START GROUTING

After taking the measurements the grouting can be started. For guidance about this see the items listed in the right hand column under the heading "How to grout a hole".

Reading a dipstick.

The photo shows use of a dipstick to measure the volume of grout in an agitator. The dipstick has been put into the agitator (at back) and then withdrawn to show the depth of the grout in it, which indicates the volume. The grout level is near the operator's left hand.

Flow meters placed on the circulation line are an alternative to dipstick measurements.

Readings in the agitator should be taken about every 10 or 15 minutes, or taken continuously if flow meters are in use. These readings help determine whether the mix should be thickened and enable assessment of the grouting as it proceeds.

The grout level in the agitator must not be allowed to become so low that air is sucked into the line. A fresh batch of grout should be prepared in the mixer in advance, and added in the agitator when needed. The proportions of this topping-up grout are given below:

TOPPING-UP

Enter the WATER : CEMENT ratio in use : 1

After entering the W : C ratio, click on the CALCULATE button

Amount of CEMENT in batch, measured in BAGS =

                1            2            3            4            5 bags

WATER =    Cu Ft    Cu Ft    Cu Ft    Cu Ft    Cu Ft

Mix Volume Cu Ft    Cu Ft    Cu Ft    Cu Ft   Cu Ft
.........after cement added

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