Paper Details

The spherical particles of Nano silica (NS) with controllable size have been synthesized by usingtetraethoxysilane, as a starting material, with ethanol solvent and ammonia as a base catalyst using sol gel method. Themethod is carried out as a trial and error process by varying the concentration of surfactants viz., 2.2g, 2.4g, 2.5g, 2.6g,and 2.8g. The concentration of pH maintained as 8. The result showed that the size of NS increased the concentrationsurfactant also increased but the size of NS is lesser for the concentration of surfactant 2.5g comparatively other. Thecomparatively study of normal cement paste, silica fume varied contents (0.2%, 0.4%, 0.6%, 0.8%, 1%, 2.5%, 5%, 7.5%and 10%) and NS varied contents (0.2%, 0.4%, 0.6%, 0.8%, and 1%). The experimental results of these studies showedthat the compressive strength of fresh paste was increased by increasing the content of NS up to 1% in cement paste. Thesetting time of cement paste was decreased by increasing the content of NS. The nature and morphology of synthesizednano silica was investigated by scanning electron microscopy (SEM), transmission electron microscopy (TEM) and x-raydiffraction (XRD).

P. Govindarasu, M. Mohamed Nasurudeen, B. Yugeshkumar, E. Siva Subramanian, “PRODUCTION OF NANO SILICA USING SOL GEL METHOD BY VARYING THE CONCENTRATION OF SURFACTANT AND TO STUDY ITS BEHAVIOUR IN BLENDED MATERIAL”, International Journal of Advance Engineering and Research Development (IJAERD), Vol. 4, Issue 3, pp. 474-478, March 2017.