Interaction between geological and geotechnical investigations of a sandstone residual soil

Weathering zones on metamorphic rocks from Rio de Janeiro—Physical, mineralogical and geomechanical characterization

“…Dobereiner and Porto (1990) presented a similar model for the influence of fissure propagation and development in Massiac gneiss. Martins et al (2005), using both optical and electron microscopy investigations in order to explain important aspects of the geomechanical behavior observed in triaxial tests of rock samples collected from weathering profiles of sandstones arrived to similar conclusions to those presented above. Their study allowed the recognition of important changes in microfracturing, variations in mineralogy of rocks and fine grain formation on more weathered levels and their relevance to geomechanical behavior.…”

Constitutive modeling of residual soils based on irreversible strains decomposition

“…In southern Brazil residual soils from basalt are dominant (Consoli et al, 1998), whereas weathering profiles of granite-gneiss are commonly encountered around São Paulo and Rio de Janeiro (de Mello, 1972). Martins et al (2005) have also reported a residual soil originated from the weathering the Aeolian Botucatu sandstone.…”

Novel particle method for modelling the episodic collapse of soft coastal bluffs

“…The authors believe that this is primarily due to the complexity of the issue at hand, where any such model must consider a wide range of factors in order to attempt to replicate a failure event with any accuracy. These factors include the geological layering (Bromhead and Ibsen, 2004), rainfall and pore water pressures (Caine, 1980;Iverson, 2000), particle orientation and cementation (Martins et al, 2005) and toe erosion (Walkden and Dickson, 2008).…”