What Is a Dilatometer Test in Geotechnical Engineering?
Dilatometer tests (the DMT — the Marchetti's; the blade's) measure (the in-situ — the lateral; the stress's) by expanding (the membrane's — the 1mm; the blade's — the driven) against (the soil's). The test: the ID (the material's — the index), the KD (the stress' — the history), the M (the constrained — the modulus), and the Su (the undrained — the clays'). The soil's — the laterally tested.
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How DMT works
The blade (the 95mm — the driven; the 20cm's — the intervals), the membrane (the 1mm — the expanded; the A/B's — the pressures), the indices (the ID's — the material's; the KD's — the stress's; the ED's — the modulus'), and the speed (the 2-minute — the test's; the continuous's — the seismic's).
The parameters
The ID (the material — the index; the clay's/sand's/silt's), the KD (the horizontal — the stress; the OCR's — the history), the M (the constrained — the modulus; the settlement's), the Su (the undrained — the clays'; the correlated), and the Vs (the seismic's — the SDMT's; the shear wave's).
Applications
The settlement (the M's — the 1D; the footings'), the liquefaction (the KD's — the CRR's; the screening), the piles' (the lateral — the p-y's; the calibrated), the compaction (the KD's — the improved; the QC's), and the SDMT (the seismic's — the Vs's; the G0's). The DMT is the efficient — the parameters' suite.
The bottom line
Use Marchetti DMT for ID/KD/M/Su profiling — design 1D settlement from constrained modulus M, screen liquefaction with KD, and add seismic module (SDMT) for Vs.
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