Version 1
: Received: 18 April 2024 / Approved: 18 April 2024 / Online: 18 April 2024 (11:19:52 CEST)
How to cite:
Hu, Y.; Jin, Z.; Pang, B.; Du, Z.; Li, X.; Huang, Y. The Impact and Mechanism Analysis of Diatomite on the Sag Resistance of Geopolymer Coatings. Preprints2024, 2024041251. https://doi.org/10.20944/preprints202404.1251.v1
Hu, Y.; Jin, Z.; Pang, B.; Du, Z.; Li, X.; Huang, Y. The Impact and Mechanism Analysis of Diatomite on the Sag Resistance of Geopolymer Coatings. Preprints 2024, 2024041251. https://doi.org/10.20944/preprints202404.1251.v1
Hu, Y.; Jin, Z.; Pang, B.; Du, Z.; Li, X.; Huang, Y. The Impact and Mechanism Analysis of Diatomite on the Sag Resistance of Geopolymer Coatings. Preprints2024, 2024041251. https://doi.org/10.20944/preprints202404.1251.v1
APA Style
Hu, Y., Jin, Z., Pang, B., Du, Z., Li, X., & Huang, Y. (2024). The Impact and Mechanism Analysis of Diatomite on the Sag Resistance of Geopolymer Coatings. Preprints. https://doi.org/10.20944/preprints202404.1251.v1
Chicago/Turabian Style
Hu, Y., Xiangxiang Li and Yuxin Huang. 2024 "The Impact and Mechanism Analysis of Diatomite on the Sag Resistance of Geopolymer Coatings" Preprints. https://doi.org/10.20944/preprints202404.1251.v1
Abstract
The reduction in rheological parameters and dissolution rate of precursors in geopolymer coatings during early hydration significantly contributes to sagging. This study aims to improve the sag resistance of these coatings by incorporating diatomite filler. Rheological testing was conducted to assess the impact of diatomite and its concentration on yield stress, plastic viscosity, and thixotropy of the geopolymer coatings. The results indicated that diatomite's large specific surface area and high reactivity have a significant influence on the rheological parameters and early dissolution rate of precursors. With a diatomite concentration of 1.1%, the coating exhibited a yield stress of 2.749 Pa and a plastic viscosity of 0.921 Pa·s, maintaining stability, homogeneity, and no sagging at a thickness of 600 μm. Furthermore, the highly active SiO2 in diatomite participates in the secondary hydration reaction of the geopolymer materials, leading to the formation of substantial C-(A)-S-H gel. This gel enhances internal interconnectivity within the coating, thereby improving its rheological and mechanical properties.
Keywords
Diatomite; Geopolymer; Sag resistance; Rheological parameters; Inorganic coating.
Subject
Engineering, Civil Engineering
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
