Abstract

Cement slurries have been modified with different agents in order to enhance the puzzolanic reaction and increase the calcium silicate hydrate (C-S-H gel) content and therefore, increase their mechanical properties. In particular, nanosilica (NS) particles have been widely used since besides they promote C-S-H gel generation; also prevent pores formation in final cement morphology. In this work NS synthetized by sol-gel method are kept in sol phase in order to preserve the particles dispersion, and then were mixed with cement Portland 30R (CPC 30). Effect of NS content in morphology and mechanical properties of slurries was studied. Optimal NS content was established for the cement slurries formulated according to ASTM standards.