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NGI's laboratory in Oslo is equipped with a wide range of advanced testing facilities, including static and cyclic CAU/ CAD Triaxial, static and cyclic Direct Simple Shear, Constant Rate of Strain Oedometer, Resonant Column, Bender Elements and Ring Shear. Testing can also be performed at a wide range of temperatures, from in situ temperatures to over 100°C.

When performing stability tests for the purpose of designing dams and deep excavations, an essential component is the appropriate selection of strength parameters of soils. Due to the fact that on the shear surface we deal with, the principal stress direction rotates, it is important to determine the strength parameters for the compression and the extension loading conditions.

In this short video we demonstrate the hydraulically controlled cell lift on our 250kN load frame. The lifting mechanism allows users easy access to the sample without the need for an external lifting frame.

Diogo Teles a QA, Support and Installation Engineer from GDS Instruments, has recently returned from ITB Bandung in Indonesia, where he installed a GDS Enterprise Dynamic Triaxial Testing System (ELDYN). 

How to change a load cell and load ram in a GDS triaxial system

Soft clay is widely distributed in southeast coastal cities of China, such as Shanghai, Hangzhou and Wenzhou. It has been recognized as one of the most problematic soils in China because of its high water content, high compressibility, low permeability and low bearing capacity. In the past decades, a large number of infrastructure projects have been constructed on this kind of soil. After years of operation, large settlements of the subgrade have been observed.

GDS’ office will close at 3pm on Friday the 21st of December, re-opening on Wednesday 2nd of January at 9.00am.

Over the last four years GDS has been developing state-of-the-art Adaptive Control technologies that provide high-performance, high-accuracy dynamic control with unparalleled precision. The ADVDCS V2 is the direct result of this research and contains machine learning algorithms that adapt in real-time to dynamic changes in sample compliance thereby delivering excellent control over the full machine performance envelope.

GDS held their international agents conference in Hampshire last week. 19 agents from 15 countries visited GDS for three days of networking and product demonstrations. During the conference GDS visited GEOLABS commercial laboratory in Watford, for a tour of their laboratory and to hear a talk from Dr John Powell. 

19 representatives from 15 countries made Hampshire their home last week for the GDS Instruments agents conference. The three day conference comprised of presentations, focus groups, product demonstrations, customer visits as well as time to socialise with staff and enjoy some english hospitality.