Prediction Models for Estimating Compressive Strength of Concrete Made of Manufactured Sand Using Gene Expression Programming Model

Khan, Kaffayatullah; Salami, Babatunde Abiodun; Jamal, Arshad; Amin, Muhammad; Usman, Muhammad; Al-Faiad, Majdi Adel; Abu-Arab, Abdullah M.; Iqbal, Mudassir

doi:10.3390/ma15175823

Cited by 9 publications

(5 citation statements)

References 65 publications

(73 reference statements)

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“…Figure 3 shows the average mortar properties of CS7, CS28, and WA with their coefficient of variation (Cv). In Figure 3a,b, the compressive strength exhibits a comparable qualitative trend with varying BSS [46,47]. At the same age, CS decreases with the increase in cement substitution and the resulting increase in water-to-cement ratio (W/C) [48].…”

Section: Resultsmentioning

confidence: 80%

Physical and Mechanical Effects of Silica Sand in Cement Mortars: Experimental and Statistical Modeling

Douadi,

Hebbache,

Boutlikht

et al. 2023

Materials

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The environmental impacts of cement manufacturing are becoming a real-time issue that requires attention. This paper investigates the mechanical and physical properties of mortars with finely ground sand as a substitute for cement. The experimental program consisted of three silica sands with a Blaine Specific Surface (BSS) area of 459 m2/kg, 497 m2/kg, and 543 m2/kg and four substitution ratios of 10%, 20%, 30%, and 40%. A total of 12 mixtures have been prepared and tested for comparison to the reference mortar. The pozzolanic effect of the sand was evaluated using thermogravimetric analysis (TGA). The results revealed that the fineness variation from 459 m2/kg to 543 m2/kg resulted in an increase of 20% and 30% in water absorption and compressive strength, respectively. However, increasing the substitution ratio from 10% to 40% led to a 40% decrease in mechanical strength and a 25% increase in water absorption. The statistical analysis of the results demonstrated that both factors under study influenced compressive strength and water absorption. The ANalysis of VAriance (ANOVA) confirmed that the proposed regression equations predict the experimental results. Further studies will investigate both the technical and environmental performances of cement mortars with finely ground silica sand.

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Section: Resultsmentioning

confidence: 80%

Physical and Mechanical Effects of Silica Sand in Cement Mortars: Experimental and Statistical Modeling

Douadi,

Hebbache,

Boutlikht

et al. 2023

Materials

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“…For concrete with high early strength requirements, the stone powder content of machine-made sand should be controlled not to be too much. Khan K et al [6] investigates the compressive strength of concrete made of manufactured sand as a partial replacement of normal sand. The prediction model, i.e., gene expression programming (GEP), was used to estimate the compressive strength of manufactured sand concrete (MSC).…”

Section: Introductionmentioning

confidence: 99%

A Support Vector Regression-Based Method for Stone Powder Detection in Machine-Made Sand

Shi,

Wang,

Pei

et al. 2024

Advances in Transdisciplinary Engineering

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Aiming at the problems of cumbersome steps, low accuracy and difficult to quantify in the detection method of stone powder content of machine-made sand, a quantitative stone powder detection method is proposed. Based on the image segmentation results, the stone powder attached to the sand surface and the scattered stone powder were calculated separately. Then, a support vector regression (SVM) model was used to obtain the mapping relationship between the two and the methylene blue value to quantify the total stone powder content of machine-made sand. The experimental results show that the obtained value of 0.9239 proves that there is a high correlation between the method and the methylene blue value, thus verifying the effectiveness of the method in quantifying stone powder. The stone powder detection method for machine-made sand proposed in this paper further realises the quantitative function of qualitative analysis, provides a new technical method for the quality detection process of machine-made sand, and also has important practical significance in the direction of the construction of the smart city.

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“…At the same time, many such wastes from agricultural processes have strength characteristics (SC) comparable to the characteristics of the mineral components of concrete, which makes them potentially one of the main candidates for partial replacement of aggregates traditionally used for concrete [ 8 ]. Moreover, the structural features of organic materials could make it possible to obtain lighter concrete with improved sound- and heat-protection characteristics [ 9 ]. Natural coarse aggregates were replaced with recycled concrete aggregates as one solution for reducing the depletion of natural resources in various concrete applications [ 10 , 11 ].…”

Section: Introductionmentioning

confidence: 99%

Effect of Walnut-Shell Additive on the Structure and Characteristics of Concrete

et al. 2023

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The partial replacement of the mineral components of concrete with natural renewable analogues in full possession of the performance characteristics of the final material, allows not only the concrete-production process to be made more environmentally friendly and inexpensive, but also to solve an important task for the agricultural industry, which is that associated with waste disposal. The scientific novelty of the work is in the obtaining of new concrete compositions by the partial replacement of coarse aggregate with a natural analogue in the form of a walnut shell, which has the maximum ratio of the strength of the composite to its density, as well as in identifying new dependencies of strength and density and their ratio on the amount of replacement of mineral coarse-aggregate walnut shell. The main goal of this article was to analyze the effect of composition factors on characteristics of concrete with partial replacement of large aggregates with walnut shells and to search for the optimal compound that would make it possible to obtain concrete with a minimum decrease in strength characteristics with a maximum decrease in concrete density. Cubes and prism laboratory samples were made from concrete of normal density with the replacement of coarse aggregate by 5, 10, 15, 20, 25 and 30%, by volume. The main mechanical properties, such as density, strength (compressive, tensile, tensile strength in bending) of the concrete samples were studied. The investigation used standard methods and scanning electron microscopy. An increase into strength characteristics up to 3.5%, as well as the maximum ratio of strength to density of concrete, was observed at a walnut-shell dosage of 5%. Effective partial replacement of coarse aggregate with walnut shells leads to a reduction in the consumption of crushed stone by up to 10% and a decrease in the mass of concrete by up to 6%.

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Prediction Models for Estimating Compressive Strength of Concrete Made of Manufactured Sand Using Gene Expression Programming Model

Cited by 9 publications

References 65 publications

Physical and Mechanical Effects of Silica Sand in Cement Mortars: Experimental and Statistical Modeling

Physical and Mechanical Effects of Silica Sand in Cement Mortars: Experimental and Statistical Modeling

A Support Vector Regression-Based Method for Stone Powder Detection in Machine-Made Sand

Effect of Walnut-Shell Additive on the Structure and Characteristics of Concrete

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