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Enhanced Post-crack Load Carrying Capacity of Nano and Micro Scale Carbon Fiber Reinforced Mortars

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Part of the Structural Integrity book series (STIN,volume 8)

Abstract

A thorough investigation of the pre-peak, first crack and post-crack flexural response, energy absorption performance and ductility of cement mortar composites with hybrid reinforcement using nano and micro scale carbon fibers took place in this study. Young’s modulus, energy absorption capability and energy based dimensionless indices (toughness indices) were investigated through the Linear Elastic Fracture Mechanics theory. Prismatic notched specimens of neat mortar and mortars reinforced with 0.1 vol.% CNFs and/or 0.5 vol.% CFs were subjected to a three-point close loop bending test, using the crack mouth opening displacement, CMOD. Combined networks of CNFs and CFs were incorporated in mortar matrix in order to investigate the synergistic effect of hybrid reinforcement on the mechanical properties of the single-reinforced mortars. The experimental results showed an exceptional multi scale mechanical performance of nano and micro scale fiber reinforced mortars as reflected from the load-CMOD response of specimens. The energy absorption capability and load carrying capacity of multiscale reinforced mortars after the formation of the initial crack (first crack), are outstandingly improved as indicated by the 138 and 100% increases of the proposed size independent toughness indices, up to the peak load and the ultimate failure, respectively.

Keywords

  • Carbon nanofibers
  • Carbon fibers
  • Energy absorption capability
  • Toughness indices

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  • DOI: 10.1007/978-3-030-21894-2_15
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References

  1. Shah, S.P., Ouyang, C.: Mechanical behavior of fiber reinforced cement-based composites. J. Am. Ceram. Soc. 74(11), 2727–2953 (1991)

    CrossRef  Google Scholar 

  2. Brandt, A.M.: Fibre reinforced cement-based (FRC) composites after over 40 years of development in building and civil engineering. Compos. Struct. 86, 3–9 (2008)

    CrossRef  Google Scholar 

  3. Gdoutos, E.E., Konsta-Gdoutos, M.S., Danoglidis, P.A.: Portland cement mortar nanocomposites at low carbon nanotube and carbon nanofiber content: a fracture mechanics experimental study. Cement Concr. Compos. 70, 110–118 (2016)

    CrossRef  Google Scholar 

  4. Metaxa, Z.S., Konsta-Gdoutos, M.S., Shah, S.P.: Mechanical properties and nanostructure of cement-based materials reinforced with carbon nano-fibers and polyvinyl alcohol (PVA) microfibers. ACI Spec. Publ. Adv. Mater. Sci. Concr. 270, 115–126 (2010)

    Google Scholar 

  5. Shah, S.P., Konsta-Gdoutos, M.S., Metaxa, Z.S.: Highly dispersed carbon nanotube reinforced cement based materials. United States Patent US9,365,456 (B2), 14 June 2016

    Google Scholar 

  6. Danoglidis, P.A., Konsta-Gdoutos, M.S., Gdoutos, E.E., Shah, S.P.: Strength, energy absorption capability and self-sensing properties of multifunctional carbon nanotube reinforced mortars. Constr. Build. Mater. 120, 265–274 (2016)

    CrossRef  Google Scholar 

  7. Barr, B.I.G., Gettu, R., Al-Oraimi, S.K.A., Bryars, L.S.: Toughness measurement—the need to thing again. Cement Concr. Compos. 18, 281–297 (1996)

    CrossRef  Google Scholar 

  8. Toutanji, H.A., El-Korchi, T., Katz, R.N.: Strength and reliability of carbon-fiber reinforced cement composites. Cement Concr. Compos. 16, 15–21 (1994)

    CrossRef  Google Scholar 

  9. American Concrete Institute: Report on Fiber Reinforced Concrete. ACI 544.1R-96 (1996)

    Google Scholar 

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Acknowledgements

The authors would like to kindly acknowledge the financial support from the Academy of Athens under the Research Funding Program “Improving structural performance and monitoring of damage in nanomodified concrete composites using carbon nanotubes and carbon nanofibers” (200/903).

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Correspondence to Maria G. Falara .

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Falara, M.G., Konsta-Gdoutos, M.S., Gdoutos, E.E. (2019). Enhanced Post-crack Load Carrying Capacity of Nano and Micro Scale Carbon Fiber Reinforced Mortars. In: Gdoutos, E. (eds) Proceedings of the Second International Conference on Theoretical, Applied and Experimental Mechanics. ICTAEM 2019. Structural Integrity, vol 8. Springer, Cham. https://doi.org/10.1007/978-3-030-21894-2_15

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  • DOI: https://doi.org/10.1007/978-3-030-21894-2_15

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-030-21893-5

  • Online ISBN: 978-3-030-21894-2

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