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- Publisher Website: 10.1016/j.conbuildmat.2023.132707
- Scopus: eid_2-s2.0-85167793397
- WOS: WOS:001055114200001
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Article: Chloride-induced corrosion propagation of alkali-activated slag mortar with pulverized fuel ash and metakaolin replacements
Title | Chloride-induced corrosion propagation of alkali-activated slag mortar with pulverized fuel ash and metakaolin replacements |
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Authors | |
Keywords | Alkali-activated slag Corrosion propagation Fly ash Mercury intrusion porosimetry Metakaolin |
Issue Date | 11-Aug-2023 |
Publisher | Elsevier |
Citation | Construction and Building Materials, 2023, v. 401 How to Cite? |
Abstract | Alkali-activated materials have great potential in reducing CO2 emissions in cement production industry. This study aims to investigate the corrosion propagation performance of alkali-activated slag mortars with various pulverized fuel ash (PFA) and metakaolin (MK) replacements subject to chloride-induced corrosion. The corrosion propagation performances including corrosion potential, corrosion rate and mortar electrical resistivity under wetting and drying cycles in seawater are studied. Scanning electron microscope (SEM), mercury intrusion porosimetry (MIP) and pH value measurement were conducted to analyze the effects of PFA and MK replacements on the relationship between reaction degree, pore structure, pH value and corrosion propagation performances. The results show that the MK replacement can enhance the corrosion propagation resistance of slag-based alkali-activated mortars under high activator concentration while the PFA replacement reduces the resistance to metallic corrosion of alkali-activated mortars. Mechanisms controlling the corrosion propagation are discussed. |
Persistent Identifier | http://hdl.handle.net/10722/338190 |
ISSN | 2023 Impact Factor: 7.4 2023 SCImago Journal Rankings: 1.999 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Chen, Lijie | - |
dc.contributor.author | Khan, Mahram | - |
dc.contributor.author | Deng, Xiaowei | - |
dc.contributor.author | Su, Ray KL | - |
dc.date.accessioned | 2024-03-11T10:26:57Z | - |
dc.date.available | 2024-03-11T10:26:57Z | - |
dc.date.issued | 2023-08-11 | - |
dc.identifier.citation | Construction and Building Materials, 2023, v. 401 | - |
dc.identifier.issn | 0950-0618 | - |
dc.identifier.uri | http://hdl.handle.net/10722/338190 | - |
dc.description.abstract | <p>Alkali-activated materials have great potential in reducing CO<sub>2</sub> emissions in cement production industry. This study aims to investigate the corrosion propagation performance of alkali-activated slag mortars with various pulverized fuel ash (PFA) and metakaolin (MK) replacements subject to chloride-induced corrosion. The corrosion propagation performances including corrosion potential, <a href="https://www.sciencedirect.com/topics/engineering/corrosion-rate" title="Learn more about corrosion rate from ScienceDirect's AI-generated Topic Pages">corrosion rate</a> and mortar electrical resistivity under wetting and drying cycles in seawater are studied. Scanning electron microscope (SEM), mercury intrusion porosimetry (MIP) and pH value measurement were conducted to analyze the effects of PFA and MK replacements on the relationship between reaction degree, pore structure, pH value and corrosion propagation performances. The results show that the MK replacement can enhance the corrosion propagation resistance of slag-based alkali-activated mortars under high activator concentration while the PFA replacement reduces the resistance to metallic corrosion of alkali-activated mortars. Mechanisms controlling the corrosion propagation are discussed.<br></p> | - |
dc.language | eng | - |
dc.publisher | Elsevier | - |
dc.relation.ispartof | Construction and Building Materials | - |
dc.subject | Alkali-activated slag | - |
dc.subject | Corrosion propagation | - |
dc.subject | Fly ash | - |
dc.subject | Mercury intrusion porosimetry | - |
dc.subject | Metakaolin | - |
dc.title | Chloride-induced corrosion propagation of alkali-activated slag mortar with pulverized fuel ash and metakaolin replacements | - |
dc.type | Article | - |
dc.identifier.doi | 10.1016/j.conbuildmat.2023.132707 | - |
dc.identifier.scopus | eid_2-s2.0-85167793397 | - |
dc.identifier.volume | 401 | - |
dc.identifier.eissn | 1879-0526 | - |
dc.identifier.isi | WOS:001055114200001 | - |
dc.identifier.issnl | 0950-0618 | - |