Evaluation of Widely Used Concrete Self-Healing Methods for Use in Road Infrastructure- A Review

Document Type : Original Article

Authors
Neda Kamboozia 1
Amir Salimi 2
Hadiseh Dolati 3
1 Assistant Professor, Department of Civil Engineering, Iran University of Science and Technology (IUST), Tehran, Iran.
2 M.Sc., Grad., Department of Civil Engineering, Iran University of Science and Technology (IUST), Tehran, Iran.
3 B.Sc., Grad., Department of Civil Engineering, Islamic Azad University, Karaj Branch, Karaj, Iran.
10.22034/road.2024.452179.2274
Abstract
Concrete is a material that is sensitive to cracking and often experiences numerous cracks and failures during the casting process and throughout its lifespan. Repairing these cracks in concrete structures, especially in concrete pavements, is challenging and costly, posing a significant issue in concrete pavements. Self-healing concrete offers an economical and functional solution to this problem. However, despite recent advancements and extensive research in self-healing concretes, challenges in implementing these methods in Road infrastructures have delayed their widespread adoption. This article explores common methods for imparting self-healing properties to concrete, including autonomous healing, autogenous healing, and healing through encapsulated agents and additives. A comparative analysis was conducted to determine the most effective method for repairing concrete cracks and its potential for industrial application. Based on the evaluation of the Technology Readiness Level (TRL) of self-healing methods, encapsulating healing agents within containers such as porous aggregates or natural hollow fibers appears to be the most promising solution for enabling self-healing properties in concrete pavements.
Keywords
Self-Healing Concrete
Autonomous Healing
Autogenous Healing
Concrete Pavement
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