
Plain cement paste
- SEM:
-
Scanning electron microscope
- TEM:
-
Transmission electron microscope
- WS2NT:
-
Tungsten di-sulfide nanotube
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© 2015 Springer International Publishing Switzerland
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Nadiv, R., Shtein, M., Peled, A., Regev, O. (2015). Cement Reinforcement by Nanotubes. In: Sobolev, K., Shah, S. (eds) Nanotechnology in Construction. Springer, Cham. https://doi.org/10.1007/978-3-319-17088-6_29
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DOI: https://doi.org/10.1007/978-3-319-17088-6_29
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-17087-9
Online ISBN: 978-3-319-17088-6
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