PRELIMINARY STUDY ON THE USE OF BURITI FIBER AS REINFORCEMENT IN A FLOOR INFRASTRUCTURE LAYER

• DOI: 10.22533/at.ed.3173152308057

• Palavras-chave: buriti fiber, pavements, mechanical behavior, permanent deformation.

• Keywords: buriti fiber, pavements, mechanical behavior, permanent deformation.

• Abstract:

  This work aims to evaluate the influence of Mauritia Flexuosa fiber (buriti) as a reinforcement material in layers of pavement infrastructure. In the experimental procedure, two types of soil LA' and NG' were used according to the MCT classification and buriti fiber with dimensions of 20 mm. For the manufacture of cylindrical specimens (10 cm x 20 cm) the fiber content added to the soil was 0.75% in relation to its dry mass randomly distributed. In addition to the traditional characterization tests, tests of modulus of resilience (MR), permanent deformation (DP) at low stress (σ3=0.04 MPa and σd =0.08 MPa) and verification of the occurrence of Shakedown and test for determination of the Poisson coefficient in the specimens with and without fiber The results demonstrate that the fiber was sensitive to the LA' soil, that is, the fiber-matrix interaction with the sandy soil showed better MR results (composite model) and DP curves adjusted with R² > 0.9 in the model by Guimarães (2009). In clayey soil (NG'), the fiber had little influence on its mechanical behavior.