BOREMAC Self Boring Pressuremeter
The BOREMAC is a self-boring pressuremeter used to determine the strength and stress-strain properties of fine soils and sands in situ. It bores into place using a standard N-size TEXAM probe, minimising the soil disturbance associated with conventional borehole preparation before the pressuremeter test is carried out.
- Probe diameter
- 73 mm (deflated)
- Maximum working pressure
- 4000 kPa (self-boring mode)
- Overall length
- 180 cm
Overview
In detail
How it works
The BOREMAC uses a standard N-size monocellular TEXAM probe that bores its way into fine soils and sands via a cutting shoe and cutting tool at its base, whose position is adjustable relative to the leading edge of the shoe. A drill rig supplies the insertion force to push the probe into place, the hydraulic force to drive the cutting tools, and the drilling fluid. When the probe reaches test depth, the self-boring operation stops and the pressuremeter test is carried out before boring resumes.
What it measures
The self-boring pressuremeter system is used for the in situ measurement of mechanical properties of fine soils and sands, determining strength and stress-strain properties while minimising the soil disturbance associated with conventional borehole preparation. It is compatible with Roctest's TEXAM control unit.
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Specifications
Technical specifications
- Probe diameter
- 73 mm (deflated)
- Maximum working pressure
- 4000 kPa (self-boring mode)
- Overall length
- 180 cm
- Weight
- 17 kg
- Maximum driving force
- 4 tons
- Cutter rotation
- 50-200 rpm
Related
Often specified alongside
Geosystems
Vibrating Wire Strain Gauge SM-5
- Range
- 3000 µε
- Accuracy
- +/- 0.5% F.S.
- Temp
- −20 to +80°C
- Range
- 200 to 35,000 kPa (standard steps up to 35,000 kPa)
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