Hydrophobic Modification of a Slag-based Geopolymer Coating. Issue 1 (May 2021)

• Record Type: Journal Article
• Authors: Zhu, Chunyan; Guo, Yaoxiang; Wen, Zhiwen; Zhou, Yu; Zhang, Liangwei; Wang, Zhihan; Fang, Yuan; Long, Wujian
• Is Part Of: IOP conference series. Volume 783:Issue 1(2021)
• Publication Date: 2021-05
• Subjects: Earth sciences -- Periodicals; Environmental sciences -- Congresses; Environmental sciences -- Periodicals; 550.5
• DOI: 10.1088/1755-1315/783/1/012015
• Languages: English
• ISSNs: 1755-1307

Abstract

Abstract: The durability of geopolymer coatings is significantly influenced by water infiltration. In order to reduce the ingress of water, a slag-based geopolymer was modified respectively using methylsilicone oil (MSO) and organic silicon agent (OSO). For the characterization of the surface interaction between geopolymer and liquid, the contact angle, surface energy and critical surface energy of geopolymer were measured by a novel and accurate bubble method. Results show that surface hydrophobic modification of geopolymer is completely achieved by MSO modifier due to the increasing contact angle on the surface of geopolymer and the surface energy of geopolymer decrease to a certain extent. The critical surface energy curve is not only can describe wetting performance of the geopolymer, but also can predict the wetting feature of a specific liquid on the surface of the geopolymer intuitively and quickly.