Evaluación de la eficiencia de aditivos aniónicos, catiónicos y anfóteros en la dispersión de nanotubos de carbono para la obtención de pastas y/o morteros de cemento pórtland de alto desempeño mecánico a flexotracción.

The continuous search for new technologies aimed at improving concrete as a construction material, has led researchers to identify the use of carbon nanotubes, as an alternative to increase performance in physical, chemical and mechanical properties in concrete; mainly, the flexural strength resistance is of interest, since it represents approximately 10% of the compressive strength in a conventional concrete, which limits its use when subjected to direct tensile or flexural forces. in the first decade of the 21st century research has been identified where there is evidence of a growth of flexural strength in the matrices of cementing materials due to the inclusion of carbon nanotubes; although it has been shown that the main limitation is its dispersion,establishing itself as the main topic of research in the use of carbon nanotubes in pastes, mortars and concrete portland cement. define the best dispersion conditions as sonication energy, obtained through the power of the ultrasound equipment and the time it is used, in a volume of defined solution with the objective of dispersing a quantity of carbon nanotubes, and through the fisisorción of nanotubos of carbon in agents of high dispersing power and that have high chemical compatibility with the portland cement, are nowadays the points to treat in the investigations of tip. this research will focus on performing experimental development, using instrumental analysis techniques such as ultracentrifuge, total organic carbon, thermogavimetry, among others;that allow to define the best operating conditions, "dispersion energy" in dispersant substances with different chemical principles, focused on improving the dispersion of the carbon nanotubes, in pastes and / or portland cement mortars.

Comparar y definir las mejores condiciones de operación de aditivos aniónicos, catiónicos y anfóteros en la dispersión de nanotubos de carbono para la obtención de pastas y/o morteros de cemento pórtland de alto desempeño a flexo-tracción y compresión.

Metodología propuesta para la dispersión de los ntc. la dispersión de los ntc en agua para posteriormente ser introducidos en la matriz de cemento pórtland es desconocida hasta el momento. en este proyecto se propone una nueva metodología para estudiar esta dispersión y lograr altos desempeños a flexo-tracción y compresión. impacto en el sector de la construcción.