Cone Head/Knight of the Blade to conquer soils
Geotechnical In-situ Testing by CPTu and DMT
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(Adopted from Prof. Paul. Mayne)
Schematic of SCPTu
Correlation between Cone Penetration Test (CPTu) and Flat Plate Dilatometer (DMT)
Typical Cone Penetrometers
- Electronic Steel Probes with 60° Apex Tip
- ASTM D 5778 Procedures
- Hydraulic Push at 20 mm/s
- No Boring, No Samples, No Cuttings, No Spoil
- Continuous readings of stress, friction, pressure
Typical Flat Plate Dilatometer (DMT)
- Stainless steel blade with a flat circular steel membrane mounted flush on one side
- ASTM D6635-15 Procedures
- 20cm-30cm depth increment
- two pressure readings: A and B for different displacement configurations (by air/oil)
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