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Çѱ¹µµ·ÎÇÐȸ / v.4, no.4, 2002³â, pp.23-39
¼Ò¼ºº¯Çü°úÀÇ »ó°ü¼º¿¡ ±Ù°ÅÇÑ ¾Æ½ºÆÈÆ® ÄÜÅ©¸®Æ®ÀÇ º¯Çü°­µµ °³¹ßÀ» À§ÇÑ ±âÃÊ¿¬±¸
( A Fundamental Approach for Developing Deformation Strength Based on Rutting Characteristics of Asphalt Concrete )
±è±¤¿ì;À̹®¼·;±èÁØÀº;ÃÖ¼±ÁÖ; °­¿ø´ëÇб³ ³ó¾÷°øÇкÎ;°­¿ø´ëÇб³ ´ëÇпø Áö¿ª±â¹Ý°øÇаú;°­¿ø´ëÇб³ ´ëÇпø Áö¿ª±â¹Ý°øÇаú;°­¿ø´ëÇб³ ´ëÇпø Áö¿ª±â¹Ý°øÇаú;
 
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º» ³í¹®Àº ¾Æ½ºÆÈÆ® Æ÷ÀåÀÇ ¼Ò¼ºº¯Çü ÀúÇ×¼º ÃßÁ¤À» º¸´Ù ½±°Ô Çϱâ À§ÇÏ¿© »õ·Î¿î ½ÃÇè¹ý ¹× Àåºñ¸¦ °³¹ßÇϱâ À§ÇÑ ¿¬±¸ÀÌ´Ù. º» ¿¬±¸¿¡¼­´Â ´Ù¾çÇÑ Á¾·ùÀÇ ¾Æ½ºÆÈÆ® È¥ÇÕ¹°À» »ç¿ëÇÏ¿© ¼Ò¼ºº¯Çü ÀúÇ×¼º°úÀÇ »ó°ü¼ºÀÌ ³ô°Ô ³ªÅ¸³ª´Â º¯Çü°­µµ¸¦ °³¹ßÇϱâ À§ÇÏ¿© ÇÏÁߺÀÀÇ Á÷°æ(D) 3, 4cm, °¢ ºÀÀÇ ÇÏ´ÜÀ» ´Ù¾çÇÏ°Ô ¿øÇüÀý»è(r)ÇÑ ±è Å×½ºÅ͸¦ °³¹ßÇÏ¿´´Ù. À̸¦ ÀÌ¿ëÇÏ¿© ¸¶¼£½ÃÇè°ú °°ÀÌ °ø½Ãü¸¦ $60^{circ}C$¿¡ ¼öħó¸®ÇÏ°í °°Àº ¼ÓµµÀÇ Á¤ÇÏÁßÀ» °ø½Ãü¿¡ ´ÙÁü¹æÇâÀ¸·Î °¡ÇÏ¿© ÃÖ´ëÇÏÁß ($P_{max}$)°ú À̶§ÀÇ ¼öÁ÷ º¯À§ (y)¸¦ ±¸ÇÏ¿´´Ù. º¯Çü°­µµ´Â °³¹ßµÈ ½Ä $K_D = 4P_{max}/{pi}(D-2(r-sqrt{2ry-y^2}))^2$À¸·Î ±¸ÇÏ¿´À¸¸ç ¼Ò¼ºº¯Çü Ư¼ºÄ¡¿Í Æò±Õ $R^2$ÀÌ 0.77ÀÌ»óÀÇ ³ôÀº »ó°ü¼ºÀ» º¸¿´´Ù. µû¶ó¼­ ÀÌ ½ÃÇè¹æ¹ýÀº ¸¶¼£¾ÈÁ¤µµº¸´Ù ÈξÀ ¼Ò¼ºº¯Çü°úÀÇ »ó°ü°ü°è°¡ Å« ÃøÁ¤Ä¡¸¦ ¾òÀ» ¼ö ÀÖ´Â ¹æ¹ýÀÓÀ» ¾Ë ¼ö ÀÖ¾úÀ¸¸ç, ƯÈ÷ ±âÁ¸ÀÇ ¸¶¼£½ÃÇè±â¸¦ ±×´ë·Î »ç¿ëÇÏ°í °ø½Ãüµµ ±âÁ¸ÀÇ ¹æ¹ý´ë·Î Á¦Á¶ ¹× ó¸®Çϵµ·Ï ÇÏ¿© Àû¿ëÀÌ ºü¸¦ °ÍÀ¸·Î ÆÇ´ÜµÈ´Ù. ÇâÈÄ ´Ù¾çÇÑ °ñÀçÀÔµµ, ÃÖ´ëÄ¡¼ö, r µî¿¡¼­µµ Ÿ´ç¼º°ú »ó°ü¼º °ËÁõÀ» ÅëÇØ ½ÃÇè¹ýÀ» Ç¥ÁØÈ­ÇÑ´Ù¸é ½Ç¿ëÈ­ °¡´É¼ºÀÌ ¸Å¿ì Ŭ °ÍÀÌ´Ù.
This study dealt with developing a new approach for finding properties which might represent rut resistance characteristics of asphalt mixture under static loading. Two aggregates, a normal asphalt (pen 60-80) and 5 polymer-modified asphalts were used in preparation of 12 dense-graded mixtures. Marshall mix design was used in determination of OAC and each mixture at the OAC was prepared for a newly-developed Kim test on Marshall specimen (S=10cm) and gyratory specimen (S=15cm), and for wheel tracking test. Kim test used Marshall loading frame and specimens were conditioned for 30min at $60^{circ}C$ before loading through Kim tester an apparatus consisting of a loading column and a specimen and column holder Diameter (D) of column was 3cm and 4cm with each column having different radius (r) of round cut at the bottom. The static load was applied at 50mm/min in axial direction of the specimen, not in diametral direction. The maximum load ($P_{max}$) and vertical deformation (y) at $P_{max}$ point were obtained from the test. A strength value was calculated based on the $P_{max}$ r, D and y by using the equation $K_D = 4P_{max}/{pi}(D-2(r-sqrt{2ry-y^2}))^2$ and is defined as the deformation strength ($kgf/cm^2$). The values of $P_{max}$/y and $K_I=K_D/y$ were also calculated. In general the leading column diameter and radius of round cut were significant factors affecting $K_D$ and $P_{max}$ values while specimen diameter was not. The statistical analyses showed the $K_D$ had the best correlation with rut depth and dynamic stability. The next best correlation was found from $P_{max}$ which was followed by $P_{max}$/y and $K_I$ in order.
 
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º¯Çü°­µµ;¼Ò¼ºº¯Çü ÀúÇ×¼º;ÇÏÁߺÀ;ÃÖ´ëÇÏÁß;deformation strength;rut resistance;loading column;maximum load;
 
Çѱ¹µµ·ÎÇÐȸ³í¹®Áý / v.4, no.4, 2002³â, pp.23-39
Çѱ¹µµ·ÎÇÐȸ
ISSN : 1738-7159
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200215637527318)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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