Numerical analysis on displacements of steel-fiber-reinforced concrete beams

Abstract

This work deals with parametric analyses of the structural behaviour of steel-fiber-reinforced concrete using a Damage Constitutive Model and homogenization technique. This approach is contemporary once Brazil has not a standard procedure for the design of this type of material. The present study performs a parametric analysis of rectangular beams subjected to flexion at four points, with height variations (h), reinforcement area (As) and span (L) are used to verify the influence of each parameter on the numerical study of the deformability of beams composed by this material. Fiber volume concentrations of 2.00% and 2.50% have been used on the modelling. It is observed that the obtained results were mainly affected by height and span. It is noticeable that the inclusion of steel fibers leads to an increase in the maximum load and ductility of the analyzed beams in this work.

Computational Fracture Evolution Analysis of Steel-Fiber-Reinforced Concrete Using Concrete Continuous Damage and Fiber Progressive Models

“…The contact density model [ 38 , 39 ] was formulated on the basis of continuous damage mechanics (CDM). The crack surface is presented as a set of potential, infinitely small contact planes between which there is contact stress acting perpendicularly to their surface.…”

Utilizing Polypropylene Fiber in Sustainable Structural Concrete Mixtures

“…Test results from previous studies are illustrated in Table 1 [9][10][11]. It is evident that polypropylene fibers show versatile mechanical characteristics.…”