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To find pre-consolidation pressure __________ sample is used.

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in Geotechnical Engineering I by (102k points)
To find pre-consolidation pressure __________ sample is used.

(a) undisturbed clay

(b) disturbed clay

(c) gravel

(d) sand gravel

I got this question during an online exam.

The query is from Consolidation of Undisturbed Specimen in section One Dimensional Consolidation of Geotechnical Engineering I

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Right answer is (a) undisturbed clay

Explanation: To find the pre-consolidation pressure, undisturbed clay is used. The disturbed samples can have drastic effects on the pre-consolidation pressure. The effect of sample disturbance on the values of pre-consolidation pressure can be shown by using Schmertmann method.

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