Descripción: “...Residual soils from amphibolite rock located in the San Nicolas valley, near the city of Medellin, have been recovered using thin-walled Shelby tubes and tested. The variation of the shear test speed versus undrained shear strength was evaluated by conducting direct shear tests on undisturbed samples. ...”

Descripción: “...Se subestima el ángulo de fricción pico cuando se calcula con medidas en el contorno comparadas con las obtenidas en la zona de corte.AbstractResults of the direct shear test performed both experimentally and numerical simulations using the discrete element method are affected by the scale, i.e. results depend on both, the particle size and the size of the shear box. ...”

Descripción: “...Nicholas, near the city of Medellin have been recovered and tested. The variation of the speed versus shear strength of the undrained shear strength was evaluated by conducting direct shear tests on undisturbed samples under Unconsolidated and Undrained conditions, soil samples were recovered using shelby thin-walled tubes, graphs of the variation of the shear strength, cohesion and friction angle versus speed and their impact on design. ...”