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Architecture & Urban Research Institute

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³í¹®¸í »ýºÐÇØ ÄÚÆÃ È¯ÀÌ ¸ð¸£Å¸¸£ÀÇ ±Õ¿­Ä¡À¯¿¡ ¹ÌÄ¡´Â ¿µÇâ Æò°¡ / Effect of Biodegradable Coating Pellets on Crack Healing Performance of Mortars
ÀúÀÚ¸í ÀÌÀçÀ±(Lee, Jae-Yun) ; À±Çö¼·(Yoon, Hyun-Sub) ; ¾ç±ÙÇõ(Yang, Keun-Hyeok)
¹ßÇà»ç ´ëÇѰÇÃàÇÐȸ
¼ö·Ï»çÇ× ´ëÇѰÇÃàÇÐȸ³í¹®Áý, Vol.39 No.1 (2023-01)
ÆäÀÌÁö ½ÃÀÛÆäÀÌÁö(285) ÃÑÆäÀÌÁö(9)
ISSN 2733-6247
ÁÖÁ¦ºÐ·ù ±¸Á¶ / Àç·á
ÁÖÁ¦¾î ±Õ¿­; ÀÚ±âÄ¡À¯; ȯ; »ýºÐÇØ ÄÚÆÃ; Á¤¼öÀ§ Åõ¼ö ½ÃÇè ; Crack; Self Healing; Pellet; Biodegradable Coating; Water Permeability Test
¿ä¾à1 ÀÌ ¿¬±¸¿¡¼­´Â ÄÜÅ©¸®Æ®ÀÇ ±Õ¿­Ä¡À¯¸¦ À§ÇØ Á¦½ÃµÈ ½Ã¸àÆ®°è ¼ÒÀç ¹× ¹ÚÅ׸®¾Æ ¼ÒÀç ±â¹Ý ±Õ¿­Ä¡À¯ ȯ ±â¼ú¿¡¼­ ¹èÇÕ½ÃÀÇ ¹°¸®Àû ¼Õ»ó¹æÁö ¹× ¹ÝÀÀ¼º Á¦¾î¸¦ À§ÇÑ »ýºÐÇØ ÄÚÆÃ ¹æ¾ÈÀ» Á¦½ÃÇÏ¿´À¸¸ç, ÀÌµé ¼ÒÀç°¡ Àû¿ëµÈ ¸ð¸£Å¸¸£ ½ÃÆí¿¡¼­ÀÇ ±Õ¿­Ä¡À¯ ¼º´ÉÀ» Æò°¡ÇÏ¿´´Ù. »ýºÐÇØ ÄÚÆÃ ±Õ¿­Ä¡À¯ ȯÀÌ È¥ÇÕµÈ ¸ð¸£Å¸¸£ÀÇ ±Õ¿­Ä¡À¯ ¼º´ÉÀº °øÄª 0.3 mm ¹× 0.5 mm ÆøÀ¸·Î À¯µµµÈ ½ÃÆíÀÇ Á¤¼öÀ§ Åõ¼ö½ÃÇèÀ» ÅëÇØ Æò°¡µÇ¾ú´Ù. »ýºÐÇØ ÄÚÆÃ µÈ ±Õ¿­Ä¡À¯ ȯÀ» ÅõÀÔÇÑ ¸ð¸£Å¸¸£ ½ÃÆí¿¡¼­ °øÄª 0.3 mm ÆøÀÇ ±Õ¿­Ä¡À¯À²Àº 91¡­97%·Î ³ô°Ô ³ªÅ¸³µ´Ù. ÇÏÁö¸¸, °øÄª 0.5 mm ÆøÀÇ ±Õ¿­ Ä¡À¯À²Àº 37¡­55% ¼öÁØÀ̾ú´Ù. ±Õ¿­Ä¡À¯ ȯÀ» »ýºÐÇØ ÄÚÆÃÇÒ °æ¿ì Ä¡À¯È¿À²¼ºÀº ¾à 10% Çâ»óµÇ¾ú´Ù.
¿ä¾à2 This study developed a biodegradable coating approach for crack self-healing pellets produced using cementitious materials, bacteria to
prevent physical damage and minimize previous reactivity with water from the pellets during the mixing phase of concrete. This study aims
to examine the crack healing efficiency of biodegradable coating pellets through hydrostatic permeability tests using mortar specimens with
nominal crack widths of 0.3 mm and 0.5 mm. Test results showed that the biodegradable coating pellets insignificantly affected the
compressive strength gain of mortars. The crack healing rate due to the addition of these pellets was estimated to be 91-97% for crack
width of 0.3 mm and 37-55% for crack width of 0.5 mm. These rates corresponded to a 10% higher efficiency when compared to that
measured for non-coated pellets.
¼ÒÀåó ´ëÇѰÇÃàÇÐȸ
¾ð¾î Çѱ¹¾î
DOI https://doi.org/10.5659/JAIK.2023.39.1.283
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