Analisis Perilaku Struktural pada Balok Beton Bertulang dengan Perkuatan Bio Serat ECC dan Bio Textile ECC Berdasarkan Finite Element Modeling (FEM)

Abstract

This research aims to validate finite element modeling (FEM) with laboratory experimental results of reinforced concrete beams strengthened with bio-fiber ECC and bio-textile ECC, based on their load–deflection behavior. Bamboo bio-fiber and bamboo bio-textile are employed as eco-friendly alternative reinforcement materials, replacing synthetic fibers that are more expensive and less available in rural areas. The use of software such as Abaqus is considered effective in reducing costs, time, and equipment required for research, thereby fostering innovation. Three-dimensional computational analysis has increasingly developed and been widely applied. The analysis type used is static with the Abaqus/Standard solver, while the material model employed is the Concrete Damage Plasticity (CDP). The test specimen consists of a reinforced concrete beam with dimensions of 150 cm × 13 cm × 27 cm, strengthened with bio-fiber ECC and bio-textile ECC layers of 2 cm, 4 cm, and 6 cm thicknesses, modeled to resemble a four-point bending test. The results indicate that the comparison between FEM and laboratory experiments yields an error of less than 3%, with an average error of only 1% overall. Among the variations, the 6 cm bamboo bio-textile ECC layer exhibits the highest load capacity, reaching 100.65 MPa. This study demonstrates that finite element modeling using Abaqus provides accurate predictions of the structural behavior of reinforced concrete beams strengthened with bio-fiber ECC and bio-textile ECC.