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Waterproofing material using fly ash
August 26 , 2019
1724 days
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- Researchers at the Indian Institute of Technology (IIT) Hyderabad have developed a cheap waterproofing material by coating fly ash.
- Fly ash is a waste by-product from coal-based thermal power plants, with stearic acid, which is a surfactant.
- While fly ash is extremely water-loving (hydrophilic), it turns into a highly water-repelling surface once coated with stearic acid.
- Fly ash varies in size from 100 nanometres to a few microns and can thus provide surfaces with different roughness based on the size of the particles chosen.
- Stearic acid-coated fly ash surface can be made to behave like rose petals or lotus leaves.
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