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مهندسی خوردگی 2025, 15(1): 88-88 |
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Sustainable Anti-Corrosion Concrete Using Steelmaking Slag, Pistachio Shell, and Polyaniline: An Environmental Approach. مهندسی خوردگی 2025; 15 (1) :88-88
URL: http://journal.ica.ir/article-1-248-en.html
URL: http://journal.ica.ir/article-1-248-en.html
Abstract: (1 Views)
This research comprehensively investigates the potential for reusing industrial and agricultural wastes,
namely steelmaking slag and pistachio shell, in the production of sustainable concrete with superior
anti-corrosion properties. Considering the annual disposal of significant amounts of steelmaking slag
as environmental pollutants and the challenge of managing agricultural wastes like pistachio shells, this
study presents a novel and environmentally friendly approach aimed at transforming these waste
materials into valuable construction materials. In this study, a composite material comprising
steelmaking slag and hard pistachio shell, along with polyaniline, was utilized as a partial replacement
for Portland cement in concrete formulations. The anti-corrosion properties of the modified concrete
were rigorously evaluated using advanced polarization techniques (including Tafel polarization and
electrochemical impedance) and by measuring its electrical resistivity. Furthermore, the compressive
strength of the concrete specimens was measured to assess their mechanical integrity. The findings of
this research indicate that replacing 10% of Portland cement with the composite of steelmaking slag,
pistachio shell, and polyaniline leads to a significant improvement in concrete performance.
Specifically, after 90 days, the compressive strength of the concrete increased by 42%, its electrical
resistivity improved by 49% and polarisation resistance by 150%. and the corrosion current density
decreased by 37%. These promising results confirm the high potential of this innovative composite in
developing anti-corrosive and sustainable concretes through the efficient utilization of industrial and
agricultural wastes, paving the way for practical applications in the construction industry.
namely steelmaking slag and pistachio shell, in the production of sustainable concrete with superior
anti-corrosion properties. Considering the annual disposal of significant amounts of steelmaking slag
as environmental pollutants and the challenge of managing agricultural wastes like pistachio shells, this
study presents a novel and environmentally friendly approach aimed at transforming these waste
materials into valuable construction materials. In this study, a composite material comprising
steelmaking slag and hard pistachio shell, along with polyaniline, was utilized as a partial replacement
for Portland cement in concrete formulations. The anti-corrosion properties of the modified concrete
were rigorously evaluated using advanced polarization techniques (including Tafel polarization and
electrochemical impedance) and by measuring its electrical resistivity. Furthermore, the compressive
strength of the concrete specimens was measured to assess their mechanical integrity. The findings of
this research indicate that replacing 10% of Portland cement with the composite of steelmaking slag,
pistachio shell, and polyaniline leads to a significant improvement in concrete performance.
Specifically, after 90 days, the compressive strength of the concrete increased by 42%, its electrical
resistivity improved by 49% and polarisation resistance by 150%. and the corrosion current density
decreased by 37%. These promising results confirm the high potential of this innovative composite in
developing anti-corrosive and sustainable concretes through the efficient utilization of industrial and
agricultural wastes, paving the way for practical applications in the construction industry.
Keywords: concrete, steel slag, char, PANI, polarization, electrochemical impedance, electrical
resistivity
Type of Study: Research |
Subject:
General
Received: 2026/01/27 | Accepted: 2025/06/15 | Published: 2025/06/15
Received: 2026/01/27 | Accepted: 2025/06/15 | Published: 2025/06/15
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