The influence of nano-silica on the hydration of ordinary Portland cement

By G. Land, Dietmar Stephan. Journal of Materials Science, 2011

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A study of multiple effects of nano-silica and hybrid fibres on the properties of Ultra-High Performance Fibre Reinforced Concrete (UHPFRC) incorporating waste bottom ash (WBA) (2014, neutral): “The hydration process of cement can be classified into four principle stages [59]: (1) initial phases of dissolved substances; (2) induction period where the C–S–H and portlandite-nucleation begins; (3) the acceleration period begins about one hour after mixing the cement with water; (4) After about”
A review on the properties, reinforcing effects, and commercialization of nanomaterials for cement-based materials (2020, background): “Nano-SiO2, one of the earliest nanomaterials used in cement-based materials, is an amorphous white powder and its microstructure is like a sphere, as shown in Figure 4 [64,65].”
Beneficial role of nanosilica in cement based materials – A review (2013, background): “Accelerated hydration of cement paste and faster formation of calcium hydroxide at initial period was observed in the nanosilica added cement paste [6,45–49].”
Recent advances in understanding the role of supplementary cementitious materials in concrete (2015, background): “Work on nanoscale additions began with nanosilica and research continues into the effects of these materials [52–60], but work is also being extended to other nano-sized particles, including natural pozzolans and clays [61–63] and other oxides used as fillers or nucleation enhancers [64–66].”