SHRINKAGE COMPENSATED, HIGH FLUIDITY FILLED GROUT

Preparation
The substrate must be clean and completely free from contaminants including greases, oil and loose material.

To avoid absorption and reduction in flow characteristics, it is essential that the prepared substrate is soaked with clean water for a few hours prior to grouting. Prior to placing the grout any water remaining on the surface should be removed by blowing clean with oil free compressed air.

The underside of the base plate to be grouted should be clean and any oil or grease MUST be removed. The underside should preferably have no geometry, which would impede the flow of grout. Should cruciforms be present, it is essential that air release holes are drilled through the base plate to avoid trapping air hence reducing the total contact area.

All formwork should be sealed to prevent loss of grout during pouring. The formwork should be tight to the base plate and parallel to the direction of flow. A gap of around 100mm is required at the pouring hopper with a gap of around 50mm at the opposite end.

Cross Section of typical grouting formwork


Mixing
SpECgrout C3 is a one-part cementitious grout.

SpECgrout C3 must be mixed using a slow speed electric drill fitted with a suitable mixing paddle (SpEC Technical Department can advise). This method is suitable for small quantities and for larger quantities it may be necessary to consider the use of a grout pump. Please contact SpEC Technical Department for more advice on the type of pumps available.

Good planning is essential to ensure a continuous flow of grout once pouring commences.

The specified water quantity should be measured in an accurately graduated vessel and added to the mixer. The bagged powder is then added slowly whilst mixing. A mixing time of not less than five minutes is required to ensure adequate dispersal of the ingredients.

The recommended water used per 25kg bag is 3.0 to 3.3 litres.

The product cannot be mixed by hand

Application
The grout should be poured immediately after mixing and certainly not more than 20 minutes after mixing is complete to take full advantage of the high flow properties.

Again, planning is imperative to ensure that sufficient grout is available to allow continuity of placing. The mixed product should always be poured from the hopper end of the formwork. On no account should grout be poured from more than one side of the base plate. Maintenance of a fluid head is essential to avoid air entrapment.

Once the grouting has been completed, all exposed areas of grout should be cured immediately using SpECcure AC curing membrane.