is an expansive admixture.when mixed with cement,Sika Grout Aid,a good quality grouting mortar is obtained.Sika Grout Aid,and and water on site, can be used to grout bridge bearings, produces a non-shrink grout.Sika Grout Aid,machine foundations,anchors,etc. Use Sika Grout-Aid,steel coluns as well as inverted construction methods