15 May 2017
Direct sampling allows to derive parameters of great use for the evaluation of the mechanical properties (strength and deformation), and chemical and physical properties of the […]
15 May 2017
The technique known as the Ecometer is a non-invasive methodology used in geophysics for the study of the integrity of structural elements. Non-destructive vibration testing on […]
15 May 2017
Geophysical logging is the process of recording and observing measurements of physical properties made in wells or holes. Probes that measure different properties are lowered into […]
6 November 2019
The concept behind this method is that the tensile force required to pull a metal disk, together with a layer of concrete, from the surface to […]
6 November 2019
Combined methods involves a combination of NDT methods for predicting the on-site strength of concrete. The combination of Ultrasonic Pulse Velocity and Rebound hammer has been […]
15 May 2017
Sonic technique is an acoustic exploration, and analyzes the propagation of the signal inside the material with frequencies up to 20 kHz. The method uses higher […]
6 November 2019
The methods based on the rebound principle consist of measuring the rebound of a spring driven hammer mass after its impact with concrete. The test has […]
6 November 2019
Rebar location is a central activity for anyone involved in on-site testing of reinforced structures. Locating rebars is a necessity when drilling, cutting coring as well […]
15 May 2017
The Deviation Probe is used to measure the borehole deviation. A three-axis magnetometer measures the azimuthal direction of the borehole and a dual tilt sensor provides […]
15 May 2017
Gravimetry is a geophysical technique in which the Earth gravitational attraction is observed and interpreted in terms of mass distribution over space/time. In principle any process […]
15 May 2017
Magnetometry measures in an area the perturbations of the magnetic field caused by contrasts in magnetic susceptibility (where susceptibility is the ability of a substance to […]
15 May 2017
Magnetotellurics Magnetotellurics (MT) refers to a technique in which electrical resistivity is determined by doing measurements of electric and magnetic fields related to naturally occurring currents […]
15 May 2017
Thermal resistivity testing measures the capacity of the ground to conduct or dissipate heat. An accurate knowledge of the thermal properties of a soil (natural or […]
15 May 2017
The Ground Penetrating Radar (GPR) is a non-invasive method used in geophysics to investigate the most superficial part of the subsoil. The technique is based on […]
15 May 2017
When a current is passed through earth materials not enclosing metallic minerals, the amount of current is related to the driving potential only by the electric […]