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Cyclic triaxial

Fugro's cyclic triaxial equipment was developed in-house. It is designed to investigate the behaviour of soils when subjected to cyclic or dynamic loading. Ramsey considers that, in many ways it is the most flexible piece of equipment as the radial and vertical stresses applied to the sample can be controlled independently, in almost any predefined manner, says Fugro. This makes it possible to apply a complete earthquake loading event to a sample and observe its behaviour.

The test is considered to be particularly useful for predicting foundation stability under earthquake, wind and wave loading, as well as vibrations caused by construction including piling and tunnelling.

Local vertical and radial strain measurements may also be attached to the test specimen, enabling machine compliance effects at small strains to be eliminated and Poisson's Ratio to be calculated.

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