Influence of Organic Esters on Sodium Silicate Sand

The influence of increasing sodium silicate addition and adding organic ester on residual strength and final strength after 24 h of sodium silicate sand was analyzed with orthogonal experiments. The results showed that the final strength after 24 h of sodium silicate sand reached the requirement for the normal sodium silicate sand by adding organic ester, and the reducing of sodium silicate addition amount obviously improved the collapsibilily.