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Çѱ¹µµ·ÎÇÐȸ / v.9, no.4, 2007³â, pp.193-204
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( Suggestion for Determination of Minimum $S_D$ for Rut-Resistable Asphalt Concretes )
±è±¤¿ì;Á¶º´Áø;À̼øÁ¦;µµ¿µ¼ö; °­¿ø´ëÇб³ Áö¿ª±â¹Ý°øÇаú;°­¿ø´ëÇб³ ´ëÇпø Áö¿ª±â¹Ý°øÇаú;;°­¿ø´ëÇб³ ¼®Àç½Å¼ÒÀç¼¾ÅÍ;
 
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º¯Çü°­µµ($S_D$)´Â °í¿Â¿¡¼­ ¾Æ½ºÆÈÆ® È¥ÇÕ¹°ÀÇ ¼Ò¼ºº¯ÇüƯ¼º°ú »ó°ü°ü°è°¡ ³ôÀº Ư¼ºÀ̸ç, APA ½ÃÇè±â´Â ¾Æ½ºÆÈÆ® È¥ÇÕ¹°ÀÇ ¼Ò¼ºº¯ÇüÀúÇ×¼º Æò°¡¿¡ ³Î¸® ÀÌ¿ëµÈ´Ù. µû¶ó¼­ $S_D$¸¦ ÀÌ¿ëÇÑ ¾Æ½ºÆÈÆ® È¥ÇÕ¹°ÀÇ ¼Ò¼ºº¯ÇüÀúÇ×¼º ÃßÁ¤¿¡ »óÀÀÇÏ´Â °ªÀ¸·Î APA ½ÃÇè °á°ú°¡ »ç¿ëµÇ¾úÀ¸¸ç $S_D$¿Í APAÀÇ »ó°ü°ü°è¸¦ ¼³Á¤Çϱâ À§ÇÏ¿© ¸¹Àº µ¥ÀÌÅͰ¡ ¼öÁýµÇ¾ú´Ù. ¾Æ½ºÆÈÆ® °ø½Ãü¸¦ $60^{circ}C$¿¡ 30ºÐ°£ ¼öħÇÑ ÈÄ 50mm/minÀÇ ÇÏÁßÀ» °¡ÇÏ¿© ÃÖ´ëÇÏÁß P¿Í ±×¶§ÀÇ ¼öÁ÷º¯Çü y·Î ºÎÅÍ $S_D$¸¦ °è»êÇÏ¿´´Ù. °°Àº È¥ÇÕ¹°¿¡ ´ëÇÏ¿© APA ½ÃÇèµµ ¼öÇàµÇ¾ú´Ù. APA ħÇϱíÀÌ¿Í $S_D$°£ÀÇ È¸±ÍºÐ¼®À» ¼öÇàÇÏ¿© $R^2=0.76$ÀÌ ¾ò¾îÁ³´Ù. ÀÌ´Â º¯Çü°­µµ ½ÃÇèÀÌ ¾Æ½ºÆÈÆ® È¥ÇÕ¹°ÀÇ °í¿Âº¯Çü ÀúÇ×¼ºÀ» ÃßÁ¤ °¡´ÉÇÑ ½ÃÇè¹ýÀÓÀ» ¾Ï½ÃÇÏ´Â °ÍÀÌ´Ù. ¶ÇÇÑ È¸±ÍºÐ¼® ¸ðµ¨À» ÀÌ¿ëÇÏ¿© ƯÁ¤ µî±Þµµ·ÎÀÇ Ç¥Ãþ ¹× ±âÃþ È¥ÇÕ¹° $S_D$ÀÇ ÀÓ°è°ªÀ» ¼³Á¤ÇÒ ¼ö ÀÖÀ½À» º¸¿´´Ù. À̸¦ ´õ Á¤±³ÇÏ°Ô ¿¬±¸Çϸé ÀÌ ÀÓ°èÄ¡´Â ƯÁ¤Ãþ Æ÷ÀåÈ¥ÇÕ¹°ÀÇ ÇÏÇÑÄ¡·Î ÀÌ¿ëµÉ ¼ö ÀÖÀ» °ÍÀÌ´Ù.
Deformation strength($S_D$) is a property which shows relatively good correlation with rut resistance of asphalt mixtures at high temperature. The Asphalt Pavement Analyzer (APA) is widely used as an equipment for estimating rut resistance of asphalt mixtures. The APA was used as corresponding property of the $S_D$ to estimate rutting resistance of asphalt mixtures. Many data were collected to establish the correlation of $S_D$ with APA. For $S_D$ test, the specimen is submerged into the $60^{circ}C$ water for 30 minutes before applying a vertical load at the speed of 50mm/min to obtain peak load (P) and deformation (y) for $S_D$ calculation. For the same materials, APA test was performed. Relation of the $S_D$ with APA rut depth was evaluated using regression analysis. The $R^2$ value was 0.76, indicating this simple test procedure being a possible method for predicting deformation resistance of asphalt concretes at high temperature. It was also shown that, using the regression model, minimum value(s) of $S_D$ of surface course asphalt mixture or binder course for a particular road level can be determined. The limit values may be possible to use as cut-off value(s) of asphalt mixtures for the layer after further elaborated studies.
 
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º¯Çü°­µµ;¾Æ½ºÆÈÆ® ÄÜÅ©¸®Æ®;Æ÷Àå;·¯ÆÃ;deformation strength;$S_D$ asphalt concrete;pavement;rutting;APA;
 
Çѱ¹µµ·ÎÇÐȸ³í¹®Áý / v.9, no.4, 2007³â, pp.193-204
Çѱ¹µµ·ÎÇÐȸ
ISSN : 1738-7159
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200706414148416)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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