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Core Sampling in Geotechnical Drilling
The need for core sampling in geotechnical projects
In most geotechnical and environmental drilling, augers are used to drill in the majority of projects. However, the need still arises to perform core sampling for certain geotechnical projects, usually when the presence of bedrock needs to be confirmed.
Overcoming a sandy situation
A major challenge for any driller is trying to drill with flowing sands. The term flowing sands refers to a mixture of fine sand and water that infiltrates drilling equipment. This problem often arises when using hollow stem augers to perform SPT tests. The flowing sands will enter the hollow stem auger and prevent a driller from obtaining an accurate sample.