Optimal dosage of Fe2O3 nanoparticles to enhance chloride resistance and microstructural properties of concrete - A comprehensive study
By: Vanama, Raghava Kumar
.
Contributor(s): Addepalli, Harinee.
Publisher: Thane ACC LTD 2021Edition: Vol.95(4), April.Description: 17-28p.Subject(s): Civil EngineeringOnline resources: Click here
In:
Indian Concrete Journal - ICJSummary: Majority of reinforced concrete port structures in India are experiencing premature failures due to chloride-induced corrosion. The use of concrete that possesses higher chloride penetration resistance and better compact microstructure can potentially increase the corrosion initiation period and thereby, the service life of the structure. The present study investigates the influence of Fe2O3 nanoparticles in improving the durability and microstructural characteristics of concrete. Hematite nanoparticles were synthesised and comprehensively characterised. The characteristics of nano hematite blended concrete have been widely studied by rapid chloride migration, electrical resistivity against chloride migration, mercury intrusion porosimetry and XRD tests. FEG-SEM micrographs of hardened nano blended concrete indicated the strengthening of the Interfacial Transition Zone. Based on the comprehensive study, cement replaced by 0.5 weight percentage of hematite nanoparticles found to be an optimum dosage for a durable concrete in the marine environment.
| Item type | Current location | Call number | Status | Date due | Barcode | Item holds |
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Articles Abstract Database
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School of Engineering & Technology (PG) Archieval Section | Not for loan | 2021-2022097 |
Majority of reinforced concrete port structures in India are experiencing premature failures due to chloride-induced corrosion. The use of concrete that possesses higher chloride penetration resistance and better compact microstructure can potentially increase the corrosion initiation period and thereby, the service life of the structure. The present study investigates the influence of Fe2O3 nanoparticles in improving the durability and microstructural characteristics of concrete. Hematite nanoparticles were synthesised and comprehensively characterised. The characteristics of nano hematite blended concrete have been widely studied by rapid chloride migration, electrical resistivity against chloride migration, mercury intrusion porosimetry and XRD tests. FEG-SEM micrographs of hardened nano blended concrete indicated the strengthening of the Interfacial Transition Zone. Based on the comprehensive study, cement replaced by 0.5 weight percentage of hematite nanoparticles found to be an optimum dosage for a durable concrete in the marine environment.
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