Publications by authors named "Alise Sapata"
Phosphogypsum (PG) is a phosphate fertiliser by-product. This by-product has a low level of utilisation. Calcium sulphate is dominated in PG similar to gypsum and, therefore, has good binding properties (similar to natural gypsum).
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- This study explores how using waste glass powder and high-frequency ultrasonics (HFUS) affects the properties of aluminum-based ultra-lightweight concrete.
- Replacing up to 80% of Portland cement with waste glass powder delays hydration and lowers compressive strength significantly, but treating a mix with 30% waste glass using HFUS for 60 seconds can restore strength.
- When combined with liquid glass treatment, HFUS improves compressive strength by 87% and density by 32%, and microscopy shows a denser cement matrix, indicating that these methods work well together to enhance concrete performance.