In an unconsolidated undrained triaxial test, the soil specimen is:
Correct answer: A. Neither consolidated nor drained before shearing
- A. Neither consolidated nor drained before shearing
- B. Consolidated but not drained before shearing
- C. Consolidated and drained before shearing
- D. Drained but not consolidated before shearing
Explanation
In the unconsolidated undrained test, drainage is prevented during both application of cell pressure and shearing. Therefore, the specimen is neither allowed to consolidate nor to drain before failure.
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About Soil Mechanics and Foundations
Soil mechanics examines index properties, phase relationships, classification, permeability, seepage, compaction, consolidation, shear strength and earth pressure. Foundations apply these principles to bearing capacity, settlement and shallow or deep foundation selection, with clear distinction between compaction, which expels air, and consolidation, which expels water over time.
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