If a representative clay specimen 20 mm thick, under double drainage, took 121 minutes for 90% primary compression, estimate the time in days required for 50% primary compression of a field layer 2 m thick, bounded by impervious boundary at the bottom and sand at the top. a. 725 b. 679 c. 650

Fundamentals of Geotechnical Engineering (MindTap Course List)
5th Edition
ISBN:9781305635180
Author:Braja M. Das, Nagaratnam Sivakugan
Publisher:Braja M. Das, Nagaratnam Sivakugan
Chapter11: Ground Improvement
Section: Chapter Questions
Problem 11.9P
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Subject: Soil Mechanics

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If a representative clay specimen 20 mm thick, under double drainage, took 121 minutes for 90% primary compression, estimate the time in days required for 50% primary compression of a field layer 2 m thick, bounded by impervious boundary at the bottom and sand at the top.
a. 725
b. 679
c. 650
d. 781
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