%K Adhesion; Bond strength (materials); Coatings; Curing; Fly ash; Geopolymers; Inorganic polymers; Microscopic examination; Silicon; Sodium; Surface roughness, Ash particles; Coating material; Curing time; Elcometer 108; Geopolymer; Geopolymerisation; Si/Al ratio; Surface profiles, Strength of materials
%X 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.
%D 2014
%R 10.4028/www.scientific.net/AMM.625.85
%O cited By 14; Conference of 3rd International Conference on Process Engineering and Advanced Materials, ICPEAM 2014 ; Conference Date: 3 June 2014 Through 5 June 2014; Conference Code:114811
%J Applied Mechanics and Materials
%L scholars4737
%T Effect of Na/Al and Si/Al ratios on adhesion strength of geopolymers as coating material
%V 625
%I Trans Tech Publications Ltd
%A M. Irfan Khan
%A K. Azizli
%A S. Sufian
%A Z. Man
%P 85-89