APPLICATIONS to GEOTECHNICAL DESIGN - Marchetti DMT
APPLICATIONS to GEOTECHNICAL DESIGN - Marchetti DMT
APPLICATIONS to GEOTECHNICAL DESIGN - Marchetti DMT
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COMPACTION CONTROLSensitivity of <strong>DMT</strong> esp. advantageous.In fact, if Qc is used <strong>to</strong> control compaction:• Since Qc scarcely sensitive <strong>to</strong> sh• Qc reflects PART of the benefit (Dsh mostlymissed !)• Settlement predicted from Qc aftercompaction <strong>to</strong>o big : +200-300%(Massarsch'94). Consequence : compactmore than necessary waste $If Mdmt is used <strong>to</strong> control compaction:• Since Mdmt incorporates sh,compaction• Settlement predictions incorporate benefit ofincreased sh. Waste avoided.Scope of compaction: limit settlements.More rational specs on Modulus than Dr(from SPT/Qc) - Schmertmann, 1986Torino 20 Nov 2001 36
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