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April 26, 2026Open Access

Self-Healing Performance of Alkali-Activated Geopolymer Concrete via Chemical Precipitation Mechanisms: A Multidisciplinary Investigation of Reaction Kinetics, Microstructural Evolution, and Structural Recovery

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Authors

PTPranav ThepeRPRakesh PurviyaMCManisha R. Chikane

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Overview

Multidisciplinary investigation demonstrates significant crack sealing in alkali-activated geopolymer concrete, suggesting improvements for infrastructure durability.

Key Points

  • The aim is to explore the self-healing mechanisms and performance of alkali-activated geopolymer concrete.
  • Evaluated self-healing in controlled mechanical cracks under varying healing environments.
  • Utilized multiple analytical techniques, including XRD, SEM, and TGA, to assess microstructural changes.
  • Conducted kinetic modeling to determine relationship between healing rate and environmental factors.
  • Achieved 94.3% crack sealing efficiency within 56 days under wet-dry cycling for cracks ≤200 μm.
  • Compressive strength recovery of 87.6% at 90 days for optimally healed specimens.
  • Healing rate demonstrated first-order exponential decay, influenced by NaOH molarity and temperature.

Cite This Study

Thepe et al. (2026) studied this question.

synapsesocial.com/papers/69edacbd4a46254e215b4664https://doi.org/10.5281/zenodo.19742321
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