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Mechanical Properties and Durability of CNT Cement Composites

2014; Multidisciplinary Digital Publishing Institute; Volume: 7; Issue: 3 Linguagem: Inglês

10.3390/ma7031640

1996-1944

María Del Carmen Camacho, Ó. Galao, F. Javier Baeza, E. Zornoza, P. Garcés,

Concrete and Cement Materials Research

In the present paper, changes in mechanical properties of Portland cement-based mortars due to the addition of carbon nanotubes (CNT) and corrosion of embedded steel rebars in CNT cement pastes are reported. Bending strength, compression strength, porosity and density of mortars were determined and related to the CNT dosages. CNT cement paste specimens were exposed to carbonation and chloride attacks, and results on steel corrosion rate tests were related to CNT dosages. The increase in CNT content implies no significant variations of mechanical properties but higher steel corrosion intensities were observed.