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Title |
Effect of Extracted Tempered Glass from End-of-Life Solar Panels on Mechanical Properties of Mortar
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Authors |
최소영(So Yeong Choi) ; 김상우(Sang Woo Kim) ; 김일순(Il Sun Kim) ; 양은익(Eun Ik Yang) |
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DOI |
https://doi.org/10.11112/jksmi.2023.27.2.77 |
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Keywords |
사용수명이 종료된 태양광 패널; 역학적 성능; 공극 분포; 태양광 패널 분리 기술; 강화유리 End-of-life solar panel; Mechanical properties; Pore distribution; Solar panel disassembly technology; Tempered glass |
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Abstract |
As the installation of solar panel accelerates, so does the number of solar panels reaching their end-of-life (EOL). However, the EOL solarpanels is becoming a concern, as they contain potentially hazardous materials and are not easily recycled. Coping strategies such as effective collection,disposal, and recycling methods will be important to manage the growing number of EOL solar panels in the coming years.Therefore, many studieshave focused on the development of EOL solar panel recycling technology. One recycling technology for EOL solar panels applicable to the constructionfield is the application of extracted tempered glass from EOL solar panels as construction materials. This study summarized the EOL solar paneldisassembly technology and evaluated the mechanical properties of mortar using extracted tempered glass as fine aggregate. The results showed thatwhen tempered glass was used as a fine aggregate in mortar, the compressive strength, flexural strength, and macro pores in the 1-3 μm with 200-300μm range were affected, regardless of the disassembly technology of EOL solar panels. Especially, we found that the mechanical performance of mortarusing chemically treated tempered glass was noticeably decreased due to changes in the chemical composition of the extracted tempered glass resultingfrom the removal of K2O and CuO due to chemical reactions. Meanwhile, it was found that when fly ash was used as a binder, the reduction of mechanicalperformance could be alleviated.
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