Laboratory tests on a 25mm thick clay specimen drained on top and bottom show that 50% consolidation takes place in 10.8 min. a. How long will take for a similar clay layer in the field, 4 m thick and drained at the top only, to reach 50% consolidation? (768 days) b. Find the time required for the same clay layer in the field to reach 70% consolidation. (1571.15 d)

Laboratory tests on a 25mm thick clay specimen drained on top and bottom show that 50% consolidation takes place in 10.8 min. a. How long will take for a similar clay layer in the field, 4 m thick and drained at the top only, to reach 50% consolidation? (768 days) b. Find the time required for the same clay layer in the field to reach 70% consolidation. (1571.15 d)

Principles of Geotechnical Engineering (MindTap Course List)

9th Edition

ISBN:9781305970939

Author:Braja M. Das, Khaled Sobhan

Publisher:Braja M. Das, Khaled Sobhan

Chapter11: Compressibility Of Soil

Section: Chapter Questions

Problem 11.15P

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11.15 The time for 65% consolidation of a 19-mm clay specimen (drained at top and bottom) in the laboratory is 10 minutes. How long will it take for a 4-m-thick clay layer in the field to undergo 40% consolidation under the same pressure increment? In the field, there is a rock layer at the bottom of the clay. 11.16 A 3.75 m clay layer in the field (drained on one side) is normally conso
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