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http://dspace.unimap.edu.my:80/xmlui/handle/123456789/67086
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DC Field | Value | Language |
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dc.contributor.author | Warid Wazien, Ahmad Zailani | - |
dc.contributor.author | Bouaissi, Aissa | - |
dc.contributor.author | Mohd Mustafa Al Bakri, Abdullah | - |
dc.contributor.author | Rafiza, Abd Razak | - |
dc.contributor.author | Yoriya, Sorachon | - |
dc.contributor.author | Mohd Arif Anuar, Mohd Salleh | - |
dc.contributor.author | Mohd Remy Rozainy, M. A. Z. | - |
dc.contributor.author | Hamzah, Fansuri | - |
dc.date.accessioned | 2020-09-11T00:57:18Z | - |
dc.date.available | 2020-09-11T00:57:18Z | - |
dc.date.issued | 2020-05 | - |
dc.identifier.citation | Applied Science, vol.10(9), 2020, pages 14 | en_US |
dc.identifier.issn | 2076-3417 (print) | - |
dc.identifier.uri | http://dspace.unimap.edu.my:80/xmlui/handle/123456789/67086 | - |
dc.description | Link to publisher's homepage https://www.mdpi.com/ | en_US |
dc.description.abstract | This investigative study aims to study the mechanical and morphological properties of fly ash (FA)-based geopolymer paste as a repair material when applied on ordinary Portland cement (OPC) overlay concrete. The first part of this study investigates the optimal mix design of FA-based geopolymer paste with various NaOH concentrations of 8, 10, 12, and 14 M, which were used later as a repair material. The second part studies the bonding strength using a slant shear test between the geopolymer repair material and OPC substrate concrete. The results showed that a shorter setting time corresponds to the higher NaOH molarity, within the range of 53 and 30 min at 8 and 14 M, respectively. The compressive strength of FA-based geopolymer paste was found to reach 92.5 MPa at 60 days. Also, from the slant shear test results, prism specimens with 125 mm length and 50 mm wide have a large bond strength of 11 MPa at 12 M. The scanning electron microscopy/energy-dispersive X-ray (SEM/EDX) analysis showed that the OPC substrate has a significant effect on slant shear bond strength, where the presence of free cations of Ca2+ on the OPC substrate surface contributed to the formation of calcium alumina-silicate hydrate gel (C-A-S-H) by building various cross-links of Ca-O-Si. | en_US |
dc.language.iso | en | en_US |
dc.publisher | MDPI AG | en_US |
dc.subject | Fly ash | en_US |
dc.subject | Geopolymer repair material | en_US |
dc.subject | Compressive strength | en_US |
dc.subject | Bonding strength | en_US |
dc.subject | Bonding zone | en_US |
dc.title | Bonding strength characteristics of FA-based geopolymer paste as a repair material when applied on OPC substrate | en_US |
dc.type | Article | en_US |
dc.identifier.url | https://www.mdpi.com/ | - |
dc.identifier.doi | https://doi.org/10.3390/app10093321 | - |
dc.contributor.url | aissabouaissi@yahoo.fr | en_US |
dc.contributor.url | mustafa_albakri@unimap.edu.my | en_US |
dc.contributor.url | warid.wazien92@yahoo.com | en_US |
dc.contributor.url | arifanuar@unimap.edu.my | en_US |
dc.contributor.url | rafizarazak@unimap.edu.my | en_US |
Appears in Collections: | Rafiza Abd Razak, Dr. Mohd Mustafa Al Bakri Abdullah, Prof. Dr. Mohd Arif Anuar Mohd Salleh, Associate Professor Dr. Ir. |
Files in This Item:
File | Description | Size | Format | |
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Bonding Strength Characteristics.pdf | Main article | 2.68 MB | Adobe PDF | View/Open |
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