CPTu & In-situ Testing
Terra Monitoring has been at the forefront of in-situ testing and geotechnical instrumentation for the civils and mining industry since 1980. It has consistently and progressively expanded its Geotechnical Instrumentation and In-situ testing equipment portfolio by associating with world-leading manufacturers, to meet the growing demands of our customers in the market.
In-situ Testing services include:
- Permeability tests including Lugeon testing
- Goodman jack testing
- Pile testing
- Plate bearing testing
- In-situ stress measurements
- Pressure Meter testing
- Vibrating Wire Borehole Stress Meter
- Norwegian hydro fracture
- Water sampling and pumping in small diameter boreholes
- Borehole pump tests- large diameter
- Piezometer installation- standpipe
- Packers – conventional and wireline in all sizes.
A cone penetration test with pore water pressure measurement, or CPTu, is a static penetration test with water/pore pressure measurement. While advancing the calibrated probe at a constant advancement rate, the probe records the resistance at the tip (qc), the dynamic pore water pressure (u2) and the local friction between the cone sleeve and the soil (fs). Some of the objectives of conducting CPTu testing are to identify subsurface conditions, soil classification, detect layers, measure strength as well as determine deformation characteristics and the permeability of foundation soils.
Road Interchange, Paarl
CPTu testing for a road interchange in the Paarl area. The project entailed 12 CPTu’s, with augering through the hard layers, to a total depth of 20m.
Khanyisa Power Station
The Apageo Pressure Meter test and other In-Situ tests were done to determine the soil characteristics to be used for assessment of excavation methods and for detailed design of foundations, ground improvement and earthworks.
Fufu Hydropower Project, Malawi
The Ministry of Energy and Natural resources of Malawi commissioned Geomechanics to undertake a geotechnical survey of two potential locations for hydroelectric power stations, one in the north and one in the south of Malawi.
CPTu testing to establish the profile of mine's orebodies
Geomech Africa was recently contracted to help Tronox Fairbreeze mine establish certain geotechnical properties of their orebodies as a basis for future mine expansion.