Abstract
Results of resonant column tests were used to determine values of low amplitude shear modulus (G0) of a remoulded kaolinite clay for different durations of ageing and for different values of consolidation stress (σ′0) and overconsolidation ratio (OCR). It was found that after completion of primary consolidation the values of G0 increased linearly with the logarithm of time and after a week of confinement the value of normalized rate of secondary increase of shear modulus (N G ) could be reliably estimated. Values of N G were found to derease linearly with the logarithm of OCR and with the logarithm of ageing duration. This similarity of behaviour provided a basis for establishing an equivalency between age and equivalent overconsolidation ratio (OCR)eq. The effects of σ′0 and OCR on the value of G0 were also established in a functional form that indicated a stronger influence compared to that predicted by the Hardin Equation.
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