Enhancing the Punching Load Capacity of Reinforced Concrete Slabs Using an External Epoxy-Steel Wire Mesh Composite

Jaafer, Abdulkhaliq A.; AlShadidi, Raid Mohammed Hussain; Kareem, Saba L.

doi:10.3390/fib7080068

Cited by 6 publications

(3 citation statements)

References 41 publications

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“…Finally, geogrids have been used as reinforcements in networks of pavements, especially for material stabilization in unbound surfaces, and element reinforcement in layers of the asphalt [6][7][8][9][10][11]. Many researches have examined the behavior of strengthened or reinforced concrete elements with FRP like glass and carbon fibers [12][13][14][15]. To evaluate the effectiveness of geogrids in preventing cracking, Itani, et al (2016) [16] used uniaxial geogrid thin concrete overlays.…”

Section: Introductionmentioning

confidence: 99%

Flexural Behavior of Reinforced Concrete Beams with Geogrid - Experimental Study

Ghali

Said

El-Beshlawy

et al. 2022

Engineering Research Journal - Faculty of Engineering (Shoubra)

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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.

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Section: Introductionmentioning

confidence: 99%

Flexural Behavior of Reinforced Concrete Beams with Geogrid - Experimental Study

Ghali

Said

El-Beshlawy

et al. 2022

Engineering Research Journal - Faculty of Engineering (Shoubra)

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“…These studies showed that the combination of epoxy with steel mesh can also be used as an effective material for rapid strengthening. Jaafer et al in 2019 [45] employed a wire mesh-epoxy composite (WMEC) to strengthen concrete slabs. Al Nuaimi et al in 2020 [46] studied the durability of using a wire mesh-epoxy system as a strengthening material for RC members.…”

Section: Introductionmentioning

confidence: 99%

Shear Strengthening of Reinforced Concrete Beam Using Wire Mesh–Epoxy Composite

et al. 2022

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This experimental research aims to study the use of wire mesh–epoxy composite (WMEC) as a shear-strengthening technique for reinforced concrete (RC) beams by focusing on the following parameters: (1) presence of shear reinforcement in the shear span; (2) type of strengthening technique (U-jacketing, vertical U strip, or inclined strip); and (3) number of wire mesh layers (three or six layers). Nine simply supported rectangular RC beams were tested under two monotonic point loads. The testing specimens were divided into two groups: (1) five beams without shear reinforcement and (2) four beams with shear reinforcement. Load–deflection relationship, shear ductility index, beams’ stiffness, energy absorption, crack propagation, mode of failure, and strain were studied for all testing specimens and compared with those of the control beams to measure the improvement from WMEC addition. Results showed that all WMEC types enhanced the shear capacity. Among the three shear-strengthening types, the continuous U-jacket scheme had a higher effect, increasing the shear capacity between 33.4 and 95.9% and the shear ductility index by 23% relative to those of the reference specimens. The shear capacity improvement by WMEC for the beams without shear steel reinforcement was greater than that for the beams with shear reinforcement under the same shear-strengthening configuration. When the number of wire mesh layers was doubled, the ultimate load was further increased from 33.4 to 57.8%. This research showed that WMEC is a practical and excellent shear-strengthening technique for RC beams. Doi: 10.28991/CEJ-2022-08-06-09 Full Text: PDF

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“…Using geogrid leads to an increase in concrete ductility and improves its ductile behavior in the same manner of using the different fiber-reinforced polymers (FRP) materials. Many researchers introduced the behavior of concrete elements reinforced or strengthened with many types of FRPs like carbon and glass fibers as wraps and sheets [12][13][14][15]. Itani, et al (2016) [16] used uniaxial geogrid thin concrete overlays to test their effectiveness in preventing cracking.…”

Section: Introductionmentioning

confidence: 99%

Flexural Behavior of High Strength Self-Compacted Concrete Slabs Containing Treated and Untreated Geogrid Reinforcement

Fares

Hassan

Arab

2020

Fibers

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Geogrid is as one of the component materials classified under the geosynthetics used for soil stabilizing and reinforcement. Due to its higher strength-to-weight ratio, ease of handling, and comparatively low costs, geogrid has been gradually explored for possible use in concrete reinforcement. This research aims to assess the feasibility of using geogrids as a possible reinforcement for high-strength self-compacted concrete slabs to provide additional tensile strength and ductility. To enhance the bond between geogrid layers and the cement matrix, two types of geogrid surface modification methods are introduced. Gluing sand to the geogrid surface as a physical surface modification method and immersion in polycarboxylate as a chemical surface modification method are investigated. The effect of geogrid type (uniaxial, biaxial and triaxial) and the number of layers is also introduced. The test results show that the chemical treatment increased the ultimate flexural loading capacity of the tested slab by about 8.5% for one geogrid layer and 13% for two geogrid layers compared to untreated specimens. This work was extended to add two geogrid layers in addition to the slab’s steel reinforcement. The results show that adding geogrid decreased the ultimate flexural loading capacity but significantly increased the slab ductility.

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Enhancing the Punching Load Capacity of Reinforced Concrete Slabs Using an External Epoxy-Steel Wire Mesh Composite

Cited by 6 publications

References 41 publications

Flexural Behavior of Reinforced Concrete Beams with Geogrid - Experimental Study

Flexural Behavior of Reinforced Concrete Beams with Geogrid - Experimental Study

Shear Strengthening of Reinforced Concrete Beam Using Wire Mesh–Epoxy Composite

Flexural Behavior of High Strength Self-Compacted Concrete Slabs Containing Treated and Untreated Geogrid Reinforcement

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