Study: Turning Gemstone Waste into Cement's Secret Weapon Against Emissions
A groundbreaking study published in AIP Advances explores a novel way to reduce cement's significant contribution to global CO2 emissions. Researchers are investigating the use of gemstone polishing waste as an additive to cement, transforming a waste product into a valuable resource.
The paper, titled 'Effect of gemstone polishing waste on hydration, strength development, and electrical/thermal properties of cement-based materials: A multiscale study', delves into the impacts of gemstone polishing waste on cement at molecular, microscale, and macroscale levels. The study found that adding this waste significantly enhances thermal conductivity, up to 159%, and reduces electrical resistivity, up to 94%. This enhancement opens up possibilities for using silicon carbide-enhanced cement in smart materials like energy-efficient panels or embedded sensors in infrastructure.
The gemstone processing industry, particularly in Guangdong Province, produces large amounts of silicon carbide waste. Researchers are now studying this waste as a potential additive to cement, aiming to keep it out of landfills and reduce emissions. The study found that gemstone waste particles have a weak affinity for calcium ions, which is crucial in the hardening process of cement. Future work includes optimizing blends, ensuring long-term durability, conducting field tests, and exploring the application of this process to other waste types.
The study published in AIP Advances demonstrates the potential of using gemstone polishing waste as an additive in cement. This not only addresses the environmental impact of cement production but also offers opportunities for innovative smart materials. Further research is needed to optimize this process and ensure its long-term viability.
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