Experimental and numerical study of reinforced clay behavior by short vegetal fibers Application for the calculation of the solid waste landfill

摘要

The aim of this paper is the study of the reinforced clay behavior, with an experimental laboratory tests. The considered clay is reinforced by the short vegetal sisal fibers. Many experimental studies have been developed and have shown that reinforced clay by synthetic or vegetal fibers makes late cracks over a wetting path. An experimental study with simple compression, a brazilian tensile and deflexion clay beams tests are engaged. In this paper, an effect of density of fixed length fibers is presented. Also, numerical calculation of clay layer deflexion used in covering of the solid waste landfill is accomplished. Testing results indicate that moduli in compression and tension are different for this several tests. In order to determine the effect of fibers reinforced tensile layer behavior, the bimodularity behavior is examinated across the tensile (brazilian or flexure) and compression tests. It is showed that these properties significantly influence this structure behavior. However, it is not available to translate directly the last interpretation to the solid waste landfill problem, while retaining an elasticity assumption.