5 results on '"Azimi, Sayed Javid"'
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2. Structural Behaviour of Kenaf Fibre Lightweight Concrete Beams Modelling Via FEM-Abaqus
- Author
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Azimi, Sayed Javid, Kaiwaan, Abdulhai, Azimi, Sayed Alem, Azimi, Sayed Javid, Kaiwaan, Abdulhai, and Azimi, Sayed Alem
- Abstract
This study presents the structural properties of oil palm shell kenaf fibre Lightweight concrete (OPS-KFLC) beams. The main objective of this research was to investigate the potential advantage of kenaf fiber for improving the structure properties of OPS-RC beams. This investigation carried out by two methods experimental and consequently numerical modelling. The experimental work focused on two beams. First beam constructed with full shear reinforcement and without fibre (SI = 0% and with Vf = 0%) denoted as a control beam. Meanwhile one more beams with full shear reinforcement (SI = 0%) and with fibre volume fraction of Vf = 1% constructed respectively. The experimental work has been considered four point flexural tests on simply supported beam. Consequently, numerical modelling with finite element method FEM software Abaqus for calibration and validation of experiment results considered. First, sensitivity analysis (mesh and time) conducted up to acquire the best correlation with experimental result. Then, the experiments result of beams was used, for calibration in FEM modelling investigation. The results comparison showed that there is a good agreement between the experimental test and nonlinear finite element analysis NLFEA results. Generally, this investigation demonstrated up to 37% improvement on structure properties of OPS-RC beam by addition of Vf = 2%kenaf fiber., Este estudio presenta las propiedades estructurales de vigas de concreto ligero de cáscara de palma de acei-te con fibras de kenaf (OPS-KFLC). El objetivo principal de esta investigación fue investigar la ventaja potencial de las fibras de kenaf para mejorar las propiedades es-tructurales de las vigas de OPS-RC. Esta investigación se llevó a cabo mediante dos métodos: experimental y, consecuentemente, modelado numérico. El trabajo experimental se centró en dos vigas. La primera viga se construyó con refuerzo completo de cortante y sin fibras (SI = 0% y con Vf = 0%), denominada como viga de control. mientras tanto, se construyó una viga más con refuerzo completo de cortante (SI = 0%) y con una fracción de volumen de fibras de Vf = 1%. El trabajo ex-perimental incluyó pruebas de flexión de cuatro puntos en vigas simplemente apoyadas. Posteriormente, se realizó un modelado numérico con el software de mé-todo de elementos finitos Abaqus para la calibración y validación de los resultados experimentales. Primero, se realizó un análisis de sensibilidad (malla y tiempo) para obtener la mejor correlación con los resultados experimentales. Luego, se utilizaron los resultados de las pruebas de las vigas para la calibración en la in-vestigación del modelado de elementos finitos (FEM). La comparación de los resultados mostró que hay una buena concordancia entre las pruebas experimentales y los resultados del análisis de elementos finitos no li-neales (NLFEA). En general, esta investigación demos-tró una mejora de.....
- Published
- 2024
3. Structural Behavior of Kenaf Fibre Reinforced Concrete Beams
- Author
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Azimi, Sayed Javid, Kaiwaan, Abdulhai, Azimi, Sayed Alem, Azimi, Sayed Javid, Kaiwaan, Abdulhai, and Azimi, Sayed Alem
- Abstract
This paper presents the effect of kenaf fibres in reinforced concrete beams. In investigating the structural behaviour of the beams, four point bending test was conducted on five beams by considering two distinct parameters (i) shear reinforcement arrangement (ii) the amount of kenaf fibres in the aforementioned beams. The beams consists of Two beams with full shear reinforcement by two amount of kenaf fibres, 10kg/m³ and 20kg/m³, respectively and two other beams with 50% increased shear spacing with two different amount of kenaf fibre 10 kg/m³ and 20 kg/m³ were examined. A control beam is made of 0 kg/m³ kenaf fibre with full shear reinforcement. The experimental results suggests that beams with the inclusion of kenaf fibres demonstrates significant increase on the load carrying capacity, ductility and shear strength. Moreover, it was observed that the mode of failure is altered from shear mode to bending mode. Furthermore, this study opines that kenaf fibres are compatible with RC which yields promising results., Este artículo presenta el efecto de las fibras de kenaf en vigas de hormigón armado. al investigar el compor-tamiento estructural de las vigas, se realizó una prue-ba de flexión de cuatro puntos en cinco vigas con-siderando dos parámetros distintos (i) la disposición del refuerzo de corte (ii) la cantidad de fibras de kenaf en las vigas antes mencionadas. Las vigas constan de dos vigas con refuerzo de corte total mediante dos cantidades de fibras de kenaf, 10 kg/m³ y 20 kg/m³, respectivamente, y otras dos vigas con un 50 % de mayor espaciado de corte con dos cantidades dife-rentes de fibras de kenaf de 10 kg/m³ y 20 kg. /m³ fueron examinados. Una viga de control está hecha de fibra de kenaf de 0 kg/m³ con refuerzo de corte total. Los resultados experimentales sugieren que las vigas con la inclusión de fibras de kenaf demuestran un aumento significativo en la capacidad de carga, ductilidad y resistencia al corte. además, se observó que el modo de falla cambia del modo de corte al modo de flexión. Además, este estudio opina que las fibras de kenaf son compatibles con RC, lo que arroja resultados prometedores.
- Published
- 2024
4. Structural Behavior of Hair Fiber Reinforced Concrete Beams
- Author
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Azimi, Sayed Javid, primary
- Published
- 2017
- Full Text
- View/download PDF
5. An experimental study on flexural strength enhancement of concrete by means of small steel fibers.
- Author
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Namdar, Abdoullah, Zakaria, Ideris Bin, Hazeli, Azimah Bt, Azimi, Sayed Javid, Razak, Abdul Syukor Bin Abd., and Gopalakrishna, G. S.
- Subjects
CONSTRUCTION costs ,CONSTRUCTION cost estimates ,METAL fibers ,CONCRETE ,FLEXURAL strength ,STEEL - Abstract
Cost effective improvement of the mechanical performances of structural materials is an important goal in construction industry. To improve the flexural strength of plain concrete so as to reduce construction costs, the addition of fibers to the concrete mixture can be adopted. The addition of small steel fibers with different lengths and proportion have experimentally been analyzed in terms of concrete flexural strength enhancement. The main objectives of the present study are related to the evaluation of the influence of steel fibers design on the increase of concrete flexural characteristics and on the mode of failure. Two types of beams have been investigated. The force level, deflection and time to failure of beams have been measured. The shear crack, flexural crack and intermediate shear-flexural crack have been studied. The steel fiber content controlled crack morphology. Flexural strength and time to failure of fiber reinforce concrete could be further enhanced if, instead of smooth steel fibers, corrugated fibers were used. [ABSTRACT FROM AUTHOR]
- Published
- 2013
- Full Text
- View/download PDF
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