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A platform for research: civil engineering, architecture and urbanism
The effect of various environmental conditions on stabilization/solidification (S/S) of oil-contaminated soil using alkaline activation of granulated blast furnace slag (GBFS)
https://orcid.org/0000-0002-4802-3725
Highlights Alkaline activation of slag, as an eco-friendly material, improves the durability of oil-polluted soil against variations in environmental conditions. Alkaline activation of slag forms cementitious products and creates a dense structure in oil-polluted samples. Stabilization/solidification using alkaline activation of slag traps oil pollution and improves the samples' tolerance levels during the destructive freeze-thaw and wet-dry conditions. Heat accelerates the dissolution of silica and alumina species from aluminosilicates and promotes the strength of slag-based samples.
Abstract Alkali-activated materials (AAMs) have been proposed as sustainable alternatives to traditional stabilizers. This study investigated the effect of freeze-thaw and wet-dry conditions on the durability of oil-contaminated soil stabilized using alkaline activation of granulated blast furnace slag (GBFS). The effect of curing temperature on GBFS-based samples was also evaluated. The main goal was to provide a suitable platform for the use of this eco-friendly material to improve the durability of oil-contaminated soil. Based on unconfined compressive strength (UCS) results and micro and macro investigations, the formation and melting of ice lenses increased the freezing and thawing cycles of the holes and, as a result, the UCS of the GBFS-based samples decreased. As the wet-dry cycle increased to 3, the UCS rose and then decreased. Raising the amount of GBFS and reducing the amount of crude oil in the GBFS-based samples prevented a sharp decrease in UCS and improved durability by increasing the entanglement and connection of particles and creating a denser structure. Increasing the curing temperature by removing free water and accelerating the geopolymerization and hydration reactions caused a further rise in UCS. In general, this study showed the appropriate circumstances for using this stabilization method for crude oil-contaminated soils in different environmental conditions.
The effect of various environmental conditions on stabilization/solidification (S/S) of oil-contaminated soil using alkaline activation of granulated blast furnace slag (GBFS)
https://orcid.org/0000-0002-4802-3725
Highlights Alkaline activation of slag, as an eco-friendly material, improves the durability of oil-polluted soil against variations in environmental conditions. Alkaline activation of slag forms cementitious products and creates a dense structure in oil-polluted samples. Stabilization/solidification using alkaline activation of slag traps oil pollution and improves the samples' tolerance levels during the destructive freeze-thaw and wet-dry conditions. Heat accelerates the dissolution of silica and alumina species from aluminosilicates and promotes the strength of slag-based samples.
Abstract Alkali-activated materials (AAMs) have been proposed as sustainable alternatives to traditional stabilizers. This study investigated the effect of freeze-thaw and wet-dry conditions on the durability of oil-contaminated soil stabilized using alkaline activation of granulated blast furnace slag (GBFS). The effect of curing temperature on GBFS-based samples was also evaluated. The main goal was to provide a suitable platform for the use of this eco-friendly material to improve the durability of oil-contaminated soil. Based on unconfined compressive strength (UCS) results and micro and macro investigations, the formation and melting of ice lenses increased the freezing and thawing cycles of the holes and, as a result, the UCS of the GBFS-based samples decreased. As the wet-dry cycle increased to 3, the UCS rose and then decreased. Raising the amount of GBFS and reducing the amount of crude oil in the GBFS-based samples prevented a sharp decrease in UCS and improved durability by increasing the entanglement and connection of particles and creating a denser structure. Increasing the curing temperature by removing free water and accelerating the geopolymerization and hydration reactions caused a further rise in UCS. In general, this study showed the appropriate circumstances for using this stabilization method for crude oil-contaminated soils in different environmental conditions.
The effect of various environmental conditions on stabilization/solidification (S/S) of oil-contaminated soil using alkaline activation of granulated blast furnace slag (GBFS)
https://orcid.org/0000-0002-4802-3725
Highlights Alkaline activation of slag, as an eco-friendly material, improves the durability of oil-polluted soil against variations in environmental conditions. Alkaline activation of slag forms cementitious products and creates a dense structure in oil-polluted samples. Stabilization/solidification using alkaline activation of slag traps oil pollution and improves the samples' tolerance levels during the destructive freeze-thaw and wet-dry conditions. Heat accelerates the dissolution of silica and alumina species from aluminosilicates and promotes the strength of slag-based samples.
Abstract Alkali-activated materials (AAMs) have been proposed as sustainable alternatives to traditional stabilizers. This study investigated the effect of freeze-thaw and wet-dry conditions on the durability of oil-contaminated soil stabilized using alkaline activation of granulated blast furnace slag (GBFS). The effect of curing temperature on GBFS-based samples was also evaluated. The main goal was to provide a suitable platform for the use of this eco-friendly material to improve the durability of oil-contaminated soil. Based on unconfined compressive strength (UCS) results and micro and macro investigations, the formation and melting of ice lenses increased the freezing and thawing cycles of the holes and, as a result, the UCS of the GBFS-based samples decreased. As the wet-dry cycle increased to 3, the UCS rose and then decreased. Raising the amount of GBFS and reducing the amount of crude oil in the GBFS-based samples prevented a sharp decrease in UCS and improved durability by increasing the entanglement and connection of particles and creating a denser structure. Increasing the curing temperature by removing free water and accelerating the geopolymerization and hydration reactions caused a further rise in UCS. In general, this study showed the appropriate circumstances for using this stabilization method for crude oil-contaminated soils in different environmental conditions.
The effect of various environmental conditions on stabilization/solidification (S/S) of oil-contaminated soil using alkaline activation of granulated blast furnace slag (GBFS)
Arabani, Mahyar (author) / Haghsheno, Hamed (author)
2023-10-30
Article (Journal)
Electronic Resource
English
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