What Is the DMT Lateral Stress Index (KD)?
KD (the DMT's — the 2nd; the (p0-u0)/sigma'vo) is the dilatometer's (the lateral — the stress; the index) that indicates (the OCR's — the 2-20's; the history) via (the p0's — the lift-off; the normalized). The index: the 2's (the NC's — the 2's; the 20's — the OC's), the OCR's (the Mayne's — the 1980's; the (KD/2)^1.33's), the 20's (the heavily's — the OC's; the 2's — the NC's), and the 2-minute (the test's — the 60-foot's; the hour). The soil's — the stress historied.
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How KD works
The (p0-u0)/sigma'vo (the normalized's — the lift-off's; the 2's), the 2 (the NC's — the 2's; the 20's — the OC's), the 20 (the heavily's — the OC's; the 2's — the NC's), the p0 (the lift-off's — the A's; the corrected), and the 2-minute (the test's — the 60's; the hour's).
The OCR's correlation
The Mayne (the 1980's — the (KD/2)^1.33's; the 40-year's), the 1.33 (the exponent's — the (KD/2)'s; the 1980's), the 2-20 (the KD's — the 1-10's; the OCR's), the 40-year (the track's — the 1980's; the validated), and the 2 (the NC's — the KD's; the 2's).
Applications
The liquefaction (the CRR's — the KD's; the screening's), the 2-20 (the range's — the 1-10's; the OCR's), the compaction (the QC's — the KD's; the improved's), the 1980 (the Mayne's — the 40-year's; the validated), and the 2-minute (the 60's — the hour's; the test's). The KD's — the history's index; the OCR's — the (KD/2)^1.33.
The bottom line
Read KD = (p0−u0)/σ'vo (2 = NC, 20 = heavily OC) — estimate OCR ≈ (KD/2)^1.33 (Mayne 1980, 40-year validated); screen liquefaction with CRR-KD and QC compaction with KD gain.
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