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Çѱ¹µµ·ÎÇÐȸ / v.7, no.2, 2005³â, pp.69-76
¾Æ½ºÆÈÆ® È¥ÇÕ¹°ÀÇ ¼Õ»óȸº¹ Ư¼º Æò°¡
( Evaluation of Healing Properties of Asphalt Mixtures )
±èºÎÀÏ; Çѱ¹°Ç¼³±â¼ú¿¬±¸¿ø µµ·Î¿¬±¸ºÎ;
 
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¹Ýº¹ÀûÀÎ ±³ÅëÇÏÁßÀº ¾Æ½ºÆÈÆ® Æ÷Àå¿¡ ¼Õ»óÀ» ´©Àû½ÃŰ´Â ¹Ý¸é, È޽ı⠵¿¾È ¾Æ½ºÆÈÆ® È¥ÇÕ¹°¿¡´Â ÃàÀûµÈ ¼Õ»óÀÇ È¸º¹Çö»óÀÌ Áö¼ÓÀûÀ¸·Î ÀϾ´Ù. ÀÌ·¯ÇÑ ¼Õ»óȸº¹ Çö»óÀº ¾Æ½ºÆÈÆ® Æ÷ÀåÀÇ ÇǷμö¸íÀ» Áõ°¡½ÃŲ´Ù. º» ¿¬±¸¿¡¼­´Â °£Á¢ÀÎÀå½ÃÇèÀ» ÀÌ¿ëÇÏ¿© ¾Æ½ºÆÈÆ® È¥ÇÕ¹°ÀÇ ¼Õ»óȸº¹Æ¯¼ºÀ» ÃøÁ¤ÇÒ ¼ö ÀÖ´Â ½ÃÇè¹æ¹ýÀ» °³¹ßÇϰí, À̸¦ ÅëÇØ ÀÏ´Ü ¾Æ½ºÆÈÆ®¿Í °³Áú ¾Æ½ºÆÈÆ®¸¦ Æ÷ÇÔÇÏ´Â ÃÑ ³× °¡Áö ¾Æ½ºÆÈÆ® È¥ÇÕ¹°ÀÇ ¼Õ»óȸº¹Æ¯¼ºÀ» Æò°¡ÇÏ¿´´Ù. º» ¿¬±¸¿¡¼­ °³¹ßÇÑ ¼Õ»óȸº¹½ÃÇèÀº ¹Ýº¹ÀçÇϽÃÇè°ú ÀÏ·ÃÀÇ $M_R$½ÃÇèÀ¸·Î ±¸¼ºµÈ´Ù. ¹Ýº¹ÀçÇϽÃÇè°ú $M_R$ ½ÃÇè µ¿¾È ȸº¹º¯Çü (resilient deformation)À» ÃøÁ¤Çϰí ÀÀ·Â°ú º¯Çü·üÀ» ÀÌ¿ëÇÏ¿© DCSE (Dissipated Creep Strain Energy)¸¦ ±¸Çϰí À̸¦ ÅëÇØ ¾Æ½ºÆÈÆ® È¥ÇÕ¹°ÀÇ ¼Õ»óȸº¹Æ¯¼ºÀ» Æò°¡ÇÒ ¼ö ÀÖ´Â ÆÄ¶ó¸ÞÅͷμ­ $DCSE/DCSE_{applied}$¸¦ ÀÌ¿ëÇÑ Á¤±ÔÈ­µÈ ¼Õ»óȸº¹¼Óµµ (normalized healing rate)¸¦ Á¦¾ÈÇÏ¿´´Ù. ½ÇÇè°á°ú, ¾Æ½ºÆÈÆ® È¥ÇÕ¹°ÀÇ ¼Õ»óȸº¹¼Óµµ´Â ¿Âµµ°¡ Áõ°¡ÇÔ¿¡ µû¶ó Áö¼ö ÇÔ¼öÀûÀ¸·Î Áõ°¡ÇÔÀ» ¾Ë ¼ö ÀÖ¾úÀ¸¸ç, ¾Æ½ºÆÈÆ® È¥ÇÕ¹°ÀÇ ¼Õ»óȸº¹Æ¯¼ºÀº Æú¸®¸Ó °³Áú°ú °°Àº ¾Æ½ºÆÈÆ® ¹ÙÀδõÀÇ Æ¯¼ºº¸´Ù´Â ¾Æ½ºÆÈÆ® ÇÔ·®°ú °°Àº È¥ÇÕ¹°ÀÇ ±¸Á¶ÀûÀΠƯ¼º¿¡ ´õ ¸¹Àº ¿µÇâÀ» ¹ÞÀ½À» ¾Ë ¼ö ÀÖ¾ú´Ù.
While the repeated traffic loading accumulates the damage of asphalt pavement, the damage has being healed during rest periods. And then, this healing enhances the fatigue life of asphalt pavement. A method was developed to determine the healing rate of asphalt mixture in terms of recovered dissipated creep strain energy (DCSE) per unit time, and the healing properties of four different asphalt mixtures were evaluated. The test procedure consists of repeated loading test and periodical resilient modulus tests. A normalized healing rate in terms of $DCSE/DCSE_{applied}$ was defined to evaluate the healing properties independently of the amount of damage incurred in the mixture. From the test results, it was concluded that the healing rates of asphalt mixtures were increased exponentially as the temperature was increased and more affected by the structural characteristics of mixture such as asphalt content than the binder characteristics such as the polymer modification.
 
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¼Õ»óȸº¹Æ¯¼º;¼Ò¸ðµÈ Å©¸®ÇÁ º¯Çü ¿¡³ÊÁö;Á¤±ÔÈ­µÈ ¼Õ»óȸº¹¼Óµµ;healing property;dissipated creep strain energy;normalized healing rate;
 
Çѱ¹µµ·ÎÇÐȸ³í¹®Áý / v.7, no.2, 2005³â, pp.69-76
Çѱ¹µµ·ÎÇÐȸ
ISSN : 1738-7159
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200515637507151)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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