Foundations supporting infrastructure built on soft and compressible marine soil are unlikely to sustain due possibility of undrained shear failure or excessive settlement the soil. This necessitates importance implementing an adequate ground improvement strategy. Among different techniques, reinforcing by installation stone columns is one most successful methods in terms long-term stability fo...

Three different liquefaction mitigation techniques for an earthen embankment resting on saturated loose cohesionless soil have been compared in the present study as densification of foundation soil, stone column mitigation, and hybrid pile-stone mitigation. Numerical modelling has done using finite element assuming plane strain condition. Liquefaction behaviour modelled effective stress-based e...

Abstract This article reviews the numerical approach in stone column practices and presents benefits of columns as a ground improvement soft soil to support an embankment dam. In this article, methodological approaches numerically modeling both 2D 3D studies, well selection appropriate constitutive model are discussed. The for installation validation procedures used ensure accuracy analysis als...

This investigation aims to determine whether it is feasible use the limestone rocks found in Al-Samawa stone quarry southern Iraq as stationary phase column chromatography separation. Together with chromatographic application, physical and chemical characteristics of are examined. SiO2, SO4, PO4, NO3, Cl negative ions, while Ca, Mg, Na, K, Li positive ions. The samples characterized via analysi...

Installation of granular columns is a cost-effective and versatile in situ technique to improve the shear strength, settlement, drainage behavior weak soils. It involves backfilling vertical boreholes ground with materials stiffer than native soil, such as stone or compacted sand. However, massive use overexploitation sand natural aggregates have depleted their reserves recent decades, causing ...

A brief outline of the topics of the course could be as follows. Coalgebras generalise transition systems. Modal logics are the natural logics for coalgebras. Stone duality provides the relationship between coalgebras and modal logic. Furthermore, some basic category theory is needed to understand coalgebras as well as Stone duality. So we will need to learn something about modal logic, about S...

The aim of this study was to improve the characteristics natural collapsible soils using geogrid-encased stone column technique. For purpose, 20 large-scale specimens columns were prepared rigid metal cylinders with a diameter 308 mm and height 97 154 according unit cell theory. aspect ratio 10% 25%. occurrence bulging failure, considered six times diameter. encased geogrids varying stiffness f...