"Numerical Modeling and Performance Analysis of Rubberized Engineered Cementitious Composite (RECC) Beams Reinforced with Different Types of Rebars''
Volume Title: ICASGE2025
Paper ID : 1140-ICASGE-FULL
Authors
Abstract
This study investigates the structural performance of rubberized engineered cementitious
composite (RECC) RC beams reinforced with Different types of rebars under static loads through
finite element modeling (FEM). Recent studies explore the use of rubber waste in ECC to improve
sustainability, given rubber’s wide availability. Rubber, used as a partial aggregate replacement or
as fiber in concrete, improves the ductility, tensile, and compressive strength of the composite. In
particular, rubber fibers (2-4 mm, at 0.5% and 1% of cement weight) enhance concrete’s
mechanical performance. In this study. The finite element analysis was
performed and its results were verified against experimental ones available in the literature,
showing good agreement ,significantly improve ductility, flexural strength, energy absorption,
and crack control under static loads. A hybrid section combining conventional concrete and RECC
was shown to reduce compression damage effectively. Results reveal that RECC layers,
particularly on the tension side .The hybrid section
using both conventional concrete and RECC reduces compression damage also longer
fibers and thinner diameters significantly reduced crack width.Waste tire rubber is an
environmental concern, can thus be effectively managed in ECC, where it increases ductility,
energy absorption, and post-collapse resilience. Additionally, finite element modeling confirmed
that rubberized ECC composites mitigate brittleness and enhance energy absorption, sustaining
loads and deflections post-failure without complete structural collapse. However, higher sand
content negatively impacts flexural performance. The validated FE models were extended to
conduct parametric studies, offering further insights into optimizing material composition and
performance.
composite (RECC) RC beams reinforced with Different types of rebars under static loads through
finite element modeling (FEM). Recent studies explore the use of rubber waste in ECC to improve
sustainability, given rubber’s wide availability. Rubber, used as a partial aggregate replacement or
as fiber in concrete, improves the ductility, tensile, and compressive strength of the composite. In
particular, rubber fibers (2-4 mm, at 0.5% and 1% of cement weight) enhance concrete’s
mechanical performance. In this study. The finite element analysis was
performed and its results were verified against experimental ones available in the literature,
showing good agreement ,significantly improve ductility, flexural strength, energy absorption,
and crack control under static loads. A hybrid section combining conventional concrete and RECC
was shown to reduce compression damage effectively. Results reveal that RECC layers,
particularly on the tension side .The hybrid section
using both conventional concrete and RECC reduces compression damage also longer
fibers and thinner diameters significantly reduced crack width.Waste tire rubber is an
environmental concern, can thus be effectively managed in ECC, where it increases ductility,
energy absorption, and post-collapse resilience. Additionally, finite element modeling confirmed
that rubberized ECC composites mitigate brittleness and enhance energy absorption, sustaining
loads and deflections post-failure without complete structural collapse. However, higher sand
content negatively impacts flexural performance. The validated FE models were extended to
conduct parametric studies, offering further insights into optimizing material composition and
performance.
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