环氧树脂-地聚物复合涂层材料耐海水腐蚀性研究

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Abstract Geopolymer has excellent chemical resistance, whereas the high cracking potential limited its application in concrete protective coating. In the present study, epoxy resin-geopolymer (EG) composites were synthesized to improve the ductility and volumetric stability of geopolymer. To explore the feasibility of EG as marine concrete coating, the influences of resin contents on the corrosion resistance and durability of EG in seawater environment were investigated via physical and mechanical testing, seawater conditioning, linear polarization resistance testing, scanning electron microscopy and N₂-adsorption BJH tests. Compared to pure geopolymer, the shrinkage of EG with 20%—30% of resin during curing and after wet-dry cycling was decreased, with which the residual strength of EG was higher than geopolymer after 56 d seawater soaking. For EG coating, the adhesive strength and chloride corrosion resistance were increased with resin content. The linear polarization resistance of EG coa-ting with 30wt% of epoxy resin was about 11 times of the sample without coating after 3 rounds of seawater wet-dry cyclings. The microstructure characterization indicated that the decreased dominant pore size and embedment of resin improved the compactness and energy adsorption capability of geopolymer, and contributed to the decreased shrinkage and enhanced durability of EG. The findings suggested that EG composite can provide promising alternative as anticorrosion coating in marine environment.

Key words： epoxy resin-geopolymer durability chloride resistance porosity

Published: 16 July 2021

CLC number:

TU52

Fund:Hebei Natural Science Foundation (E2019202431, E2019202484); the Hebei Youth Top Talent Fund (BJ2020001) and the Hebei Provincial Overseas Talents Recruiting Fund (C20190506).

About author:: Zeze Armande Loraine Phalé obtained her bachelor degree from the International Institute for Water and Environmental Engineering (2iE) in Burkina Faso in 2012. She is currently a master student in the School of Civil and Transportation Engineering in Hebei University of Technology, and focuses on the synthesis and performance study on organic agents modified geopolymer as marine concrete coating.Mo Zhang works in the School of Civil and Transportation Engineering in Hebei University of Technology as a lecturer and master advisor. She received her master and Ph.D degree from Worcester Polytechnic Institute in U.S in 2011 and 2015, respectively. Her research interests included the synthesis, reaction mechanisms and mole-cular dynamic modeling of geopolymer and composites, the synthesis and properties of 3D printing multi-wastes based cementitious materials, and the recycle of fiber reinforced polymer in cementitious materials. She is taking charge of several research projects funded by NSFC, Hebei Top Talents Projects, Hebei National Science Fund, Chinese Postdoc Fund and etc. She has published 16 research papers, including 11 SCI indexed and 3 EI indexed papers, and has granted 4 Chinese innovation patents and 1 U.S. innovation patent.

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	ZEZE Armande Loraine Phalé
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Cite this article:

ZEZE Armande Loraine Phalé,XU Hongyan,ZHANG Mo, et al. Study on Seawater Corrosion Resistance of Epoxy Resin-Geopolymer Composites Coating[J]. Materials Reports, 2021, 35(Z1): 600-606.

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http://www.mater-rep.com/EN/ OR http://www.mater-rep.com/EN/Y2021/V35/IZ1/600

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