Effectiveness of Nanotubular Additives in the Modification of Cement Systems

Abstract

Tubular chrysotile and carbon nanoparticles have been shown to effectively influence the hydration and hardening kinetics, structure formation, and strength of cement systems. Similar in crystal-chemical structure to newly formed hydrated phases, chrysotile nanotubes are the most effective modifier, ensuring a factor of 30 increase in the rate of hydration and hardening processes and a factor of 3 increase in the strength of cement stone. Chemically inert with cement clinker minerals and clinker hydration products, carbon nanotubes ensure a factor of 9 increase in the rate of hydration and hardening processes and a factor of 1.5 increase in strength.