Flexural Behavior of Reinforced Concrete Beams with Geogrid - Experimental Study | ||||
| Engineering Research Journal (Shoubra) | ||||
| Volume 51, Issue 3, July 2022, Page 105-119 PDF (1.08 MB) | ||||
| Document Type: Research articles | ||||
| DOI: 10.21608/erjsh.2022.250003 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| Mona K. N. Ghali1; Mohamed Said1; Sherif El-Beshlawy2; Reham Mahmoud* 3 | ||||
| 1Professor of Reinforced Concrete Structures, Civil Eng. Dep., Shoubra Faculty of Eng/ Benha University, Egypt | ||||
| 2Lecturer, Construction Engineering Department, The Higher Institute of Eng/ 6th of October City, Egypt | ||||
| 3Construction Engineering Department, The Higher Institute of Eng/ 6th of October City, Egypt | ||||
| Abstract | ||||
| Geogrids are categorized as one of the geosynthetics materials that are used for soil stabilization and reinforcing of earth structures such as earth walls and dams. This research investigated the effect of using uniaxial geogrids as additional reinforcement, in addition to, steel fibers in the concrete mix, on the flexural behavior of beams. The experimental research work comprised of testing thirteen simply supported reinforced concrete (R.C) beams which were tested up to failure under four-point loading. The variables of this study are: the volume of steel fibers (0.0, 0.5, 1.0 %), number of geogrid layers (one, two, and three layers), the shape of the geogrid layers, and the longitudinal reinforcement percentage. The mid-span deflection, failure loads, ductility, crack patterns, steel, concrete and Geogrid strains of the beams were reported and compared. The test results concluded that the addition of Geogrid layers as a reinforcing technique proved to be an effective tool to improve the flexural behavior of R.C beams and improve the cracking patterns. The number of geogrid layers used in the beams plays a significant effect in increasing the failure loads and decreasing the deflections of the beams. The addition of steel fibers in R.C beams, in addition to, Geogrid layers increases the cracking loads, failure loads and reduces the deflection of beams at failure loads. Increasing the fiber content from (0.5%) to (1%) had a slight effect on increasing the maximum carrying capacities of the beams. Addition of U-shaped Geogrid layers had a considerable effect on increasing the failure loads rather than the addition of Geogrid layers in the tension zone only | ||||
| Keywords | ||||
| Beams, Flexural behavior; Geogrids and Steel fibers | ||||
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