- Products
- AXILOG II vibration monitoring system
- BGCMAP rate of corrosion tester
- Dynasen shock pressure sensor products
- Foundation integrity testing products
- Foundation load testing products
- PARAS parallel seismic test system
- PLATEMAN plate load tester
- SB2010 large scale shear box
- SCXT3000 cross hole sonic logging system
- Signal Lever Force Indicator (SLFI)
- SPTMAN hammer energy tester
- TDR2-S concrete slab tester
- Measurement and control
- Asset management
- Smart Asset Management System™
- Bridge monitoring
- Building monitoring
- Rail monitoring
- Tunnel monitoring
- Wind turbine monitoring
- Request a demonstration
- Bridge crack monitoring
- Bridge strike monitoring
- Bridge deflection and displacement
- Bridge load testing
- Hidden bridge defect detection
- Over-height vehicle detection
- Scaffold and ladder testing
- Barrier and balustrade testing
- Commercial shelving and display unit testing
- Below ground corrosion assessment
- Bi-directional static load testing
- Cross hole sonic logging
- Dynamic pile testing
- Parallel seismic testing
- Pile integrity testing
- Static load testing
- Bituminous materials testing
- Chemical testing
- Concrete material testing
- Plate load testing
- Pyrite investigation and testing
- Soils and aggregate testing
- Specialist testing
- Coring and pavement analysis
- Falling weight deflectometer
- Radar surveys
- Utility reinstatement testing
- Corrosion surveys
- In-situ concrete testing
- Structure condition surveys
- Wind farm noise assessment
- Bridge bearing condition services

Below ground corrosion assessment
Using our own specially developed equipment, JFTS provides a below ground corrosion assessment service as an alternative method to traditional excavation techniques.
Understanding the performance of metals when buried in soils and the rate of corrosion enables structure service life to be determined with reasonable accuracy.
Traditional excavation methods can be a very costly and time consuming assessment of underground corrosion. JFTS' alternative technique, using our own specially developed equipment provides a more efficient and less intrusive way to evaluate corrosion rates.
Below ground corrosion assessment methodology
Corrosion of a steel element embedded in the ground is a chemical reaction, whereby iron, oxygen and water react. Using our BGCMap system, the below ground corrosion assessment operates by applying a current and recording the change in electric potential occurring between the systems half-cell and the corroding sample.
An electrode spike is driven into the ground within 1 meter of the component, to the depth of at least 200 millimetres. The BGCMap unit is connected to the component and the electrode using heavy duty steel clips. Any surface coating at the point of contact is removed.
The copper / copper sulphate half-cell is then inserted firmly into the ground, in a small hole excavated alongside the test component. The test is automatically conducted by the BGCMap, which applies the current and records the voltage. The GPS coordinates, date and time of the test are all also recorded.