Monitoring

In the past, the actual result of a horizontal soil injection was difficult to measure. The Soil-ID monitoring technique, developed in-house, brings an end to the uncertainty in this regard. Our computer-controlled injection units are connected via GRPS (X4 coordinates) with a number of satellites that ensure that the injection unit tracks the injection grid, accurate to the centimetre. This x-y coordinate is sent with Blue Tooth equipment to the operating computer and is recorded here with its own code. Injected points are shown on the operator’s monitor in real time. Via 16 computer-controlled injectors at a time, the exact pre-determined number of litres of waterglass/curing agent are taken to the agreed depth each time and injected there. The computer immediately recalculates the volume of the injection fluid into injected surface area. Because the waterglass spreads in all directions through the soil in a radius of ± 100 cm, a complete compacted ‘carpet’ is laid, made of an impenetrable mixture of waterglass and soil. This layer is one metre thick and is resilient enough to bear a heavy load but also flexible enough not to break.
The entire process is recorded in a transparent report which makes an end to many doubts; measuring is knowing, and the entire process is made reducible. In practice, monitoring proves to be just as watertight as in theory: time and again, the impermeable layers that we realise prove to be highly effective. In most cases, barely 10% of the permitted water volumetric flow rate is used, and sometimes not even that much. A Soil-ID construction pit is watertight.

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