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Microencapsulated Bio-Based Rejuvenators for the Self-Healing of Bituminous Materials.
Norambuena-Contreras, Jose; Arteaga-Perez, Luis E; Guadarrama-Lezama, Andrea Y; Briones, Rodrigo; Vivanco, Juan F; Gonzalez-Torre, Irene.
Afiliação
  • Norambuena-Contreras J; LabMAT, Department of Civil and Environmental Engineering, Universidad del Bío-Bío, Avenida Collao 1202, Concepción, Chile.
  • Arteaga-Perez LE; LPTC, Laboratory on Thermal and Catalytic Processes, Department of Wood Engineering, Universidad del Bío-Bío, Avenida Collao 1202, Concepción, Chile.
  • Guadarrama-Lezama AY; Facultad de Química, Universidad Autónoma del Estado de México, Paseo Colón esq. Paseo Tollocan s/n, Col. Residencial Colón 50120, Toluca 50000, Estado de México, Mexico.
  • Briones R; CIPA, Centro de Investigación de Polímeros Avanzados, Avenida Collao 1202, Concepción, Chile.
  • Vivanco JF; Facultad de Ingeniería y Ciencias, Universidad Adolfo Ibáñez, Viña del Mar 2562340, Chile.
  • Gonzalez-Torre I; LabMAT, Department of Civil and Environmental Engineering, Universidad del Bío-Bío, Avenida Collao 1202, Concepción, Chile.
Materials (Basel) ; 13(6)2020 Mar 22.
Article em En | MEDLINE | ID: mdl-32235753
Asphalt self-healing by encapsulated rejuvenating agents is considered a revolutionary technology for the autonomic crack-healing of aged asphalt pavements. This paper aims to explore the use of Bio-Oil (BO) obtained from liquefied agricultural biomass waste as a bio-based encapsulated rejuvenating agent for self-healing of bituminous materials. Novel BO capsules were synthesized using two simple dripping methods through dropping funnel and syringe pump devices, where the BO agent was microencapsulated by external ionic gelation in a biopolymer matrix of sodium alginate. Size, surface aspect, and elemental composition of the BO capsules were characterized by optical and scanning electron microscopy and energy-dispersive X-ray spectroscopy. Thermal stability and chemical properties of BO capsules and their components were assessed through thermogravimetric analysis (TGA-DTG) and Fourier-Transform Infrared spectroscopy (FTIR-ATR). The mechanical behavior of the capsules was evaluated by compressive and low-load micro-indentation tests. The self-healing efficiency over time of BO as a rejuvenating agent in cracked bitumen samples was quantified by fluorescence microscopy. Main results showed that the BO capsules presented an adequate morphology for the asphalt self-healing application, with good thermal stability and physical-chemical properties. It was also proven that the BO can diffuse in the bitumen reducing the viscosity and consequently self-healing the open microcracks.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Materials (Basel) Ano de publicação: 2020 Tipo de documento: Article País de afiliação: Chile País de publicação: Suíça
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Materials (Basel) Ano de publicação: 2020 Tipo de documento: Article País de afiliação: Chile País de publicação: Suíça