Simple and effective hydrophobic impregnation of concrete with functionalized polybutadienes

Szymańska, Anna; Dutkiewicz, Michał; Maciejewski, Hieronim; Palacz, Magdalena

doi:10.1016/j.conbuildmat.2021.125624

Cited by 16 publications

(5 citation statements)

References 47 publications

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“…Through hydrophobic modification, the surfaces of cement-based materials transition from hydrophilic to hydrophobic, resulting in reduced water permeability and decreased vulnerability to the damaging effects of erosive ions, thus enhancing durability. Hydrophobic modification can be categorized into surface modification and bulk modification [ 9 ], with the former involving the creation of a hydrophobic protective layer through methods like coating [ 10 , 11 , 12 , 13 ] or impregnation [ 14 , 15 ], and the latter achieved by adding hydrophobic additives to impart overall hydrophobic properties.…”

Section: Introductionmentioning

confidence: 99%

“…Jiang [ 16 ] devised two negative carbon superhydrophobic self-cleaning concrete coatings by incorporating a combination of silane- and silicon-carbide-modified recycled concrete powder (RP). Szymańska [ 15 ] utilized a hydrophobic impregnation technique to convert concrete specimens from hydrophilic to hydrophobic. While surface hydrophobic modification can enhance the impermeability of cement-based materials, it is unable to prevent the infiltration of gases or vapors.…”

Section: Introductionmentioning

confidence: 99%

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The Effect of Hydroxy Silicone Oil Emulsion on the Waterproof Performance of Cement

Quan,

Zhou,

Zhang

et al. 2024

Materials

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The hydrophilic and porous structure of cement-based concrete materials makes it vulnerable to various harmful ions dissolved in water in the environment or during the freeze–thaw cycle, resulting in a significant decline in durability. Therefore, the introduction of hydrophobic hydroxyl silicone oil with good chemical stability and excellent hydrophobic properties during the process of concrete preparation to achieve the hydrophobic modification of its internal holes has very positive significance in terms of improving its durability. In order to disperse the hydrophobic hydroxyl silicone oil evenly in the internal pores of the concrete, synthetic non-ionic polyether-modified silicone oil was used as an emulsifier to make it a water-soluble emulsion. The influences of the composition of the emulsifier on the dispersion, water contact angle, water absorption, porosity, and compressive strength of cement mortar were investigated. The results show that when the emulsion content is 0.5%, the pore volume of the cement mortar decreases by 15%, and the maximum contact angle reaches 128°, which is conducive to improving the anti-erosion and anti-freezing properties of concrete and provides a new solution for the preparation of high-durability concrete. However, the introduction of polyether-modified silicone oil increases the number of large holes in the cement mortar, and leads to an increase in water absorption and a decrease in compressive strength. It is necessary to further optimize the composition of emulsifier in future work.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The Effect of Hydroxy Silicone Oil Emulsion on the Waterproof Performance of Cement

Quan,

Zhou,

Zhang

et al. 2024

Materials

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“…This comprehensive review investigates the technical fact of corrosion resistance in hydrophobic concrete. It explores the techniques and strategies used to heighten the surface and bulk properties of hydrophobic concrete with the purpose of enhancing its corrosion resistance [28]. This assessment is substantial beyond the conventional definitions of a literature overview since it quantifies numerous factors of study developments, establishing statistics based on the point of view of hydrophobic concrete to resist corrosion [29].…”

Section: Introductionmentioning

confidence: 99%

A comprehensive review of hydrophobic concrete: surface and bulk modifications for enhancing corrosion resistance

Gnanaraj S,

2024

Eng. Res. Express

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Corrosion in concrete structures constitutes significant challenges, threatening integrity and requiring high maintenance costs. Hydrophobic concrete presents an emerging solution for addressing corrosion in concrete structures, especially in marine environments. This review article investigates advanced techniques for surface and bulk modifications of hydrophobic concrete, focusing on their efficacy in enhancing corrosion resistance. Surface modifications using silane-siloxane coatings and polyurethane treatments significantly reduce water absorption by up to 30% and chloride ion permeability by up to 50%. Bulk modifications incorporating nano-silica and calcium stearate demonstrate marked improvements in mechanical properties and corrosion resistance, with calcium stearate reducing corrosion rates by 40%. These treatments also contribute to an average increase in compressive strength of 15% and a decrease in corrosion current densities, indicating practical utility in environments such as marine conditions. Additionally, innovative techniques like fluorosilane treatments and steel fibres further fortify impermeability and structural integrity, demonstrating the versatility of hydrophobic concrete in addressing corrosion challenges. Moreover, using eco-friendly ingredients underscores its potential for sustainable infrastructure development. In summary, hydrophobic concrete offers a comprehensive strategy for combating corrosion, providing surface and bulk modifications that enhance durability, reduce maintenance costs, and ensure the long-term sustainability of modern infrastructure.

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“…The structure of concrete is the main determining factor of its main physical and mechanical properties, and methods of strengthening during and after the manufacture of concrete elements affect the parameters of reliable operation [1]. Recently, the use of surface impregnation materials, such as water-repellent agents, to protect newly built or repair and restore concrete structures has gained some popularity, in particular, for building and structures in many countries [3,4]. Such solutions contribute to reducing the penetration of water or gas into the concrete and demonstrate their manufacturability for construction.…”

Section: Introductionmentioning

confidence: 99%

Improvement of Concrete Parameters by the Method of Sodium Silicates Impregnation by Internal Vacuum Tamping

Shumakov,

Miroshnikov,

Younis

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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A fundamentally new technology of intensive saturation of the porous space of concrete or reinforced concrete has been developed, which makes it possible to significantly increase the degree of filling the pores and, therefore, to extent increase the strength and density of the material being saturated with a hardening liquid. The results of the experiments show that the strength of concrete has increased, and the water absorption rate has significantly decreased. This is achieved by creating an internal vacuum in the cement matrix. The structure of the porous space of concrete after impregnation became significantly denser: capillaries, pores, microcracks and various defects were filled with sodium silicate and created a structure that practically does not allow moisture to penetrate into the concrete body, the water absorption value decreased to 1.15%.

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Simple and effective hydrophobic impregnation of concrete with functionalized polybutadienes

Cited by 16 publications

References 47 publications

The Effect of Hydroxy Silicone Oil Emulsion on the Waterproof Performance of Cement

The Effect of Hydroxy Silicone Oil Emulsion on the Waterproof Performance of Cement

A comprehensive review of hydrophobic concrete: surface and bulk modifications for enhancing corrosion resistance

Improvement of Concrete Parameters by the Method of Sodium Silicates Impregnation by Internal Vacuum Tamping

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