Fabrication of superhydrophobicity on foamed concrete surface by GO/silane coating

被引：56
作者：
Geng, Yongjuan [1 ,3 ]
Li, Shaochun [1 ,3 ]
Hou, Dongshuai [1 ,3 ]
Zhang, Weifeng [1 ,3 ]
Jin, Zuquan [1 ,3 ]
Li, Qiuyi [2 ,3 ]
Luo, Jianlin [1 ,3 ]
机构：
[1] Qingdao Univ Technol, Sch Civil Engn, Qingdao 266033, Peoples R China
[2] Qingdao Agr Univ, Sch Architectural Engn, Qingdao 266000, Peoples R China
[3] Qingdao Univ Technol, Engn Res Ctr Concrete Technol Marine Environm, Minist Educ, Qingdao 266033, Peoples R China
来源：
MATERIALS LETTERS | 2020年 / 265卷 / 265期
基金：
中国国家自然科学基金;
关键词：
Foamed concrete; GO/silane composite; Superhydrophobic surface; Microstructure; Porous materials; Surfaces; MECHANICAL-PROPERTIES;
D O I：
10.1016/j.matlet.2020.127423
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Foamed concrete is a lightweight building material, but its high water absorption is one of its main disadvantages. The objective of this study was to fabricate, characterize and evaluate a GO/silane superhydrophobic coatings on foamed concrete surface. The results showed that the water contact angle of the foamed concrete was 165.5 degrees and water can roll off from the surface easily. Superhydrophobic modification improves waterproof properties of the foamed concrete obviously, the water sorptivity was reduced about 97.2%. SEM results showed that the superhydrophobic surface was mainly due to the rough structure brought by GO and the low surface energy brought by silane. (C) 2020 Elsevier B.V. All rights reserved.
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页数：4
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