HIGH STRENGTH, SHRINKAGE COMPENSATED CEMENTITIOUS GROUT

Preparation
It is essential that adequate preparation is carried out prior to the application of SpECgrout C1. This preparation should ensure the removal of all grease, 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. Before 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 consequently 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.

Mixing
SpECgrout C1 is a one-part cementitious grout.

SpECgrout C1 must be mixed using a slow speed electric drill fitted with a SpEC Mixing Paddle. This method is suitable for small quantities and for larger quantities it may benecessary to consider the use of a grout pump. Please contact SpEC Technical Department for more advice on the type of pumps available.

The product cannot be mixed by hand

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 mixing vessel. 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 5.5 litre to 7.25 litre (for plastic/flowable consistency).

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.

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.