Grouting

Cementitious grouts are cement based materials containing fine aggregates that can be modified using organic polymers. During hydration of the cement, the grout will harden to a rigid material. Such grouts are available with different particle sizes and granulometry. Special microfine cements are very common for pre- and post- injection use, as they are able to fill and penetrate smaller cracks and voids than ordinary portland cement based grouts. Cementitious grouts usually are a cost effective injection solution and the flowability and curing time can be adjusted by the use of admixtures. However, in case of high water ingress, wash-outs can occur and setting might be delayed or hindered due to the dilution effect in very wet strata.

Epoxy resin based grouts are widely used for load bearing plate and direct equipment fixing, especially those under dynamic load and subject to vibration, such as generators, crushers, rolling mills and other special machinery. The correct application of these products is critical to ensure a durable outcome. Sika provides extensive guidance and assistance, including onsite support for complex grouting procedures.