The confining effect of geo-grid on the mechanical properties of concrete specimens with steel fiber under compression and flexure

Chidambaram, R. Siva; Agarwal, Pankaj

doi:10.1016/j.conbuildmat.2014.08.059

Cited by 46 publications

(21 citation statements)

References 10 publications

(6 reference statements)

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“…R. Siva Chidambaram and Pankaj Agarwal 2014; their study investigated the feasibility of geogrids as a confinement reinforcement in steel fiber cement concrete. In this research, concrete specimens were prepared and tested under axial compression, split tension, and flexural loading [25]. Aluri Anil Kumar and Y. Anand Babu 2017; through their study, a new reinforced system was introduced to be used in concrete columns.…”

Section: Literature Reviewmentioning

confidence: 99%

Flexural Behavior of Reinforced Concrete Slabs Reinforced with Innovative Hybrid Reinforcement of Geogrids and Steel Bars

2020

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This paper aims to innovate a hybrid reinforcement system for concrete slabs, consisting of geogrids and steel bars, by conducting an experimental comparative study between using different types, tensile strengths, and layers of geogrids as additional reinforcement to steel bars in comparison to conventional steel-reinforced concrete control slab. These concrete slabs were tested under a four-point loading system until they failed due to bending. As an addition, strain gauges were attached to the concrete slabs bottom reinforcement (geogrids and steel bars) to provide a close examination of geogrids and steel bars as a hybrid reinforcement system. Results show that the innovated hybrid reinforcement system of uniaxial geogrids and steel bars more preferred as concrete slabs reinforcement as it provided more benefits values (including, but not limited to, initial-peak load, steel-yield load, post-peak load, displacement ductility index, and energy absorption capacity) and more efficient utilization (including, but not limited to, higher benefits to cost values and better flexural performance) than the case of using conventional reinforcement of steel bars and the cases of using triaxial geogrids as additional reinforcement to the steel bars; however, triaxial geogrids provide lower deflection values and higher first-crack load values.

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Section: Literature Reviewmentioning

confidence: 99%

Flexural Behavior of Reinforced Concrete Slabs Reinforced with Innovative Hybrid Reinforcement of Geogrids and Steel Bars

2020

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“…Lately, the use of geogrids as reinforcements has extended towards pavement networks, especially as stabilizing material in unbound surfaces, reinforcing elements in asphalt layers, and also as interlayers in overlay applications. It has become broadly used for applying geogrids as interlayers to reduce the reflective cracking in pavement overlays in the joined plain concrete pavements [4,[6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

“…Chidambaram and Agarwal (2014) [7] under compressive, flexural and tensile loading attempted to stabilize concrete specimens with geogrids. It was concluded that the use of geogrids in concrete samples resulted in a significant improvement compared to ordinary reinforcements in the concrete behavior.…”

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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“…These advantages include a high tensile strength and excellent chemical resistance. Also, the geogrid can provide further shear strength at the interface between the geogrid and the surrounding materials (Meski & Chehab, 2014;Siva & Agarwal, 2014, 2015a, 2015bWang et al 2015;and Abdesssemed et al 2015). Agarwal (2014, 2015a) investigated the behaviour of prismatic and cylindrical specimens confined with one or two geogrid layers.…”

Section: Introductionmentioning

confidence: 99%

Effect of geogrid reinforcement on the flexural behaviour of concrete pavements

Al-Hedad

Hadi

2018

Road Materials and Pavement Design

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This paper presents results of an investigation of the effect of geogrid reinforcement on the flexural behaviour of concrete pavements. Six concrete slab specimens having dimensions of 900 x 900 x 60mm were prepared and tested. Three of the specimens were unreinforced and taken as references. The other three were reinforced with a triaxial geogrid layer located at 40mm from the top of the specimen. To support the specimens during the testing, two layers of recycled rubber having a side dimension of 900mm and a 60mm total thickness were used. According to the location of the applied load, the specimens were divided into three groups. Each group included two specimens (unreinforced and reinforced specimen). The specimens of the first group were tested by applying a load at the corner of the specimen. For the second group, the specimens were tested by applying a load at the edge of the specimen. The load was applied at the interior of the specimens for the third group. The monotonic test load was applied at a rate of 0.25 mm/min. Study parameters investigated in this study included the ductility, fracture energy and formation of cracks of the specimens. Test results obtained indicate that the flexural performance and cracking resistance of the concrete slab specimens reinforced with the geogrid can be improved.

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The confining effect of geo-grid on the mechanical properties of concrete specimens with steel fiber under compression and flexure

Cited by 46 publications

References 10 publications

Flexural Behavior of Reinforced Concrete Slabs Reinforced with Innovative Hybrid Reinforcement of Geogrids and Steel Bars

Flexural Behavior of Reinforced Concrete Slabs Reinforced with Innovative Hybrid Reinforcement of Geogrids and Steel Bars

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

Effect of geogrid reinforcement on the flexural behaviour of concrete pavements

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