**Author details**

#### Elena Cerro-Prada

Address all correspondence to: elena.cerro@upm.es

Civil Engineering Department – Construction, Infrastructure and Transportation, Technical University of Madrid (UPM), Madrid, Spain

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[14] Jennings HM. Model for the microstructure of calcium silicate hydrate in cement paste.

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Conference on Nanotechnology (IEEE-NANO); Pittsburgh, PA; 2017. pp. 208-213

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CO<sup>2</sup>

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[17] Ma B, Li H, Mei J, Li X, Chen F. Effects of nano-TiO<sup>2</sup>
