Abstract
This paper discusses the use of fly ash to alter, for similitude purposes, the dynamic properties of artificial clay used in shaking table physical model studies. The fly ash used in this study acted as a chemically reactive material when mixed with an artificial kaolinite-bentonite model clay. When added to the model clay, the fly ash stiffened the soil without having a significant effect on the soil’s undrained shear strength. To avoid increasing the strength of the model soil, the fly ash-clay mixture had to be thoroughly remolded several days after initial mixing. The results of this work were successfully incorporated into a 1-g shaking table study of seismic soil-pile-superstructure interaction in soft clay.
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