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Çѱ¹Áö¹Ý°øÇÐȸ / v.23, no.12, 2007³â, pp.25-32
È­ÇÐÀû ħ½ÄÀ» ¹ÞÀº Àç·¡½Ä ÅͳΠÄÜÅ©¸®Æ® ¶óÀÌ´×ÀÇ ³»±¸¼º´É ¹× ¿­È­Æ¯¼º
( Characterization of Durability and Deterioration Eroded by Chemical Attack on the Concrete Lining in Conventional Tunnel )
±èµ¿±Ô;À̽ÂÅÂ;Á¤È£¼·; Çѱ¹°Ç¼³±â¼ú¿¬±¸¿ø ÁöÇϱ¸Á¶¹°¿¬±¸½Ç;±¹¸³±º»ê´ëÇб³ Åä¸ñȯ°æ°øÇкÎ;Çѱ¹°Ç¼³±â¼ú¿¬±¸¿ø ÁöÇϱ¸Á¶¹°¿¬±¸½Ç;
 
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º» ¿¬±¸¿¡¼­´Â È­ÇÐÀû ħ½ÄÀ» ¹Þ´Â ȯ°æ¿¡ ³õÀÎ ÅͳΠÄÜÅ©¸®Æ® ¶óÀÌ´× ±¸Á¶¹°ÀÇ ¼º´ÉÀúÇÏ ¿øÀÎÀ» ºÐ¼®Çϱâ À§ÇÏ¿© Áذø ÈÄ 70³â µÈ ÅͳΠ±¸Á¶¹°À» ´ë»óÀ¸·Î ¿Ü°üÁ¶»ç, ºñÆÄ±«°Ë»ç, ÄÚ¾î½ÃÆíÀÇ ¾ÐÃà°­µµ, ź»êÈ­, Åõ¼ö¼º Æò°¡ ¹× ±â±âºÐ¼®À» ½Ç½ÃÇÏ¿´´Ù. ±× °á°ú ´ë»ó ÅͳΠ±¸Á¶¹°Àº ¼öÂ÷·Ê¿¡ °ÉÃÄ º¸¼ö ¹× º¸°­°ø»çÀÇ ÈçÀûÀÌ Á¸ÀçÇÏ¿´À¸¸ç ³»ºÎ ÄÜÅ©¸®Æ® ¶óÀÌ´×ÀÇ ½ÉÇÑ ±Õ¿­, ´©¼ö ¹× Å»¶ôÇö»ó µîÀ¸·Î ¼º´ÉÀúÇϰ¡ Å©°Ô ¹ß»ýÇÑ »óÅ¿´´Ù. ÄÜÅ©¸®Æ® ¶óÀÌ´×ÀÇ ºñÆÄ±« ¾ÐÃà°­µµÃßÁ¤°ú ÄÚ¾î½ÃÆí¿¡ ÀÇÇÑ ¾ÐÃà°­µµ´Â À§Ä¡¸¶´Ù Â÷ÀÌ´Â ÀÖ¾úÀ¸³ª °¢°¢ $17.5{sim}34.7MPa$ ¹× $12.8{sim}40.3MPa$·Î ³ªÅ¸³µÀ¸¸ç, ¹Ý¹ß°æµµ¹ýÀÇ °æ¿ì ÄÜÅ©¸®Æ® Ç¥¸éÀÌ ´©¼ö ¹× ¹ÝÀÀ»ý¼º¹°ÀÇ ¿µÇâÀ¸·Î ¹Ý¹ß°æµµ°¡ ÀÛ°Ô ³ªÅ¸³ª´Â °æ¿ì°¡ ÀÖ¾ú´Ù. ÄÜÅ©¸®Æ® ¶óÀÌ´× ÄÚ¾î½ÃÆíÀ» ÀÌ¿ëÇÏ¿© ÀüÀ§Â÷¿¡ ÀÇÇÑ ÃËÁø ¿°¼ÒÀ̿ Ȯ»ê½ÇÇè¹ýÀ¸·Î Åõ¼ö¼º ½ÃÇè°á°ú ÀϺΠÄÚ¾î ½ÃÆíÀ» Á¦¿ÜÇÑ ´ëºÎºÐ ³·Àº(Low) ¿µ¿ªÀ¸·Î ¿ì¼öÇÑ °á°ú¸¦ ³ªÅ¸³»¾ú´Ù. ¶ÇÇÑ ÅͳΠÄÜÅ©¸®Æ® ¶óÀÌ´× ÄÚ¾î½ÃÆíÀ» ´ë»óÀ¸·Î ¹Ì¼¼±¸Á¶¸¦ ºÐ¼®ÇÑ °á°ú ÅͳΠÄÜÅ©¸®Æ® ¶óÀÌ´× ÁÖº¯ ÁöÇϰø°£À¸·ÎºÎÅÍ À¯ÀÔµÈ È²»ê¿°ÀÌ¿ÂÀÇ ¿µÇâÀ¸·Î ¹ÝÀÀ¹°ÁúÀÌ »ý¼ºµÇ¾î ¼º´ÉÀÌ ÀúÇϵǾúÀ¸¸ç, ettringite¿Í thaumasite µîÀÇ »ý¼º¿¡ ÀÇÇÑ °áÁ¤¾Ð¿¡ ÀÇÇÏ¿© ±Õ¿­ ¹× ¹Ú¸®Çö»óÀÌ ¹ß»ýÇÑ °ÍÀ¸·Î ÆÇ´ÜµÈ´Ù. µû¶ó¼­ °í³»±¸¼º ÄÜÅ©¸®Æ® ¶óÀÌ´×ÀÇ Á¦Á¶¸¦ À§ÇÑ Àç·áÀû ´ëÃ¥¼ö¸³ ¹× °ü·ÃÁöħ¾ÈÀÇ Á¦Á¤ÀÌ ÇÊ¿äÇÒ °ÍÀ¸·Î »ý°¢µÈ´Ù.
This study is to evaluate the effect of chemical attack on durability and deterioration of lining concrete in tunnel. Surface examination, nondestructive inspection, uniaxial compressive strength test, carbonation test, chloride diffusion test, micro-structural analysis were performed to analyze the deterioration of lining concrete in tunnel constructed 70 years ago. From surface examination results, the tunnel had been repaired and reinforced in several times. It has many cracks, water-leakage, efflorescence and exploitation. Compressive strengths obtained from nondestructive inspection and uniaxial compressive strength test have measured $17.5{sim}34.7MPa$, and $12.8{sim}40.3MPa$, respectively. Carbonation depth specimen cored from concrete lining has ranged from 3mm to 27mm. From chloride diffusion test, most specimens have low permeability. And the XRD analysis was able to detect ettringite and thaumasite, which were confirmed by SEM and EDS results to be the causes for the deterioration of lining concrete.
 
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Chemical attack;Concrete lining;Deterioration;Durability;Micro-structural analysis;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.23, no.12, 2007³â, pp.25-32
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200706414473825)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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