Effect of Na/Al and Si/Al ratios on adhesion strength of geopolymers as coating material
In this study fly ash based aluminosilicate coatings were formulated and the effect of the Na/Al, Si/Al ratios, and curing time upon adhesion strength of geopolymeric coating was measured using Elcometer 108. Geopolymer gained their maximum adhesion within first three days. After 3 days curing on 60...
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| Main Authors: | , , , |
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| Format: | Article |
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Trans Tech Publications Ltd
2014
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| Online Access: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84914145161&doi=10.4028%2fwww.scientific.net%2fAMM.625.85&partnerID=40&md5=dcfc2351416edf58c4e269ab96e578c8 http://eprints.utp.edu.my/31931/ |
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| Summary: | In this study fly ash based aluminosilicate coatings were formulated and the effect of the Na/Al, Si/Al ratios, and curing time upon adhesion strength of geopolymeric coating was measured using Elcometer 108. Geopolymer gained their maximum adhesion within first three days. After 3 days curing on 60oC resulted into a maximum adhesion strength of 10MPa at Si/Al=3 and Na/Al=1.0. Micro structural analysis and Infra red spectroscopy was used to study the geopolymerisation process. Surface profile of fly ash particles shown that degree of reactivity has a direct relation with their surface roughness. © 2014 Trans Tech Publications, Switzerland. |
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