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Alkali-activated materials; crack; self-healing; fibre; self-healing strategies; assessment of healing efficiency; mechanical properties; transport properties; self-healing products; machine learning model.
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Crack Self-Healing In Alkali-Activated Materials: From Mechanisms To Strategies For Enhancing The Healing Efficiency, Lei Zhang
Electronic Thesis and Dissertation Repository
The increasing concern for decarbonizing concrete manufacturing is calling for sustainable construction materials since portland cement production contributes about 8% of global anthropogenic carbon dioxide emissions. Alkali-activated materials (AAMs) have emerged as promising alternative binders to curb carbon dioxide emissions from portland cement production and allow more sustainable construction. In addition, AAMs have desirable mechanical properties and high resistance to acidic and sulphate attacks.
Like conventional concrete, AAMs are quasi-brittle materials with low tensile strength, demonstrating susceptibility to cracking. Cracking-initiated deteriorations such as reinforcing steel corrosion, sulphate attack, and freeze-thaw damage, pose severe threats to the service life of concrete …