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Effect of primer layer and curing method on geopolymer paste coating properties

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cris.virtual.department Universiti Malaysia Perlis
cris.virtual.department Universiti Malaysia Perlis
cris.virtual.department Universiti Malaysia Perlis
cris.virtualsource.department 739c99dd-15c2-42c8-a06f-7cff45784eaa
cris.virtualsource.department 3159f357-8cad-4424-9487-87386589e7c1
cris.virtualsource.department cb5e5332-d4a9-4920-b376-d54d1228e0b1
dc.contributor.author Farah Farhana Zainal
dc.contributor.author Jie Xin See
dc.contributor.author Noraziana Parimin
dc.contributor.author Nur Farhana Hayazi
dc.contributor.author Sri Hastuty
dc.date.accessioned 2025-02-21T02:29:01Z
dc.date.available 2025-02-21T02:29:01Z
dc.date.issued 2024-12
dc.description.abstract This technical paper presents a comprehensive study on the properties of geopolymer coating applied to mild steel pipelines as a potential alternative to Ordinary Portland cement (OPC) concrete structures. The geopolymer paste was formulated using a mixture of fly ash and alkaline activators, specifically sodium hydroxide (NaOH) solution and sodium silicate (Na2SiO3) solution. Two types of primers, epoxy metal primer and self-etch primer were applied before the geopolymer coating and various curing conditions were investigated. The geopolymer samples were subjected to two different curing processes: one set was cured in an oven at 60°C for 24 hours while the other set was left to cure under ambient conditions. After the curing period, the samples were aged at ambient conditions for 28 days. The properties of the fly ash and geopolymer paste were evaluated through a range of tests including phase analysis, morphology analysis, optical emission spectroscopy (OES) analysis, chemical composition analysis and adhesion strength testing. The results revealed that the geopolymer coatings exhibited surface cracks and efflorescence attributed to unreacted sodium oxide. X-Ray diffraction (XRD) analysis confirmed the presence of quartz, hematite, magnetite, aluminum oxide and mullite in the geopolymer coating. The self-etch primercoated samples demonstrated improved adhesion and corrosion resistance properties with a denser and more cohesive microstructure. The geopolymer coating when applied with a self-etch primer and cured at 60°C for 2 hours, achieved the highest adhesion strength of 2.2 MPa, indicating strong bonding with the mild steel pipelines. These findings contribute to the understanding of geopolymer coatings and their potential application in enhancing the performance and durability of mild steel pipelines, offering a sustainable alternative to conventional concrete coatings with improved corrosion resistance and adhesion properties.
dc.identifier.uri https://ejournal.unimap.edu.my/index.php/ijneam/article/view/1625/993
dc.identifier.uri https://hdl.handle.net/20.500.14170/13705
dc.language.iso en
dc.relation.ispartof International Journal of Nanoelectronics and Materials (IJNeaM)
dc.relation.issn 1985-5761
dc.subject Geopolymer coating
dc.subject Mild steel pipelines
dc.subject Primers
dc.subject Curing conditions
dc.subject Adhesion strength
dc.title Effect of primer layer and curing method on geopolymer paste coating properties
dc.type Resource Types::text::journal::journal article
dspace.entity.type Publication
oaire.citation.endPage 195
oaire.citation.issue Special Issue ICOSM 2023
oaire.citation.startPage 189
oaire.citation.volume 17
oairecerif.author.affiliation Universiti Malaysia Perlis
oairecerif.author.affiliation Universiti Malaysia Perlis
oairecerif.author.affiliation Universiti Malaysia Perlis
oairecerif.author.affiliation Universiti Malaysia Perlis
oairecerif.author.affiliation Universitas Pertamina, Jakarta
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