Estudo da resistência ao cisalhamento de um solo argilo-arenoso com a inclusão de fibras de polipropileno

Abstract

The use of fibers as a reinforcement of soils is grounded on tecnology of composites materials, where it is searched to created a new material with especific properties and characteristics trough the combination of two or more well-known materials. This work has the object to study the behavior of reinforced soils with fibers of polypropylene submitted in essays of direct shear. The experimental program was made on essays realizations of characterization of natural soil and added soil of polypropylene fibers in the length of 6 mm, 12 mm e 24 mm, in the percentages of 0.25%; 0.5% e 0.75%. In this research it is searched investigate the behaviourism of deformation-tension of reinforced and non-reinforced blended, the effects of length and percentage in the mechanical properties. The global analises of results allow identify changes made by of aleatory inclusion of polypropylene fibers in the studied matrix. The addiction of fibers influences on the upper of parameters of resistency in sheir from peak and after-peak. The effect of fibers inclusion is more evident for larger lenghts and percentages, being the great blend achieved in this work with 0.5% of fibers addiction with 12 mm of length.