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Volume 9
Issue 7
10.3390/coatings9070427
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Article

Study on Unsaturated Transport of Cement-Based Silane Sol Coating Materials

by
Wenjuan Zhang
1,
Shaochun Li
1,2,*,
Dongshuai Hou
1,
Yongjuan Geng
1,
Shuliu Zhang
1,
Bing Yin
1 and
Xiangguo Li
2
1
Engineering Research Center of Concrete Technology under Marine Environment, Ministry of Education, Qingdao University of Technology, Qingdao 266033, China
2
State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China
*
Author to whom correspondence should be addressed.
Coatings 2019, 9(7), 427; https://doi.org/10.3390/coatings9070427
Submission received: 5 June 2019 / Revised: 24 June 2019 / Accepted: 3 July 2019 / Published: 5 July 2019
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Abstract

There are many types of concrete protection materials, but silane-based protective materials have excellent performance and durability. Experimental usage of silane sol-based waterproof materials is relatively mature and research studies on microscale mechanisms are relatively sparse. In this paper, molecular dynamics simulations are used to explain the microscopic transmission mechanism by analyzing the transport of water molecules and siloxane molecules in the gel pores, the local structure at the interface, and the molecular dynamics in the pores. Firstly, four models with different concentrations were constructed (0, 0.3, 0.6, and 0.9 mol/L). By comparison, it can be found that as the concentration increases, so does the effect of inhibiting the transport of water molecules in the pores. Based on the determination of the concentration, this paper corrects the arrangement. Next, the three commonly used silanes in the experiment were selected for simulation. It was found that octyltriethoxysilane has good stability and a waterproof effect. Among them, octyltriethoxysilane has a longer alkyl chain and is more stable at the interface, which destroys the original spatial correlation and weakens the capillary adsorption.
Keywords: cement-based materials; calcium silicate hydrate; silicone molecule; durability cement-based materials; calcium silicate hydrate; silicone molecule; durability

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MDPI and ACS Style

Zhang, W.; Li, S.; Hou, D.; Geng, Y.; Zhang, S.; Yin, B.; Li, X. Study on Unsaturated Transport of Cement-Based Silane Sol Coating Materials. Coatings 2019, 9, 427. https://doi.org/10.3390/coatings9070427

AMA Style

Zhang W, Li S, Hou D, Geng Y, Zhang S, Yin B, Li X. Study on Unsaturated Transport of Cement-Based Silane Sol Coating Materials. Coatings. 2019; 9(7):427. https://doi.org/10.3390/coatings9070427

Chicago/Turabian Style

Zhang, Wenjuan, Shaochun Li, Dongshuai Hou, Yongjuan Geng, Shuliu Zhang, Bing Yin, and Xiangguo Li. 2019. "Study on Unsaturated Transport of Cement-Based Silane Sol Coating Materials" Coatings 9, no. 7: 427. https://doi.org/10.3390/coatings9070427

APA Style

Zhang, W., Li, S., Hou, D., Geng, Y., Zhang, S., Yin, B., & Li, X. (2019). Study on Unsaturated Transport of Cement-Based Silane Sol Coating Materials. Coatings, 9(7), 427. https://doi.org/10.3390/coatings9070427

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