Although the rate of setting decreased, the strength of the material improved after the 3rd, 7th and 28th days.
As discussed earlier, there is a period of time after the primary consolidation in which the change in the rate of set-up is very slow (secondary compression).
However, when the change in the rate of set-up is very slow, this is correlated to the aging phase (secondary compression), since the effective stress-related set-up is adequately complete and, hence, the rate of set-up is independent of effective stress during this phase.
The rate of set-up was found to be similar to the other piles tested here, in which, the rate of increase in shaft capacity was higher in the earlier stages (day 1 7) and slowed afterwards.
Svinkin [18] stated that the rate of set-up is linear with time above GWT, while the set-up with respect to the time is a power function below GWT.
The slight increase in pile shaft capacity, after dissipation of the excess pore water pressure, is mainly related to soil aging (secondary compression), since the effective stress-related set-up is adequately completed and, hence, the rate of set-up is independent of effective stress during this phase [32].
In general, the rates of set-up obtained from the laboratory tests conducted by Afshin and Rayhani [11] and those measured in the field seem to be similar.
One of Mr. Nasser's tasks as BHP chairman will be to continue the rate of growth set by Mr. Argus.
Linear Discriminant Analysis (LDA) achieved best distinguished results; the testing rate of predication set was 95%.
