Investigating the mechanical strength, durability and micro-structural properties of slag-based concrete

Deepak, M.; Ramalinga Reddy, Y.; Nagendra, R.

doi:10.1007/s41062-023-01234-2

Cited by 3 publications

(1 citation statement)

References 21 publications

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“…In recent years, research has attempted to revalue LFS as a suitable raw material for the manufacturing of mortars [46][47][48][49] and, specifically, concrete [30,50,51]. Its addition, after proper stabilization, has proven that it has the ability to partially replace the fine aggregate, while preserving mechanical properties [31,52].…”

Section: Introductionmentioning

confidence: 99%

Analyzing the Relationship between Compressive Strength and Modulus of Elasticity in Concrete with Ladle Furnace Slag

Revilla-Cuesta,

Serrano-López,

Espinosa

et al. 2023

Buildings

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The addition of Ladle Furnace Slag (LFS) to concrete modifies its compressive strength and modulus of elasticity and consequently impacts their relationship. This research evaluated both properties at 28, 90, and 180 days in concrete mixes produced with 5%, 10%, and 20% of two LFS types, both stabilized and non-stabilized. The relationship between them was then analyzed through these experimental results by adopting a statistical approach. A three-way analysis of variance revealed that both properties were affected by LFS differently. Thus, the effect of each LFS content on both features varied depending on its composition and pre-treatment. Furthermore, the effect of the LFS content on the compressive strength was also influenced by the age of the concrete. These facets implied that when analyzing the relationship between both mechanical properties, the monotonic correlations were stronger than the linear ones, reaching values between 0.90 and 1.00. Therefore, the double reciprocal regression models were the most precise ones for expressing the modulus of elasticity as a function of compressive strength. The model accuracy was further enhanced when discriminating based on the LFS type and introducing concrete age as a predictive variable. With all these considerations, the average deviations between the estimated and experimental values of 1–3% and the maximum deviations of 4–7% were reached, as well as R2 coefficients of up to 97%. These aspects are central to the further development of LFS concrete models.

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Section: Introductionmentioning

confidence: 99%

Analyzing the Relationship between Compressive Strength and Modulus of Elasticity in Concrete with Ladle Furnace Slag

Revilla-Cuesta,

Serrano-López,

Espinosa

et al. 2023

Buildings

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Assessment of Mechanical Properties of Concrete with Substitution of River Sand by Robo Sand and Incorporation of Glass Powder

Mounika,

Nikhil,

Rasagna

et al. 2024

E3S Web of Conf.

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The scarcity of natural resources and the environmental impact of traditional construction materials have led to the exploration of alternative materials in the construction industry. Robo Sand (RB), derived from crushed rocks, and Glass Powder (GP), a byproduct of the glass manufacturing process, are two such alternatives that have gained attention due to their potential to mitigate environmental concerns and improve material properties. This study investigates the mechanical properties of concrete by substituting river sand partially with RB and incorporating varying percentages of GP. The research focuses on a fixed 40% substitution rate of RB while varying the replacement level of river sand with glass powder from 0% to 25% at a constant water/cement ratio of 0.45. The mechanical properties assessed include compressive strength, tensile strength, flexural strength, and workability characteristics at the age of 7 and 28 days. The M25 grade of concrete mixtures are meticulously designed and tested to evaluate the impact of GP content on the performance of the concrete matrix. The experimental results show a highest compressive strength of 47.48 MPa and split tensile strength of 2.85 MPa at 15% dosage of GP, and a highest flexural strength of 11.08 MPa at 20% substitution of GP at 28 days. UPVT results indicate that the quality of concrete is enhanced with the improved substitution of GP.

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Optimisation of composition and strength properties of slag-alkali binders based on fuel slags

Abdykalykov,

Bolotov,

Kurbanbaev

et al. 2024

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The study addresses ways to improve the composition and strength of slag-alkali binders derived from fuel combustion products. For this purpose, X-ray diffraction analysis, spectroscopy, microscopy, compression strength tests, and data analysis were used to activate the ash from the power plant units, evaluate the activity of the compositions, heat and moisture treatment, and determine the optimal compositions. Alumina binders have advantages over Portland cement: they are highly durable, waterproof, frost-resistant and corrosion-resistant. These materials are used in the construction of special-purpose facilities, such as motorways, airfields, bridges, transport tunnels and hydraulic structures. As part of an experimental study, optimal ash binders based on fuel slag with the required properties were developed. Analysis of the chemical composition of fuel slags revealed a high content of silicon, aluminium, iron, calcium and magnesium oxides, which makes them suitable for use as binders. Experimental data has shown that the introduction of additives such as gypsum significantly improves the mechanical properties and durability of materials. The developed technological processes of mixing, moulding and curing ensure stable product quality. Tests of the samples demonstrated high compressive, tensile and flexural strengths, confirming their suitability for construction applications. The environmental assessment showed that the use of fuel slag reduces the carbon footprint and reduces the negative impact on the environment. As a result, a scalable production process has been developed that can be implemented in industry to create environmentally sustainable and highly efficient building materials. This study presents new data on the development of environmentally sustainable building materials based on fuel slag, which can reduce environmental impact and improve the sustainability of infrastructure

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Investigating the mechanical strength, durability and micro-structural properties of slag-based concrete

Cited by 3 publications

References 21 publications

Analyzing the Relationship between Compressive Strength and Modulus of Elasticity in Concrete with Ladle Furnace Slag

Analyzing the Relationship between Compressive Strength and Modulus of Elasticity in Concrete with Ladle Furnace Slag

Assessment of Mechanical Properties of Concrete with Substitution of River Sand by Robo Sand and Incorporation of Glass Powder

Optimisation of composition and strength properties of slag-alkali binders based on fuel slags

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