Nonlinear modeling of a bamboo bio-concrete beam

Resumo

Concrete is one of the most consumed materials in the world, so it is essential to promote the
sustainable development of this material. For this, it is possible to obtain environmental benefits through the
substitution of cementitious materials and/or aggregates. Bamboo is a material that has been used in several
studies as an aggregate in the production of bio-concrete, through the pressing procedure or conventional
techniques for manufacturing concrete. One way to evaluate the quality of this material is by analyzing its
mechanical behavior, either by experimental procedures or numerical modeling. The objective of this study is to
perform numerical simulations of a bamboo bio-concrete beam imposing different cracking models and tensile
laws, and compare the numerical results to the experimental ones collected from the literature. The results
indicated that the Rotating cracking model represented better the experimental load versus deflection curve than
the Fixed crack model. Furthermore, all tensile laws showed consistent results by varying only their intrinsic
characteristic of tensile softening.