Carbon Nanofiber/Clinker Hybrid Material as a Highly Efficient Modificator of Mortal Mechanical Properties

Carbon nanofiber (CNF) / clinker hybrid material was prepared by a direct synthesis of CNFs on the surface of clinker particles in a fluidized bed reactor using acetylene and carbon dioxide gases at the temperature of 550°C. This allowed us to achieve a good dispersion of CNFs in a clinker matrix and to prepare strong mortar composite. Optimal concentration of the CNFs to enhance mechanical properties of the mortar was found to be around 0.4%, which led to more than 2.5-fold increase in the compressive strength.