Estudo da viabilidade do uso do bambu em vigas de concreto armado em substituição ao aço

Abstract

Bamboo's performance as longitudinal reinforcement in reinforced concrete structures can be successful if safety boundary conditions are considered. The objective of this work is to evaluate the feasibility of replacing bamboo as tensile reinforcement in insulated beams of reinforced concrete, submitted to bending dimensioned to the ultimate limit state, and the influence of adhesion between the proposed materials. Dendrocalamus Asper bamboo stem specimens were subjected to fiber parallel tensile, fiber parallel compression and shear tests in accordance with the guidelines determined by ISO 22157, Part I and Part II. Regarding the flexural traction, the behavior of the surface treatment 1 showed that the use of bamboo as longitudinal reinforcement in the beams is structurally viable because the bamboo reinforced oncrete beam, treated with varnish and coarse sand, reached a medium strength of 14,18 MPa when tensioned, considering the ultimate limit state compared to the steel-reinforced concrete beam which obtained an average strength of 17,56 MPa (sic).