-0.1318 Plot sample deformation as a function of root time and determine graphic

Question

-0.1318

Plot sample deformation as a function of root time and determine graphically t90 in accordance with the methods outlined in your textbook.
Identify primary and secondary consolidation on the deformation vs. root time plot

Please provide Excel diagram and type the process

Time(min) Deformation(in) 0 -0.1052 0.003 -0.106 0.007 -0.107 0.024 -0.1089 0.032 -0.1092 0.116 -0.1139 0.199 -0.1169 0.283 -0.1191 0.449 -0.1217 0.7 -0.1242 0.951 -0.1259 1.452 -0.1272 2.45 -0.1284 4.452 -0.1303 4.952 -0.1303 9.953 -0.1317 10.011

-0.1318

Explanation / Answer

Process -

A straight line is fitted to the first part of the curve and has a slope of 1.0.A second line is drawn lower than the first one by a factor of 1.15.The point where this second line cross the curve is assumed as 90% consolidation.

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