Flexural performance of reinforced concrete beams strengthened with self-compacting concrete jacketing and steel welded wire mesh

Tayeh, Bassam A.; Maraq, Mohamed A. Abu; Ziara, Mohamed M.

doi:10.1016/j.istruc.2020.10.035

Cited by 30 publications

(5 citation statements)

References 24 publications

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“…It is also concrete which shows less resistance to flow, so it can be placed and compacted under its own weight without any vibration effort, even though it has sufficient viscosity to handle without segregation or bleeding 3–8 . SCC is extensively used around the world as it has opened up new fronts for the construction of various civil engineering structures 9,10 . SCC has been the most significant development in concrete technology in many ways recently 5 .…”

Section: Introductionmentioning

confidence: 99%

Properties and durability of self‐compacting concrete incorporated with nanosilica, fly ash, and limestone powder

Hakeem

Amin

Zeyad

et al. 2023

Structural Concrete

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This research focused on finding the effect of nanosilica (NS) on the properties of self‐compacting concrete (SCC). NS in various proportions of 1%, 2%, 3%, 4%, 5%, 6%, 8%, and 10% was added to SCC with 10% silica fume (SF) or 10% fly ash (FA) by weight of cement to improve the properties of SCC. While the limestone powder (LSP) was used at a fixed supplementation of 15% by cement weight for all mixes. Fifteen SCC mixtures were designed based on the European guidelines for self‐compacting concrete. The properties of fresh SCC were evaluated by several tests of the slump flow, slump T50, V‐funnel, V‐funnel T5min, L‐box J‐ring, and fill box. Meanwhile, several tests evaluated SCC's mechanical properties, including compressive strength, split tensile strength, flexural strength, bond strength, and modulus of elasticity. Moreover, the permeability properties of SCC were evaluated by water permeability and air‐content tests. The effect of applying high temperatures (100–800°C) on the compressive strength of SCC containing NS with cementitious materials (SF, FA, and LSP) was also evaluated. Results showed that adding 3% NS with 10% SF and 15% LSP by weight of cement can be used to achieve the best mechanical properties of SCC. The SFNS3 mixture achieved the highest mechanical properties of 75.1, 11.9, and 41,300 MPa for compressive strength, bond strength, and modulus of elasticity tests. While the results for the slump flow, slump T50cm, and fill box were 680 mm, 6 s, and 93%.

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Section: Introductionmentioning

confidence: 99%

Properties and durability of self‐compacting concrete incorporated with nanosilica, fly ash, and limestone powder

Hakeem

Amin

Zeyad

et al. 2023

Structural Concrete

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“…A composite strengthening system, along with external restraints, are commonly used to restore or improve the performance of concrete structures. Composite strengthening has traditionally been achieved by adding new structural members [8]- [11], section enlargement [12], external posttensioning [13], and externally bonded steel elements [14], All of which should be oriented to serve the structure's intended use for the structure's designed service life without compromising its functionality.…”

Section: Introductionmentioning

confidence: 99%

Column structure strengthening with FRP (Fiber Reinforced Polymer) due to story addition

I Wayan Maesa Andreasnata,

I Nengah Sinarta,

Ni Komang Armaeni

et al. 2022

JIPE

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This study focuses on strengthening scheme of an existing structure with added story. The addition of a new story increases gravitational loading, which affects the seismic and wind responses of the structure and, as a consequence, the loading combination. To ensure the structure’s capacity requirement, the strengthening scheme uses CFRP (Carbon Fiber Reinforced Polymer). In order to adequately define the structure's performance, a series of structural analyses were performed. The structure's state before and after story addition, subsequently the state after CFRP strengthening, were evaluated. It is demonstrated that the additional story to the structure causes an exceedance in internal forces; however, the strengthening with CFRP is sufficient to withstand these forces, proving that the strengthening scheme is effective and beneficial.

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“…Fibrous concrete has a low yield value to guarantee high workability and an appropriate viscosity to prevent bleeding and segregation [7], and it can retain its homogeneity during placement to ensure sufficient durability of the structural members. Numerous studies have demonstrated that introducing fibres into SCC enhances SCC's mechanical properties, including toughness, compressive strength, tensile or flexural strength and impact resistance [8][9][10][11][12][13][14]. This concrete is usually characterised by low permeability, which plays a crucial role in repairing concrete that has deteriorated due to environmental factors.…”

Section: Introductionmentioning

confidence: 99%

Effect of high temperature on the mechanical properties of basalt fibre self-compacting concrete as an overlay material

Haido

Tayeh

Majeed

et al. 2021

Construction and Building Materials

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The compressive strength of the basalt fibre SCC was diminished by 28% at 500°C. The splitting tensile strength of the SCC was increased by adding 0.25% of fibre. Considerable degradation in the flexural strength of fibrous SCC was seen at 300°C. Slant shear of hybrid concrete was highly affected by fibre content of overlay. Interfacial surface roughened by sand blast provided proper bond in hybrid sample.

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Flexural performance of reinforced concrete beams strengthened with self-compacting concrete jacketing and steel welded wire mesh

Cited by 30 publications

References 24 publications

Properties and durability of self‐compacting concrete incorporated with nanosilica, fly ash, and limestone powder

Properties and durability of self‐compacting concrete incorporated with nanosilica, fly ash, and limestone powder

Column structure strengthening with FRP (Fiber Reinforced Polymer) due to story addition

Effect of high temperature on the mechanical properties of basalt fibre self-compacting concrete as an overlay material

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