PCA effect on structure of fly ashes and slag obtained by mechanosynthesis. Applications: Mechanical performance of substituted paste CEMI + 50% slag /or fly ashes

Bouchenafa, Othmane; Hamzaoui, Rabah; Bennabi, Abdelkrim; Colin, Johan

doi:10.1016/j.conbuildmat.2019.01.063

Cited by 18 publications

(2 citation statements)

References 40 publications

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“…Although the comparison of the XRD patterns of PHS with different fineness has not been found in the existing literature, the weakened diffuse hump peak between 25°-35° was widely reported for other powder materials such as the mechanically ground fly ash 40,41 and granulated blast furnace slag (GBFS) 42 , which were also primarily composted of vitreous phases. Othmane et al 40 and Sanjay and Rakesh 41 have attributed the decrease in hump intensity of fly ash after an intense mechanical grinding to the the amorphization phenomenon. Ahmed et al 42 have observed a weak and diffuse hump peak of GBFS after a long milling time, which was also due to the amorphization phenomenon during grinding.…”

Section: Resultsmentioning

confidence: 99%

Effects of Fineness and Content of Phosphorus Slag on Cement Hydration, Permeability, Pore Structure and Fractal Dimension of Concrete

et al. 2021

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The utilization of phosphorus slag (PHS) to replace the fly ash in the construction of hydraulic projects has attracted a growing attention in China. In this study, the influence of PHS fineness and content on cement hydration, mechanical strength, permeability as well as the pore structure and fractal dimension (Ds) of concrete have been discussed. The results indicate that the PHS addition retards the cement hydration and hence decreases the hydration heat within 3 days. The incorporation of PHS with a Blaine specific surface area of 505 m 2 /kg (PHS) could participate in the early pozzolanic reaction and consequently offsets the retarding effect to some extent. The incorporation of 20-40 w% PHS declines the early strength of concrete, but this reduction effect on strength can be eliminated to some degrees by mechanically grinding the PHS. The compressive strengths of concrete added with PHS with a high fineness of 505 m 2 /kg

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Section: Resultsmentioning

confidence: 99%

Effects of Fineness and Content of Phosphorus Slag on Cement Hydration, Permeability, Pore Structure and Fractal Dimension of Concrete

et al. 2021

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“…Steel slag production is rising yearly due to the growth of the steel industry. Along with taking up a lot of land area, it also emits pollutants into the atmosphere, pollutes water bodies, and produces hazardous waste [20]. The removal of steel slag waste is costing the steel industry more and more money.…”

Section: Introductionmentioning

confidence: 99%

Properties of Self-Compacting Concrete (SCC) Prepared with Binary and Ternary Blended Calcined Clay and Steel Slag

Boakye,

Khorami

2024

Infrastructures

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The recent emphasis on sustainable development in the construction industry has made it essential to develop construction and building materials that are not only affordable, but have minimal negative impact on the environment. This study investigates the valorisation of steel slag, which is mostly considered to be a waste material in several parts of the world, by blending with calcined impure kaolinitic clay to partially replace ordinary Portland cement (OPC) in the preparation of self-compacting concrete (SCC). OPC was substituted with steel slag at a constant level of 10%, whereas calcined clay replaced OPC at varying levels, ranging from 10 to 30% in a ternary blended mix. The hardened properties evaluated include compressive and flexural strengths. Samples containing only calcined clay showed a lower fluidity, which was significantly improved when steel slag was added to the mix. SCC containing 10% steel slag and 20% calcined clay obtained 28 days compressive strength, which was 3.6% higher than the reference cement concrete. An XRD analysis revealed a significant decrease in the peak heights of portlandite in mixtures containing steel slag and calcined clay, regardless of their replacement percentage. Generally, all the blended cement samples performed appreciably in resisting sulphate attack. The results of this study demonstrate that using steel slag and calcined clay together can significantly improve the fresh and hardened properties of SCC without compromising its mechanical properties.

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Coal Combustion Fly Ash

Baláž

2021

Environmental Mechanochemistry

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PCA effect on structure of fly ashes and slag obtained by mechanosynthesis. Applications: Mechanical performance of substituted paste CEMI + 50% slag /or fly ashes

Cited by 18 publications

References 40 publications

Effects of Fineness and Content of Phosphorus Slag on Cement Hydration, Permeability, Pore Structure and Fractal Dimension of Concrete

Effects of Fineness and Content of Phosphorus Slag on Cement Hydration, Permeability, Pore Structure and Fractal Dimension of Concrete

Properties of Self-Compacting Concrete (SCC) Prepared with Binary and Ternary Blended Calcined Clay and Steel Slag

Coal Combustion Fly Ash

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PCA effect on structure of fly ashes and slag obtained by mechanosynthesis. Applications: Mechanical performance of substituted paste CEMI + 50% slag /or fly ashes

Cited by 18 publications

References 40 publications

Effects of Fineness and Content of Phosphorus Slag on Cement Hydration, Permeability, Pore Structure and Fractal Dimension of Concrete

Effects of Fineness and Content of Phosphorus Slag on Cement Hydration, Permeability, Pore Structure and Fractal Dimension of Concrete

Properties of Self-Compacting Concrete (SCC) Prepared with Binary and Ternary Blended Calcined Clay and Steel Slag

Coal Combustion Fly Ash

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Product

Resources

About

PCA effect on structure of fly ashes and slag obtained by mechanosynthesis. Applications: Mechanical performance of substituted paste CEMI + 50% slag /or fly ashes