FOR MACHINE FOUNDATION, ANCHOR BOLT GROUTING ETC. TUFF GROUT GP It is a non shrink, High strength, free flowing non mettalic grout. For machine foundation, base plates, anchor bolts, generator and turbine foundations, etc. TUFF GROUT (SPL) Non shrink, ultra high strength, free flowing, non metallic, multipurpose grout.For machine foundation, base plates, anchor bolts, generator and turbine foundations, etc. TUFF GROUT (FSG) Excellent high strength, super plasticizer, shinkage compensating, chloride free grout additive. Ideal for static load, bed grouting etc.