Central composite design application in the optimization of the effect of waste foundry sand on concrete properties using RSM

Ali, Mujahid; Khan, Muhammad Imran; Masood, Faisal; Alsulami, Badr T.; Bouallègue, Belgacem; Nawaz, Rab; Федюк, Роман

doi:10.1016/j.istruc.2022.11.013

Cited by 15 publications

(8 citation statements)

References 52 publications

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“…Structure stability and enhancement of strength properties are the main goals of engineers. However, researchers mostly considered green and sustainable construction while enhancing the strength properties; therefore, they try to limit the use of natural resources and widely used waste materials 1 . Recently, several innovations have been introduced in the construction industry globally in which concrete-related innovations took the lion’s share of the current period.…”

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

Self Cite

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“…The coefficient of determination (R²) ranged from 0.987 to 0.995, which corresponds to a high significance in the model. Thus, foundry sand is indicated to replace up to 20% of fine aggregate for conventional concrete and up to 30% for nonstructural concrete, contributing to sustainable development (Ali et al 2022); • RSM to analyze the influence on the fresh and hardened properties of cementitious pastes when ordinary cement is replaced by irradiated polyethylene terephthalate (PET) waste and silica fume. The ANOVA models showed an error of less than 5%, allowing a good relationship between theoretical and experimental results (Khan et al 2021); • The use of RSM and sensitivity analysis to improve the heat transfer process of lightweight concrete hollow bricks.…”

Section: Introductionmentioning

confidence: 99%

Optimization techniques for mortars with self-compacting characteristics through Central Composite Design

Oliveira Nina Rocha,

Maia

2023

UPjeng

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The demand for concrete production for civil construction promotes an investment by researchers and builders to find methodologies that improve their performance, the costs and less environmental degradation. Self-compacting concrete works it possible to offer a mixture with high flowability and compaction and good mechanical properties. For a better optimization of the mixtures, the statistical tool Design of Experiments (DoE) was used. Therefore, the objective of this research was to optimize an experimental dataset of high strength self-compacting mortars, through statistical analysis, using the Response Surface Methodology (RSM) for a Central Composite Design (CCD). The results showed a strong correlation between the D-Flow and T-funnel response factors, when compared with CS14h and CS28d models that showed moderate significance. The input variable w/c was the most significant model. Numerical optimization solutions showed good accuracy and high compliance for low cost and environmental impact, maintaining high performance in fresh and hardened properties.

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“…Design of experiments (DoE) is a statistical tool that has been used in the optimization of materials, and its advantages include correlating the investigated variables, finding an optimal response within an investigation region, reducing the number of required experimental trials, and even defining optimized models according to predefined parameters [13,14]. The response surface methodology (RSM) can be used to find relationships between input and output variables and to define the optimization criteria among variables [15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

“…In recent decades, investigations using statistical tools in concrete and mortar mix design have been intensified. Research has applied the RSM to maximize the replacement of cement or aggregates with-among others-pumice stone [1], foundry sand [18], plastic waste and silica fume [19], and hybrid steel fibers [20]. The authors developed highsignificance models, thereby making it possible to optimize the performance of cementitious mixtures while reducing the use of prime raw materials.…”

Section: Introductionmentioning

confidence: 99%

Exploring Design Optimization of Self-Compacting Mortars with Response Surface Methodology

Rocha,

Ascensão,

Maia

2023

Applied Sciences

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The ever-evolving construction sector demands technological developments to provide consumers with products that meet stringent technical, environmental, and economic requirements. Self-compacting cementitious mixtures have garnered significance in the construction market due to their enhanced compaction, workability, fluidity, and mechanical properties. This study aimed to harness the potential of statistical response surface methodology (RSM) to optimize the fresh properties and strength development of self-compacting mortars. A self-compacting mortar repository was used to build meaningful and robust models describing D-Flow and T-Funnel results, as well as the compressive strength development after 24 h (CS24h) and 28 days (CS28d) of curing. The quantitative input factors considered were A (water/cement), B (superplasticizer/powder), C (water/powder), and D (sand/mortar), and the output variables were Y1 (D-Flow), Y2 (T-Funnel), Y3 (CS24h), and Y4 (CS28d). The results found adjusted response models, with significant R2 values of 87.4% for the D-Flow, 93.3% for the T-Funnel, and 79.1% for the CS24h. However, for the CS28d model, a low R2 of 39.9% was found. Variable A had the greatest influence on the response models. The best correlations found were between inputs A and C and outputs Y1 and Y2, as well as input factors A and D for responses Y3 and Y4. The resulting model was enhanced, thereby resulting in a global desirability of approximately 60%, which showcases the potential for the further refinement and optimization of RSM models applied to self-compacting mortars.

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Central composite design application in the optimization of the effect of waste foundry sand on concrete properties using RSM

Cited by 15 publications

References 52 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

Optimization techniques for mortars with self-compacting characteristics through Central Composite Design

Exploring Design Optimization of Self-Compacting Mortars with Response Surface Methodology

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