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A system for measuring two-dimensional deformation in a soil bin using video image analysis was developed and evaluated. Soil was placed in the bin [1.22 (wide) 9.1 m long] in 50 mm deep layers of nominally uniform bulk density (1.35 Mg m -3 ) to a total depth of 0.76 m. White polypropylene markers [6.4 (dia.) 25.4 mm] were placed in the soil such that vertical rectangular cross-sectional...
A laboratory system has been developed in which controlled surface loading can be applied to a constructed soil profile and the resultant deformation can be measured accurately in three dimensions. The system utilizes a 10 m 0.9 m 1.3 m rectangular bin composed of ten modular sections. A hydraulically powered carriage controlled by a microcomputer is used to construct soil profiles and apply...