Experimental and analytical investigation on the confinement behavior of low strength concrete under axial compression

Ali, Mujahid; Abbas, Sheraz; Azevedo, Afonso Rangel Garcez de; Marvila, Markssuel Teixeira; Khan, Muhammad Imran; Rafiq, Waqas

doi:10.1016/j.istruc.2021.12.038

Cited by 11 publications

(4 citation statements)

References 40 publications

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“…Recently, researchers studied the confinement methods at different angles and spacing to enhance the strength properties of concrete 33 . For instance, Ali et al 34 , studies the confinement behaviour low strength concrete under axial compression using experimental and analytical approaches.…”

Section: Introductionmentioning

confidence: 99%

Comparative study of eco-friendly wire mesh configurations to enhance sustainability in reinforced concrete structures

Mebrahtom,

Fissha,

Ali

et al. 2024

Sci Rep

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Recent and past studies mainly focus on reducing the dead weight of structure; therefore, they considered lightweight aggregate concrete (LWAC) which reduces the dead weight but also affects the strength parameters. Therefore, the current study aims to use varied steel wire meshes to investigate the effects of LWAC on mechanical properties. Three types of steel wire mesh are used such as hexagonal (chicken), welded square, and expanded metal mesh, in various layers and orientations in LWAC. Numerous mechanical characteristics were examined, including energy absorption (EA), compressive strength (CS), and flexural strength (FS). A total of ninety prisms and thirty-three cubes were made. For the FS test, forty-five 100 × 100 × 500 mm prism samples were poured, thirty-three 150 × 150 × 150 mm cube samples were made, and forty-five 400 × 300 × 75 mm EA specimens were costed for fourteen days of curing. The experimental findings demonstrate that the FS was enhanced by adding additional forces that spread the forces over the section. One layer of chicken, welded, and expanded metal mesh enhances the FS by 52.96%, 23.76%, and 22.2%, respectively. In comparison to the remaining layers, the FS in a single-layer hexagonal wire mesh has the maximum strength, 29.49 MPa. The hexagonal wire mesh with a single layer had the greatest CS, measuring 36.56 MPa. When all three types of meshes are combined, the CS does not vary in this way and is estimated to be 29.79 MPa. In the combination of three layers, the chicken and expanded wire mesh had the most energy recorded prior to final failure, which was 1425.6 and 1108.7 J, whereas it was found the highest 752.3 J for welded square wire mesh. The energy absorption for the first layer with hexagonal wire mesh increased by 82.81% prior to the crack and by 88.34% prior to the ultimate failure. Overall, it was determined and suggested that hexagonal wire mesh works better than expanded and welded wire meshes.

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Section: Introductionmentioning

confidence: 99%

Comparative study of eco-friendly wire mesh configurations to enhance sustainability in reinforced concrete structures

Mebrahtom,

Fissha,

Ali

et al. 2024

Sci Rep

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“…Concrete is only second to water as the most widely used materials in the world, which was estimated at 30 billion tons per yearly consumption [1]. e demand for high-strength concrete in building infrastructures has been on the increase, but increasing the strength of concrete could equally increase its brittleness, which ultimately may lead to crack and failure of concrete structures [2][3][4][5][6]. However, the development of new cementitious materials could improve the safety, durability, and sustainability of concrete [7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Comparative Study on Mechanical Properties of Concrete Blended with Costus englerianus Bagasse Ash and Bagasse Fibre as Partial Replacement for Lime and Cement

Bheel

Kennedy

Awoyera

et al. 2022

Advances in Civil Engineering

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Nowadays, researchers have been on the lookout for eco-sustainable additives such as agro/industrial waste in concrete in order to offset the carbon footprint created by cement manufacturing. However, it has been said that the use of agro/industrial-waste-based cementitious materials in concrete improves its quality. However, this study compared the performance of hydrated lime and cement concrete replaced with 5% and 10% Costus englerianus bagasse ash and bagasse fibre for determining the mechanical properties (compressive and flexural strength). Moreover, compressive strength was evaluated on cubical specimens and flexural strength was evaluated on beam samples at 7, 14, and 28 days, respectively. Results showed that the compressive strength and flexural strength of the concretes increased with an increase in the curing age. Also, the compressive and flexural strengths of cement concrete were recorded by 65.38 MPa and 10.86 MPa at 0% bagasse ash or fibre, which performed better than concrete replaced with 5% and 10% bagasse ash and fibre at 28 days, respectively. Besides, the compressive strength of concrete was noted by 53.85 MPa and 48.92 MPa at 10% bagasse ash and 10% bagasse fibre, respectively, while the flexural strength was calculated by 6.86 MPa and 5.54 MPa at 10% bagasse ash and 10% bagasse fibre, respectively, which were higher than that of concrete produced with hydrated lime alone at 28 days. Thus, bagasse ash performed better than bagasse fibre ash as a partial replacement of cement or hydrated lime in concrete production. Therefore, Costus englerianus bagasse ash or bagasse fibre improved the performance of hydrated lime concrete at 5–10% replacement, but higher concrete strength would be obtained in cement replacement than hydrated lime.

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“…It exhibits brittleness and low durability [ 3 , 4 ]. Clay shale is prone to weathering, which results in fast degradation of its geotechnical characteristics, strength, and durability [ 5 , 6 , 7 , 8 ]. Some of the difficulties resulting from expansive shale’s behavior are: destabilizing fill material, a reduction in the bearing capacity of shallow, deep foundations, slope stability, plumbing, and subsidence [ 9 , 10 , 11 , 12 , 13 , 14 ].…”

Section: Introductionmentioning

confidence: 99%

Compaction Characteristics and Permeability of Expansive Shale Stabilized with Locally Produced Waste Materials

et al. 2022

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Waste is available in an abundant form and goes to landfill without any use, creating threats to the environment. Recent and past studies have used different types of waste to stabilize soil and reduce environmental impacts. However, there is a lack of studies on the combined use of marble dust, rice-husk ash, and saw dust in expansive shale soil. The current study tries to overcome such a gap in the literature, studying the effect of marble dust, rice-husk ash, and saw dust on expansive shale’s compaction characteristics and permeability properties. According to unified soil classification and the AAHTO classification system, the geotechnical properties of natural soil are classified as clay of high plasticity (CH) and A-7-5. Several tests are performed in the laboratory to investigate the compaction characteristics and permeability properties of expansive shale. Moreover, permeability apparatus is used to investigate the permeability properties of soil. In addition, due to the accuracy of the apparatus, the conventional apparatus has been partly modified. The experimental results show that the addition of waste to the soil has significantly improved soil stabilization, increasing permeability and decreasing plasticity indexes. In addition, there is a gradual decrease in the dry density of soil and an increase in the permeability of stabilized soil. Based on the outcomes of the current study, it claims and concludes that these waste materials can be used as soil stabilizers or modifiers, instead of being dumped in landfill, which will provide a green, friendly, and sustainable environment. The current study recommends that future researchers use various wastes in the concrete and soil to improve their compaction and mechanical properties.

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Experimental and analytical investigation on the confinement behavior of low strength concrete under axial compression

Cited by 11 publications

References 40 publications

Comparative study of eco-friendly wire mesh configurations to enhance sustainability in reinforced concrete structures

Comparative study of eco-friendly wire mesh configurations to enhance sustainability in reinforced concrete structures

Comparative Study on Mechanical Properties of Concrete Blended with Costus englerianus Bagasse Ash and Bagasse Fibre as Partial Replacement for Lime and Cement

Compaction Characteristics and Permeability of Expansive Shale Stabilized with Locally Produced Waste Materials

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