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.
Keywords: cement; reinforcement; compressive strength; synthesis
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