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This article provides a brief description of microcapsule self-healing technique and its potential use in concrete structures. Because concrete is readily available and reasonably priced, it is widely utilised in the building industry globally, despite its susceptibility to the formation of cracks. The longevity and security of concrete buildings are greatly impacted by the existence of cracks and other deterioration occurring during the course of their use. Through the encapsulation of healing material inside microcapsules, which shows rupture upon cracking in cement-based materials, the microcapsule exhibits promise in accomplishing self-healing and increasing durability and strength in the structures. The article first explains the basic ideas behind the science of microcapsule self-healing and then looks at different ways to prepare microcapsules. It also looks into how adding microcapsules affects the basic characteristics of the concrete building. A summary of the efficiency and self-healing mechanisms of microcapsules is also provided.
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http://dx.doi.org/10.1080/02652048.2024.2386278 | DOI Listing |
Chem Asian J
September 2025
Department of Chemistry, Indian Institute of Technology Bhilai, Durg, Chhattisgarh, 491001, India.
Self-healing polymeric coatings represent a transformative class of smart materials capable of autonomously or stimuli-responsively repairing mechanical or environmental damage, thereby significantly extending the operational lifespan of protected substrates. This review systematically elucidates the underlying mechanisms and chemistries enabling self-healing behavior, encompassing both extrinsic strategies such as microcapsules, microvascular networks, and corrosion inhibitor reservoirs and intrinsic approaches based on dynamic covalent (e.g.
View Article and Find Full Text PDFFront Microbiol
August 2025
Key Laboratory of Safety and High-Efficiency Coal Mining, Ministry of Education, Anhui University of Science and Technology, Huainan, China.
This study investigated the impact of key factors on spore germination of , a self-healing bacterium for concrete, and elucidated its impermeability mechanism to provide theoretical and practical guidance for advanced self-healing concrete development. Controlled experiments determined optimal germination conditions: 2 g/L microcapsule concentration, pH 8, and 1 g/L inosine, yielding peak germination efficiency that highlights parameter synergies. Thermal stimulation for 3 minutes effectively triggered germination, presenting a practical activation approach.
View Article and Find Full Text PDFMaterials (Basel)
July 2025
Key Laboratory for Special Area Expressway Engineering of Ministry of Education, Chang'an University, Xi'an 710064, China.
Asphalt pavement cracking is an important factor affecting its service life. Under certain conditions, the self-healing behavior of asphalt itself can repair pavement cracks. However, the self-healing ability of asphalt itself is limited.
View Article and Find Full Text PDFSci Rep
July 2025
School of Civil Engineering, Iran University of Science and Technology (IUST), Narmak, Tehran, Iran.
Cold Mix Asphalt (CMA) is a sustainable alternative to conventional hot mix asphalt (HMA) due to its lower energy consumption and reduced environmental impact. However, CMAs often suffer from high moisture susceptibility, prolonged curing times, and inadequate mechanical performance. This study investigates the potential of calcium alginate capsules (CA capsules) containing waste sunflower oil (WSO) and waste engine oil (WEO) to improve CMA performance.
View Article and Find Full Text PDFPolymers (Basel)
June 2025
Applied Mechanics and Advanced Materials Research Group (AMAMRG) Laboratory, Automotive Engineering Department, Engineering Faculty, Bursa Uludağ University, Bursa 16059, Türkiye.
In this study, a production method for ceramic shell macrocapsules and a high-temperature-resistant, polymer agent-based self-healing system was developed. Two types of macrocapsules were created by filling hollow ceramic capsules with high-temperature-resistant diallyl phthalate (DAP) resin, known for its thermal stability, and a peroxide-based curing agent. These capsules were incorporated into epoxy and DAP matrix materials to develop polymer composite materials with self-healing properties The macrocapsules were produced by coating polystyrene (PS) sacrificial foam beads with raw ceramic slurry, followed by sintering to convert the liquid phase into a solid ceramic shell.
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