Grout Pumping and Injection Operations TR 003 The grout mixes are set out in batch cards that give all the material components to be mixed in the order that they are to be put into the grout mixer, i.e. water – additives – cement in that order. In this example; Mix defined as Water Binder ratio of 1.2 The grout plant has a 200 litre mixer; it has an efficient capacity of 70-85%, so batch size of approx 140 - 170 litres is recommended. For a 150 litre batch of grout – 99 litres water, 1.5 litres superplasticiser, 23 litres GroutAid and then 4 x 20kg bags cement Before starting to mix grout, ensure that the mixer and agitator are empty and clean and that Mixer tube valve is in the “mix” position. ▪ Water – is batched via the digital water meter on the plant. Preset the quantity of water and press go – it will put the preset quantity of water into the mixer ▪ Start the Grout Mixer using the control lever, rotate to the right.
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