Crude palm oil as an encapsulated rejuvenator for self-repairing asphalts

Authors

  • Erik Alpizar-Reyes Departamento de Ingeniería en Maderas
  • Silvia Caro Universidad de los Andes
  • Diana B. Sánchez Universidad de los Andes
  • José Norambuena- Contreras LabMAT, Universidad del Bío-Bío

Keywords:

Crude palm oil, Biological alginate, Encapsulation, Self-repair

Abstract

Ageing of asphalt cement is one of the main causes of cracking in asphalt pavements. In recent years, significant progress has been made in the development of new encapsulated rejuvenators for asphalt materials, promoting the development of innovative self-healing pavements. This study evaluated the production and characterisation of alginate capsules containing crude palm oil as a promising rejuvenator for the extrinsic self-repair of long-term aged asphalt cements. Thermogravimetric analysis (TGA-DTGA) and attenuated total reflectance (ATR)-FTIR were used to characterise the palm oil. The production of alginate capsules with palm oil was carried out using a microencapsulation equipment that was equipped with an extrusion system with a vibrating nozzle. The encapsulation process was controlled by its encapsulation variables. The impact of the vibratory encapsulation variables on the properties of the capsules was evaluated, considering surface morphology, surface oil and encapsulation efficiency. The main encapsulation results showed that the properties of crude palm oil capsules are affected by the encapsulation parameters with a morphology and mechanical stability suitable for asphalt mixtures. Overall, it was demonstrated that capsules containing crude palm oil have the potential to act as a rejuvenator to promote self-repair of cracked asphalt.

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Published

2025-04-30

How to Cite

Alpizar-Reyes, E., Caro, S., Sánchez, D. B., & Norambuena- Contreras, J. (2025). Crude palm oil as an encapsulated rejuvenator for self-repairing asphalts . Journal of Construction and Civil Engineering, 13(1), 1–6. Retrieved from https://rioc.ufro.cl/index.php/rioc/article/view/3382

Issue

Vol. 13 No. 1 (2025): RIOC

Section

Articles

License

Copyright (c) 2025 Erik Alpizar-Reyes, Silvia Caro, Diana B. Sánchez, José Norambuena- Contreras

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