CONSOLIDATION OF DREDGED CLAY IN RECLAMATIONS.

Abstract

Dredged clay in land reclamation undergoes finite strain and considerable change in permeability and compressibility. Realistic predictions of consolidation behavior of soft to extremely soft clay can be achieved using a finite strain formulation with varying permeability and compressibility instead of conventional Terzagh's small strain theory. Such a formulation is developed using a theory which couples the interaction of solid and fluid. The material nonlinearity is incorporated by piece-wise linear e-log sigma prime and e-log k relationships. The effect of initial void ratio profile on the settlement and pore pressure behavior is investigated. The significance of finite strain analysis is highlighted through two case studies associated with reclamation projects.