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Architecture & Urban Research Institute

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³í¹®¸í PCM ÇÔħ ÆØâÁ¡Åä°¡ Àû¿ëµÈ ÄÜÅ©¸®Æ® º¹ÇÕüÀÇ ¿­Àû ¹× ±â°èÀû ¼º´ÉÆò°¡ / Concrete Composite Containing Lightweight Aggregate Impregnated with Phase Change Material Thermal and Mechanical Performance Evaluation
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¹ßÇà»ç Çѱ¹º¹ÇսżÒÀ籸Á¶ÇÐȸ
¼ö·Ï»çÇ× º¹ÇսżÒÀ籸Á¶ÇÐȸ ³í¹®Áý, Vol.15 No.05 (2024-10)
ÆäÀÌÁö ½ÃÀÛÆäÀÌÁö(43) ÃÑÆäÀÌÁö(8)
ISSN 2093-5145
ÁÖÁ¦ºÐ·ù Àç·á / ±¸Á¶
ÁÖÁ¦¾î Å×Æ®¶óµ¥Ä­; »óº¯È­¹°Áú; ´ÙÁߺ®Åº¼Ò³ª³ëÆ©ºê; Àá¿­; ÇÔħ °æ·®°ñÀç ; tetradecane PCM; MWCNTs; thermal energy storage; impregnated LWA
¿ä¾à1 ÃÖ±Ù Áö±¸¿Â³­È­·Î ÀÎÇØ Æø¿ì, ´« µî ÀÌ»ó±âÈÄ°¡ ¹ß»ýÇϸ鼭 ³ë¸é µ¿°á(ºí·¢¾ÆÀ̽º)·Î ÀÎÇÑ »ç°í ¹× ÀθíÇÇÇØ°¡ ´Ã¾î³ª°í ÀÖ´Â °ÍÀÌ ¹®Á¦°¡ µÇ°í ÀÖ´Ù. À̸¦ ÃÖ¼ÒÈ­Çϱâ À§ÇØ º» ¿¬±¸¿¡¼­´Â ´Ù°ø¼º °ñÀçÀÎ ÆØâÁ¡Åä¿¡ ¿­ÀúÀåÀÌ °¡´ÉÇÑ »óº¯È­¹°Áú(PCM)À» Àû¿ëÇÏ¿´´Ù. PCMÀº »óº¯È­ °úÁ¤¿¡¼­ ¿­¿¡³ÊÁö¸¦ Èí¼ö, ÀúÀå, ¹æÃâÇÒ ¼ö ÀÖ´Â ¼ÒÀç·Î ¿Âµµ¿¡ µû¸¥ °áºùÀ» ÃÖ¼ÒÈ­ÇÒ ¼ö ÀÖ´Ù. µû¶ó¼­ º» ¿¬±¸¿¡¼­´Â ½Ã¸àÆ® º¹ÇÕÀç¿¡ Àû¿ëµÇ´Â PCM ÇÔħÀÌ °¡´ÉÇÑ °æ·®°ñÀç¿¡ Áø°øÇÔħÀ» ½Ç½ÃÇÏ°í ±â°èÀû, ¿­Àû ¼º´É °ËÁõ ¿¬±¸¸¦ ¼öÇàÇÏ¿´´Ù.
¿­Àû ¼º´ÉÀ» Çâ»ó½ÃÅ°±â À§ÇØ ´ÙÁߺ®Åº¼Ò³ª³ëÆ©ºê(MWCNT)¿Í ½Ç¸®Ä«ÈâÀ» ÷°¡ÇÏ¿´´Ù. º» ¿¬±¸¿¡¼­´Â ¹°Ã¼ÀÇ ¿­Àû ¼º´ÉÀ» ÃøÁ¤ÇÒ ¼öÀÖ´Â DSC ½ÇÇèÀ» ÅëÇØ PCM ÇÔħ °æ·®°ñÀç ¹× ÄÜÅ©¸®Æ® º¹ÇÕüÀÇ ¿­Àû ¼º´ÉÀ» °ËÁõÇÏ¿´´Ù. ÄÜÅ©¸®Æ® º¹ÇÕü Á¦ÀÛ ÈÄ ¾ÐÃà°­µµ ½ÃÇè°ú ¿­Àû ¼º´É½ÃÇèÀ» ½Ç½ÃÇÏ¿´´Ù. À̶§ ¿­Àû ¼º´ÉÀ» °ËÁõÇϱâ À§ÇØ Ç׿ÂÇ×½À è¹ö¸¦ ÀÌ¿ëÇÏ¿© ½ÃÇèÀ» ÁøÇàÇÏ¿´´Ù. ¾ÐÃà°­µµ ½ÇÇèÀ» ÅëÇØ MWCNTÀÇ ºÐ»è¾×À» È¥ÀÔÇÑ PCM ÇÔħ ÆØâÁ¡Åä°¡ Àû¿ëµÈ ÄÜÅ©¸®Æ® º¹ÇÕüÀÇ Æò±Õ ¾ÐÃà°­µµ´Â 24MPa ÀÌ»óÀ¸·Î ±¸Á¶¹°¿¡ Àû¿ëÀÌ°¡´ÉÇÔÀ» È®ÀÎÇÏ¿´´Ù. ¿­Àû ¼º´É½ÃÇèÀ» ÅëÇØ PCM ÇÔħ ÆØâÁ¡Åä°¡ Àû¿ëµÈ ÄÜÅ©¸®Æ® º¹ÇÕü´Â ¿µÇÏÀÇ ¿Ü±â¿Âµµ¿¡¼­µµ ¿µ»óÀÇ ¿Âµµ¸¦À¯ÁöÇÒ ¼ö ÀÖÀ½À» È®ÀÎÇÏ¿´´Ù. ÀÌ¿Í °°Àº °á°ú¸¦ ÅëÇØ ÁÖ°Å ¹× »ó¾÷ °Ç¹° ¹× ´Ù¾çÇÑ ±¸Á¶¹°¿¡ Àû¿ëÀÌ °¡´ÉÇÒ °ÍÀ¸·Î ÆǴܵȴÙ.
¿ä¾à2 Due to the effects of global warming, abnormal weather patterns such as heavy rain and snow are becoming more frequent, leading to an increase in accidents and casualties caused by frozen road surfaces (black ice). To address this problem, this study investigates the application of phase change materials (PCM), which are capable of storing heat, to expanded clay, a porous lightweight aggregate. PCMs are materials that can absorb, store, and release thermal energy during phase changes, helping to minimize freezing based on temperature variations. In this study, vacuum impregnation was used to infuse lightweight aggregates with PCM for use in cement composites. The mechanical and thermal performance of these composites was then evaluated. Multi-walled carbon nanotubes (MWCNTs) and silica fume were added to enhance thermal performance. Differential scanning calorimetry was employed to verify the thermal performance of the PCM-impregnated aggregates and the concrete composite. After fabricating the concrete composite, compressive strength and thermal performance tests were conducted. . The compressive strength tests confirmed that the concrete composite, which included PCM-impregnated expanded clay mixed with MWCNT powder, had an average compressive strength exceeding 24 MPa, making it suitable for structural applications. The thermal performance tests demonstrated that this concrete composite could maintain a temperature above freezing even in sub-zero outdoor conditions. These results show potential of the PCM-impregnated concrete composite for application in various types of structures.
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DOI https://doi.org/10.11004/kosacs.2024.15.5.043