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Çѱ¹µµ·ÎÇÐȸ / v.12, no.2, 2010³â, pp.17-23
¹ÙÀδõ °­¼ºÀÌ ¾Æ½ºÆÈÆ® ÄÜÅ©¸®Æ®ÀÇ ÀÎÀå°­µµ¿Í ¼Ò¼ºº¯Çü Ư¼º¿¡ ¹ÌÄ¡´Â ¿µÇ⠺м®
( Binder Stiffness Effect on Permanent Deformation and Tensile Strength of Asphalt Concretes )
±èÇöȯ;À¯¹Î¿ë;±èÁøÃ¶;±è±¤¿ì; °­¿ø´ëÇб³ Áö¿ª°Ç¼³°øÇаú;°­¿ø´ëÇб³ Áö¿ª°Ç¼³°øÇаú;°­¿ø´ëÇб³ Áö¿ª°Ç¼³°øÇаú;°­¿ø´ëÇб³ Áö¿ª°Ç¼³°øÇаú;
 
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»ó´ëÀûÀ¸·Î °­¼ºÀÌ Å« ¹ÙÀδõ°¡ ³ôÀº ¼Ò¼ºº¯Çü ÀúÇ׷°ú ÀÎÀå°­µµ¸¦ º¸À̹ǷΠ¹ÙÀδõ °­¼ºÀÌ ¾Æ½ºÆÈÆ® È¥ÇÕ¹°ÀÇ ·¯ÆÃ°ú ÀÎÀå°­µµ¿¡ ´ëÇØ Áß¿äÇÑ ÀÎÀÚ¶ó ÇÒ ¼ö ÀÖ´Ù. È¥ÇÕ¹°ÀÇ ÀÎÀå Æ¯¼ºÀº $25^{circ}C$¿¡¼­ °£Á¢ÀÎÀå°­µµ(ITS) ½ÃÇèÀ¸·Î, ±×¸®°í ¼Ò¼ºº¯Çü ÀúÇ×¼ºÀº °¡Àå º¸ÆíÀûÀ¸·Î $60^{circ}C$¿¡¼­ ¹Ýº¹ÁÖÇà(WT) ½ÃÇè¿¡ ÀÇÇØ ÃøÁ¤µÈ´Ù. º¯Çü°­µµ($S_D$)´Â $60^{circ}C$¿¡¼­ ¾Æ½ºÆÈÆ® ÄÜÅ©¸®Æ®ÀÇ ¼Ò¼ºº¯Çü ÀúÇ×¼º ÃßÁ¤À» À§ÇØ »õ·Ó°Ô °³¹ßµÈ Ư¼ºÀÌ´Ù. ITS¿Í $S_D$´Â Á¤ÀûÀçÇÏ ½ÃÇè¿¡ ÀÇÇØ ÃøÁ¤µÇ¾î ¸Å¿ì °£´ÜÇÏÁö¸¸, WT´Â »ó´ëÀûÀ¸·Î ±ä ½Ã°£°ú ³ë·ÂÀ» ÇÊ¿ä·Î ÇÏ´Â ¹Ýº¹ ÇÏÁß¿¡ ÀÇÇØ ¾ò¾îÁø´Ù. ÀÌ 3°¡Áö Ư¼ºÀº ¸ðµÎ ¹ÙÀδõ °­¼º¿¡ ÀÇÁ¸Çϱ⠶§¹®¿¡, ÇѰ¡Áö·ÎºÎÅÍ ´Ù¸¥ ÇϳªÀÇ Æ¯¼ºÀ» ÃßÁ¤ÇÏ´Â °ÍÀÌ °¡´ÉÇÒ °ÍÀÌ´Ù. º» ¿¬±¸´Â ITS ¶Ç´Â $S_D$½ÃÇè¿¡ ÀÇÇÑ WT ¼Ò¼ºº¯Çü Ư¼º, ±×¸®°í $S_D$¿¡ ÀÇÇÑ ITS ÃßÁ¤ÀÇ °¡´É¼ºÀ» Á¶»çÇÏ¿´´Ù. ITS¿¡ ÀÇÇÑ WT ÃßÁ¤°á°ú $R^2{fallingdotseq}$0.6À¸·Î ITS°¡ ³ôÀ¸¸é WT ħÇϱíÀ̰¡ ³·Àº °æÇâÀ» º¸ÀÌ´Â °ÍÀ¸·Î °üÂûµÆ´Ù. $S_D$¿¡ ÀÇÇÑ ITS ÃßÁ¤Àº $R^2{fallingdotseq}$0.64¸¦, $S_D$¿¡ ÀÇÇÑ WT ÃßÁ¤Àº $R^2{fallingdotseq}$0.84¸¦ º¸¿© 3°¡Áö Áß¿¡¼­ °¡Àå ³ôÀº »ó°ü°ü°è¸¦ ³ªÅ¸³»¾ú´Ù. °á·ÐÀûÀ¸·Î $S_D$¿¡ ÀÇÇÑ ¼Ò¼ºº¯Çü ÀúÇ×¼º ÃßÁ¤ °¡´É¼ºÀÌ »ó´ëÀûÀ¸·Î ³ôÀ¸¸ç, ºñ·Ï $R^2$ÀÌ ´Ù¼Ò ³·±â´Â ÇÏÁö¸¸ WT¿Í ITS °á°ú °£¿¡µµ ¾î´À Á¤µµÀÇ »ó°ü¼ºÀÌ ÀÖ´Ù.
Since the relatively stiff binder shows a higher tensile strength as well as higher rutting resistance, it is believed that the binder stiffness is an important factor for rutting and tensile strength of asphalt mixtures. The typical tensile property is measured by indirect tensile strength (ITS) test at $25^{circ}C$ and the rutting resistance is most widely measured by wheel tracking (WT) test at $60^{circ}C$. The deformation strength ($S_D$) is newly developed property to estimate rut resistance of asphalt concretes at $60^{circ}C$. The ITS and $S_D$ are very simple to measure by static test techniques, but the WT is measured by repeated loading procedure which requires relatively longer time and more efforts. Since these three properties are highly dependent upon the binder stiffness, it may be possible to estimate one property from another. Therefore, this study investigate the possibility of estimating the rutting characteristics (measured by WT test) by ITS or $S_D$ test, and the ITS by $S_D$. Because of binder stiffness effect, in the WT estimation by ITS, a tendency was observed for the higher ITS mixture to have the lower rut depth, giving $R^2{fallingdotseq}$0.6, on the average. The ITS estimation by $S_D$ showed $R^2{fallingdotseq}$0.64, and the WT estimation by SD showed $R^2{fallingdotseq}$0.84, which is highest correlation among the three. Therefore, it was concluded that there is relatively good possibility of estimating WT result by $S_D$, and even though $R^2$ is somewhat low, there is some correlation between WT and ITS.
 
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¾Æ½ºÆÈÆ®;Àç»ý¾Æ½ºÆÈÆ® È¥ÇÕ¹°;¹ÙÀδõ °­¼º;·¯ÆÃ;°£Á¢ÀÎÀå°­µµ;º¯Çü°­µµ;ÈÙÆ®·¡Å· ½ÃÇè;»ó°ü¼º ºÐ¼®;asphalt;recycled asphalt mixture;binder stiffness;rutting;indirect tensile strength;deformation strength($S_D$);wheel tracking test;correlation analysis;
 
Çѱ¹µµ·ÎÇÐȸ³í¹®Áý / v.12, no.2, 2010³â, pp.17-23
Çѱ¹µµ·ÎÇÐȸ
ISSN : 1738-7159
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO201023064629235)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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