The model law of consolidation
If two layers of the same clay with different drainage path lengths H, and H2 are acted upon by the same pressure increase and reach the same degree of consolidation in times ti and t2 respectively, then theoretically their coefficients of consolidation must be equal as must their time factors, Tj and T2:
rj. Cyltl Cv2t2
Equating:
This gives a simple method for determining the degree of consolidation in a layer if the simplifying assumption is made that the compression recorded in the consolidation test is solely due to primary compression.
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