Abstract
The experimental investigation described in this paper deals with the characterization, functionalization, dispersion and use of single-wall carbon nanotubes (SWCNT) in cement-composites. The dispersion of SWCNT was achieved using sonication and modification with a surfactant. The rheological modelling of the SWCNT-surfactant system was carried out, which is shown to reduce the viscosity of the system. In order to better understand the effect of SWCNT in cementitious systems, detailed characterization of the SWCNT and sedimentation tests in water were carried out. To assess the effect on mechanical properties, different loading percentages of the SWCNT were added to the cement mortar, which lead to significant improvement in compressive strength compared to the reference mortar. A threshold dosage range of SWCNT was identified for the optimum mechanical performance of the cement mortar. These results demonstrate the potential of using SWCNT to produce better performing cement-composites.
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