ABSTRACT
This chapter explores most used and effective techniques used in the literature for the Carbon nanotubes (CNTs) dispersion; the ultrasonication/surfactant method in depth for its high relevance in the field of cement-based sensor realization. The efficacious dispersions of multiple layers of graphite superimposed carbon nanotubes in water is, in fact, a key factor for the inclusion of the nanostructured materials in cement matrixes. The terms “solubilization” and “dispersion” of CNTs in water or in organic solvents are improperly used in the literature. There are many physical methods reported in the literature to facilitate the dispersion of CNTs in water or organic solvents; all of them are based on the disaggregation of the fibers and bundles that the CNTs are able to form in the solvents. The ultrasonication procedure is based on the application of sound energy to a sample at ultrasonic frequencies.
