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Sodium Alginate Application in Self-healing Technology for Asphalt Concrete
https://orcid.org/http://orcid.org/0000-0002-2965-0846
https://orcid.org/http://orcid.org/0000-0002-2857-0334
The creation of “smart” materials that can independently respond to changes in structure during operation and take measures to eliminate them is a promising direction for increasing the service life of asphalt concrete pavements. The implementation of the technology of self-healing of asphalt concrete can be ensured through the use of encapsulated modifiers, which are a reducing agent inside a functional capsule. Making capsules with a reducing agent through an aqueous solution of sodium alginate is a simple method for encapsulating modifiers. The encapsulation of reducing agents for asphalt concrete can be carried out by extrusion or by means of an emulsion of a reducing agent, which is fixed dropwise through a solution of calcium salt. It has been shown that alginates are an effective component that makes it possible to implement the technology of encapsulation of modifiers (reducing agent) for self-healing asphalt concrete. The regulation of viscosity by controlling the prescription factors will make it possible to use an alginate solution with the required technological properties for encapsulation, including rate of separation of the emulsion into individual drops. The control of recipe parameters allows in a wide range to control the technological properties of alginate solution and emulsions, as well as the parameters of the resulting capsules with a modifier (reducing agent) for self-healing asphalt concrete.
Sodium Alginate Application in Self-healing Technology for Asphalt Concrete
https://orcid.org/http://orcid.org/0000-0002-2965-0846
https://orcid.org/http://orcid.org/0000-0002-2857-0334
The creation of “smart” materials that can independently respond to changes in structure during operation and take measures to eliminate them is a promising direction for increasing the service life of asphalt concrete pavements. The implementation of the technology of self-healing of asphalt concrete can be ensured through the use of encapsulated modifiers, which are a reducing agent inside a functional capsule. Making capsules with a reducing agent through an aqueous solution of sodium alginate is a simple method for encapsulating modifiers. The encapsulation of reducing agents for asphalt concrete can be carried out by extrusion or by means of an emulsion of a reducing agent, which is fixed dropwise through a solution of calcium salt. It has been shown that alginates are an effective component that makes it possible to implement the technology of encapsulation of modifiers (reducing agent) for self-healing asphalt concrete. The regulation of viscosity by controlling the prescription factors will make it possible to use an alginate solution with the required technological properties for encapsulation, including rate of separation of the emulsion into individual drops. The control of recipe parameters allows in a wide range to control the technological properties of alginate solution and emulsions, as well as the parameters of the resulting capsules with a modifier (reducing agent) for self-healing asphalt concrete.
Sodium Alginate Application in Self-healing Technology for Asphalt Concrete
https://orcid.org/http://orcid.org/0000-0002-2965-0846
https://orcid.org/http://orcid.org/0000-0002-2857-0334
The creation of “smart” materials that can independently respond to changes in structure during operation and take measures to eliminate them is a promising direction for increasing the service life of asphalt concrete pavements. The implementation of the technology of self-healing of asphalt concrete can be ensured through the use of encapsulated modifiers, which are a reducing agent inside a functional capsule. Making capsules with a reducing agent through an aqueous solution of sodium alginate is a simple method for encapsulating modifiers. The encapsulation of reducing agents for asphalt concrete can be carried out by extrusion or by means of an emulsion of a reducing agent, which is fixed dropwise through a solution of calcium salt. It has been shown that alginates are an effective component that makes it possible to implement the technology of encapsulation of modifiers (reducing agent) for self-healing asphalt concrete. The regulation of viscosity by controlling the prescription factors will make it possible to use an alginate solution with the required technological properties for encapsulation, including rate of separation of the emulsion into individual drops. The control of recipe parameters allows in a wide range to control the technological properties of alginate solution and emulsions, as well as the parameters of the resulting capsules with a modifier (reducing agent) for self-healing asphalt concrete.
Sodium Alginate Application in Self-healing Technology for Asphalt Concrete
Lecture Notes in Civil Engineering
Klyuev, Sergey Vasil'yevich (editor) / Klyuev, Alexander Vasil'yevich (editor) / Inozemtcev, S. S. (author) / Toan, D. T. (author)
Environmental and Construction Engineering: Reality and the Future ; Chapter: 9 ; 59-65
2021-06-07
7 pages
Article/Chapter (Book)
Electronic Resource
English
Alginate encapsulation technology of bacteria for promising self-healing concrete
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