Effect of Water Content (W)
It should be highlighted that the observation presented previously
(namely, the normalized qu-Cm curve is unique regardless ofW) does
not mean the effect of W is negligible. It is just because the normalizing
denominator used in preceding section [i.e., quðCm0, W, t0Þ]
varies withW of the numerator, which suggests that the effect ofW is
included in the normalizing denominator. To develop a new empirical
formula, the effect ofW also needs to be identified alone. This
can be done via normalizing the tested qu by the normalizing denominator
quðCm, W0, t0Þ (varying with soil type and Cm of the
numerator).
Fig. 5 plots the effect ofW on normalized qu data for SingaporeSDF.
Because the range ofW covered by the UCTs for CDMis not extensive
enough (85–115% for S1-A and 125–135% for S2-A; refer to Fig. 2),
the corresponding normalizing denominator quðCm, 160%, 91 daysÞ
cannot be accurately determined using interpolation method. Hence,
the data for CDM are not included in this figure. As shown, the
normalized qu decreases exponentially with the increase in W and
Effect of Water Content (W)It should be highlighted that the observation presented previously(namely, the normalized qu-Cm curve is unique regardless ofW) doesnot mean the effect of W is negligible. It is just because the normalizingdenominator used in preceding section [i.e., quðCm0, W, t0Þ]varies withW of the numerator, which suggests that the effect ofW isincluded in the normalizing denominator. To develop a new empiricalformula, the effect ofW also needs to be identified alone. Thiscan be done via normalizing the tested qu by the normalizing denominatorquðCm, W0, t0Þ (varying with soil type and Cm of thenumerator).Fig. 5 plots the effect ofW on normalized qu data for SingaporeSDF.Because the range ofW covered by the UCTs for CDMis not extensiveenough (85–115% for S1-A and 125–135% for S2-A; refer to Fig. 2),the corresponding normalizing denominator quðCm, 160%, 91 daysÞcannot be accurately determined using interpolation method. Hence,the data for CDM are not included in this figure. As shown, thenormalized qu decreases exponentially with the increase in W and
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