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- Technical Innovation
A one‑part, rapid‑setting advanced material that incorporates microencapsulated healing agents (e.g., sodium silicate, epoxy precursors) which rupture upon cracking to autonomously seal microfractures.
- Technical Innovation
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- Research Approach
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- Microcapsule Design: Synthesize polymeric microcapsules (50–200 µm) loaded with liquid healing agent, coated to withstand the high‑alkalinity geopolymer paste.
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- Cement Formulation: Develop a dry mix of calcined aluminum silicate powders, alkali activator in solid form, and microcapsules; simply add water on site.
- Testing: Measure setting time (<10 minutes), compressive strength (>40 MPa at 24 hr), and healing efficiency (recovery of >70 % strength after induced crack).
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- Research Approach