Utilisation of extrusion method in geotechnical tests: conception and theoretical analysis

Abstract Extrusion method has been utilised in a variety of product-processing units such as metal casting and food processing. The process extruding is relatively fast reproducible, more importantly, can benchmark shear resistance extruded materials. These advantages have propelled researchers to practice the extrusion determine soil properties, e.g. Atterberg limits strength. Although mechanics behind remains less understood, studies verified feasibility benchmarking. This study presents theoretical basis underpinning by extending conventional slab analysis model entire extruding. developed analytical original assessing dead material zone considering dynamic move novel enhances accurate estimation pressure builds solid foundation for developing tests geotechnical engineering. In addition, described explains reasons observing some discrepant correlations other parameters due different deformation mechanisms among test methods.