Katsutada Onitsuka

Consolidation by vertical drains under time‐dependent loading

A solution for the consolidation by vertical drains under time-dependent loading is presented in this paper. Considering the well resistance and the smear action, the simultaneous basic partial differential equations of the consolidation by vertical drains are obtained for the arbitrary loading method. However, the impulse function method cannot be directly applied to obtain the solution. The partial differential equations and the solution conditions that satisfy the impulse function method are obtained after some mathematical processing. The solution for the consolidation by vertical drains under time-dependent loading is obtained by virtue of the impulse function method and the solution under instantaneous loading. The solutions under single ramp loading and multi-ramp loading are obtained and the feasibility of Carrillos method under time-dependent loading is discussed. Further, the characteristics of the consolidation by vertical drains under instantaneous loading and time-dependent loading are discussed. Copyright

EVALUATION OF LIME-STABILIZED ARIAKE CLAY WITH FOAMING WASTE GLASS AS PAVEMENT MATERIALS

Foaming waste glass, a new material produced from waste glass, is first briefly introduced. Secondly, the preliminary findings of the engineering properties required for improved pavement materials, namely unconfmed compressive strength qu, compressive splitting strength qs and the CBR value of the lime–stabilized Ariake clay (LA) with foaming waste glass (LAG) mixture, are presented on the basis of a series of laboratory tests. The potential effectiveness of foaming waste glass as a partial replacement for lime on the strengths of the LAG mixture is indicated by a comparison with lime-stabilized Ariake clay. A process for evaluating stabilized materials as pavement materials is described based on the results of a uniaxial test and pavement structure analysis. It is concluded that foaming waste glass can be effectively applied as a partial replacement for lime for the improvement of soft clay and that the LAG mixture could be used as pavement materials, considering not only its strength but its deformatio...