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7 págs.; 8 figs.; 1 tab.The pozzolanic reaction of nanosilica in contact with C3S was monitored via isothermal conduction\udcalorimetry. Since that reaction is affected by heat, its variations with curing temperature (25, 40 and\ud65 °C) were also analysed. The findings showed that while C3S hydration was accelerated by both nSA and\udhigher curing temperature, the former impacted the reaction more intensely. Moreover, the presence of nSA was\udobserved to shorten the acceleration stage during C3S hydration, inducing earlier precipitation of portlandite\udand earlier C-S-H precipitation and nucleation.This research was funded by the Spanish Ministry\udof Education and Science (MAT2006-11705 and\udCONSOLIDER CSD2007-00058), the Regional\udGovernment of Madrid (Geomaterials Programme2,\udS2013/MIT-2914) and the Spanish National Research\udCouncil (PIE: 201160E103). Research fellowship\udBES-2007-16686 is gratefully acknowledged.Peer Reviewe

Calorimetric study of the early stages of the nanosilica - tricalcium silicate hydration. Effect of temperature