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  Mesocrystalline calcium silicate hydrate : a bioinspired route toward elastic concrete materials

Picker, A., Nicoleau, L., Burghard, Z., Bill, J., Zlotnikov, I., Labbez, C., et al. (2017). Mesocrystalline calcium silicate hydrate: a bioinspired route toward elastic concrete materials. Science Advances, 3(11): e1701216. doi:10.1126/sciadv.1701216.

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 Creators:
Picker, Andreas, Author
Nicoleau, Luc, Author
Burghard, Zaklina, Author
Bill, Joachim, Author
Zlotnikov, Igor1, Author              
Labbez, Christophe, Author
Nonat, André, Author
Cölfen, Helmut, Author
Affiliations:
1Peter Fratzl, Biomaterialien, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_1863294              

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 Abstract: Calcium silicate hydrate (C-S-H) is the binder in concrete, the most used synthetic material in the world. The main weakness of concrete is the lack of elasticity and poor flexural strength considerably limiting its potential, making reinforcing steel constructions necessary. Although the properties of C-S-H could be significantly improved in organic hybrids, the full potential of this approach could not be reached because of the random C-S-H nanoplatelet structure. Taking inspiration from a sea urchin spine with highly ordered nanoparticles in the biomineral mesocrystal, we report a bioinspired route toward a C-S-H mesocrystal with highly aligned C-S-H nanoplatelets interspaced with a polymeric binder. A material with a bending strength similar to nacre is obtained, outperforming all C-S-H–based materials known to date. This strategy could greatly benefit future construction processes because fracture toughness and elasticity of brittle cementitious materials can be largely enhanced on the nanoscale.

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 Dates: 2017
 Publication Status: Published in print
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 Identifiers: DOI: 10.1126/sciadv.1701216
BibTex Citekey: Pickere1701216
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Title: Science Advances
  Other : Sci. Adv.
Source Genre: Journal
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Publ. Info: Washington : American Association for the Advancement of Science
Pages: - Volume / Issue: 3 (11) Sequence Number: e1701216 Start / End Page: - Identifier: ISSN: 2375-2548