Nano Silica Essay

STANDARDIZATION OF CEMENT MORTAR BY USING COLLOIDAL NANO-SILICA ( Priyanka Sabale, Vrushali Tandulkar, Snehal Randive, Gaurav Mishra, Omkar Sherkar, Deepak Chavan)a
Dr.Milinda Mahajan b , Archana Tanawadec , a Students of Vishwakarma Institute of Information Technology, kondhawa Bk, Pune, Maharashtra,411048 b Professor of Vishwakarma Institute of Information Technology, kondhawa Bk, Pune, Maharashtra,411048
C Assistant Professor of Vishwakarma Institute of Information Technology, kondhawa Bk, Pune, Maharashtra, 411048
Abstract
The objective of this study is to explore the effect of incorporating colloidal nano-silica and replacement of river sand by crushed sand in cement mortar on enhancing mechanical properties and durability. Three percentages of nano-silica with three nominal particle

For each mixture twelve specimens were casted, four each of beam, cube, and cylinder. Three percentages of nano-silica were used (0%, 3%, and 5%) with four percentages of partial replacement of river sand by crushed sand (0%, 33%, 67%, and 100%). Cube size of 70.6mm x 70.6mm x 70.6mm, cylinder of size 94mm x 47mm diameter and beams of size 160mm x 40mm x 40mm were casted. For the compressive strength test, four cubes were tested at the age of seven day, four cubes at the age of fourteen day and three cubes at the age of twenty-eight day. For split-tensile test, three cylinders were tested at the age of seven day, three cylinders were tested at the age of fourteen day, three cylinders were tested at the age of twenty eight day, three cylinders were tested for finding modulus of elasticity at the age of twenty eight day. For flexure test, four beams were tested at the age of twenty eight