- On 3rd January 2017
- In Engineering, Sediment Management
- By William
On the 1st-2nd December 2016, Exo Environmental visited École des Mines de Douai (USAR Partners) to work with their civil engineering department to run some GeoBlock test samples. Several tests are currently being carried out to determine the strength and durability of the samples. These tests include, among others; unconfined compressive strength (UCS), dynamic Young’s modulus, leaching, freeze-thaw and drying tests.
The test results will be vital in the understanding of the functioning of the GeoBlock samples, made using sediment from Brightlingsea, Essex. This heterogenic sediment contained silty clay with traces of sand, gravel, shell, wood and debris. The results will allow us to identify where possible improvements can be made, such as the binder mixture and production methodology used for different sediment types.
The aim of this on-going research is to achieve a successful business case for the GeoBlock. To realise this, sediment should comprise 80-90% of the block with a minimal requirement for expensive binders. Whilst sediment has previously been successfully utilised in civil engineering with lower percentages, due to the physically heterogenic sediment, high organic matter, high moisture content and possible contamination, this project presents a real challenge. However, the initial results look extremely promising!