Effect of nano-SiO2 and nano-TiO2 addition on the rheological behavior and the hardened properties of cement mortars

► Factorial design is used to identify interaction of nano-SiO2 and TiO2 in cement mortars. ► Effects on the rheology and at long term on the hardened mortars were evaluated. ► Spread on table and yield stress relationship can be represented by power equation. ► Mechanical performance was limited by maximum dosage of additives defined by rheology.