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Çѱ¹Áö¹Ý°øÇÐȸ / v.26, no.7, 2010³â, pp.107-115
¼öÁ÷ ¹ÐÆóÇü ÁöÁß¿­±³È¯±â µÚä¿òÀç·Î¼­ ½Ã¸àÆ® ±×¶ó¿ìÆ®ÀÇ Àû¿ë¼º °ËÅä
( Study on Cement-based Grout for Closed-loop Vertical Grout Heat Exchanger )
¹Ú¹®¼­;À§ÁöÇý;ÀÌöȣ;ÃÖÇ×¼®;°­½ÅÇü; °í·Á´ëÇб³ °ÇÃà»çȸȯ°æ°øÇкÎ;°í·Á´ëÇб³ °ÇÃà»çȸȯ°æ°øÇкÎ;°í·Á´ëÇб³ °ÇÃà»çȸȯ°æ°øÇкÎ;°í·Á´ëÇб³ °ÇÃà»çȸȯ°æ°øÇкÎ;°Ç¾ç´ëÇб³ ±â°è°øÇаú;
 
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º» ¿¬±¸¿¡¼­´Â ¼öÁ÷ ¹ÐÆóÇü ÁöÁß¿­±³È¯±â µÚä¿ò ¿ëµµ·Î, ±âÁ¸ º¥Å䳪ÀÌÆ® ±×¶ó¿ìÆ®ÀÇ ´ë¾ÈÀ¸·Î¼­ ½Ã¸àÆ® ±×¶ó¿ìÆ®ÀÇ Àû¿ë¼ºÀ» °ËÅäÇÏ¿´´Ù. ½Ç³» ½ÃÇèÀ» ÅëÇÏ¿© ¹°/½Ã¸àÆ® ºñ, õ¿¬±Ô»ç ÷°¡ºñ Èæ¿¬ ÷°¡ºñÀÇ º¯È­¿¡ µû¸¥ ½Ã¸àÆ® ±×¶ó¿ìÆ® ¿­Àüµµµµ ¹× À¯µ¿¼º¿¡ ¹ÌÄ¡´Â ¿µÇâÀ» Æò°¡ÇÏ¿´À¸¸ç ¹èÇÕºñ¿¡ µû¸¥ ½Ã¸àÆ® ±×¶ó¿ìÆ®ÀÇ ÀÏÃà¾ÐÃà°­µµ¸¦ ÃøÁ¤ÇÏ¿´´Ù. ½ÇÁ¦ ÁöÁß¿­±³È¯±â¿ë ÆÄÀÌÇÁ³» ¼øÈ¯À¯Ã¼ÀÇ ¿Âµµº¯È­°¡ ½Ã¸àÆ® ±×¶ó¿ìÆ®ÀÇ Àç·áÀû ¾ÈÁ¤¼º¿¡ ¹ÌÄ¡´Â ¿µ ÇâÀ» °ËÅäÇϱâÀ§ÇØ $-5^{circ}C$¿Í $50^{circ}C$¸¦ ÇÑ ÁÖ±â·Î ÇÏ¿© ÀÏÃà¾ÐÃà°­µµ¸¦ ¹Ýº¹ÀûÀ¸·Î ÃøÁ¤ÇÏ¿´´Ù. ¶ÇÇÑ, ½Ã¸àÆ® ±×¶ó¿ìÆ®°¡ ÁöÁß¿¡¼­ ¾ç»ýµÈ ÈÄ, ³Ã³­¹æ ¿îÀü¿¡ µû¸¥ ¼øÈ¯¼öÀÇ °èÀýÀû º¯È­¿¡ ÀÇÇÑ ½Ã¸àÆ® ±×¶ó¿ìÆ®¿Í ¼øÈ¯ÆÄÀÌÇÁÀÇ Á¢Ã˸éÀÇ ¾çÈ£ÇÑ ºÎÂø¼º À¯Áö ¿©ºÎ¸¦ ÆÇ´ÜÇϱâ À§ÇØ ½Ã¸àÆ® ±×¶ó¿ìÆ®¿¡ HDPE ÆÄÀÌÇÁ¸¦ »ðÀÔÇÑ ½Ã·áÀÇ µî°¡Åõ¼ö°è¼ö¸¦ flexible wall penneameter) ÀÌ¿ëÇÏ¿© Àå±â°£ ÃøÁ¤ÇÏ¿´´Ù.
In this paper, the applicability of cement grout bas been studied as an alternative to bentontite grout to backfill ground heat exchangers. To provide an optimal mixture design, the groutabilty and thermal conductivity of cement grouts with various mixture ratios were experimentally evaluated and compared. The unconfined compression strength of cement grout specimen was measured, which was exposed to cyclic temperature variation ranging from $50^{circ}C$ to $-5^{circ}C$. In addition, the integrity of the interface between circulating HDPE pipes and cement grout was evaluated by performing equivalent hydraulic conductivity tests, on the specimen. in which a pipe locates at the center of the specimen.
 
Ű¿öµå
Cement grout;Equivalent permeability;coefficient;Thermal conductivity;Workability;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.26, no.7, 2010³â, pp.107-115
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO201033062364992)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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ȸ»ç¼Ò°³ ±¤°í¾È³» ÀÌ¿ë¾à°ü °³ÀÎÁ¤º¸Ãë±Þ¹æÄ§ Ã¥ÀÓÀÇ ÇѰè¿Í ¹ýÀû°íÁö À̸ÞÀÏÁÖ¼Ò ¹«´Ü¼öÁý °ÅºÎ °í°´¼¾ÅÍ
   

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