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Study on the Influence of Corrosion and Cracking in the Phosphate-Based Geopolymer Concrete Incorporated with Copper Slag
https://orcid.org/http://orcid.org/0000-0002-4169-5588
The corrosion rate is an essential parameter for predicting the service life of reinforced structural parts. The Tafel plots derived from the linear polarization resistance techniques, accelerated corrosion test, and gravimetric weight loss method were used to evaluate the corrosion performance of the reinforced steel of the proposed geopolymer concrete (GPC). The influence of molarity on compressive strength and corrosion test (through the chloride ion penetration) of the optimum mix proportions in the binary and ternary blends has been investigated. In this research, copper slag is fully replaced with fine aggregate, and the binder composition of GPC was prepared from class F fly ash, GGBS, and rock phosphate powder (RPP) for ternary mix proportions which was adopted, and GGBS and RPP for the production of binary blends in the 12 and 14 molar concentration were investigated for the constant silica/hydroxide ratio of 2 and alkaline/binder ratio of 0.35 for the cylindrical specimens with steel bar embedded at 20-mm coverings. When compared to standard concrete, the GPC lollipop sample significantly reduced the corrosion rate even in the presence of a 5% chloride environment. This is because phosphate’s natural corrosion-inhibiting property has decreased the deleterious impact of the copper slag and improved the performance of the structure.
Study on the Influence of Corrosion and Cracking in the Phosphate-Based Geopolymer Concrete Incorporated with Copper Slag
https://orcid.org/http://orcid.org/0000-0002-4169-5588
The corrosion rate is an essential parameter for predicting the service life of reinforced structural parts. The Tafel plots derived from the linear polarization resistance techniques, accelerated corrosion test, and gravimetric weight loss method were used to evaluate the corrosion performance of the reinforced steel of the proposed geopolymer concrete (GPC). The influence of molarity on compressive strength and corrosion test (through the chloride ion penetration) of the optimum mix proportions in the binary and ternary blends has been investigated. In this research, copper slag is fully replaced with fine aggregate, and the binder composition of GPC was prepared from class F fly ash, GGBS, and rock phosphate powder (RPP) for ternary mix proportions which was adopted, and GGBS and RPP for the production of binary blends in the 12 and 14 molar concentration were investigated for the constant silica/hydroxide ratio of 2 and alkaline/binder ratio of 0.35 for the cylindrical specimens with steel bar embedded at 20-mm coverings. When compared to standard concrete, the GPC lollipop sample significantly reduced the corrosion rate even in the presence of a 5% chloride environment. This is because phosphate’s natural corrosion-inhibiting property has decreased the deleterious impact of the copper slag and improved the performance of the structure.
Study on the Influence of Corrosion and Cracking in the Phosphate-Based Geopolymer Concrete Incorporated with Copper Slag
https://orcid.org/http://orcid.org/0000-0002-4169-5588
The corrosion rate is an essential parameter for predicting the service life of reinforced structural parts. The Tafel plots derived from the linear polarization resistance techniques, accelerated corrosion test, and gravimetric weight loss method were used to evaluate the corrosion performance of the reinforced steel of the proposed geopolymer concrete (GPC). The influence of molarity on compressive strength and corrosion test (through the chloride ion penetration) of the optimum mix proportions in the binary and ternary blends has been investigated. In this research, copper slag is fully replaced with fine aggregate, and the binder composition of GPC was prepared from class F fly ash, GGBS, and rock phosphate powder (RPP) for ternary mix proportions which was adopted, and GGBS and RPP for the production of binary blends in the 12 and 14 molar concentration were investigated for the constant silica/hydroxide ratio of 2 and alkaline/binder ratio of 0.35 for the cylindrical specimens with steel bar embedded at 20-mm coverings. When compared to standard concrete, the GPC lollipop sample significantly reduced the corrosion rate even in the presence of a 5% chloride environment. This is because phosphate’s natural corrosion-inhibiting property has decreased the deleterious impact of the copper slag and improved the performance of the structure.
Study on the Influence of Corrosion and Cracking in the Phosphate-Based Geopolymer Concrete Incorporated with Copper Slag
Iran J Sci Technol Trans Civ Eng
Dharmar, Brindha (author) / Muthuramalingam, Pandieswari (author) / Kumar, Pradeep (author)
2023-12-01
11 pages
Article (Journal)
Electronic Resource
English
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