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Çѱ¹µµ·ÎÇÐȸ / v.4, no.4, 2002³â, pp.41-52
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( Analysis of Apparatus Variables for Deformation Strength Test of Asphalt Concrete Based on Correlation with Rutting and Prediction Model for Rutting )
±è±¤¿ì;À̹®¼·;±è¼ºÅÂ;À̼øÁ¦; °­¿ø´ëÇб³ ³ó¾÷°øÇкÎ;°­¿ø´ëÇб³ ´ëÇпø Áö¿ª±â¹Ý°øÇаú;°­¿ø´ëÇб³ ´ëÇпø Áö¿ª±â¹Ý°øÇаú;°­¿ø´ëÇб³ ¼®Àç½Å¼ÒÀç¼¾ÅÍ;
 
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º» ¿¬±¸´Â ¾Æ½ºÆÈÆ® ÄÜÅ©¸®Æ® Æ÷ÀåÀÇ ¼Ò¼ºº¯Çü ÃßÁ¤À» º¸´Ù ½±°Ô Çϱâ À§ÇÏ¿© »õ·Î¿î ½ÃÇè±â¹ýÀÎ ±èÅ×½ºÆ®ÀÇ º¯Çü°­µµ ¹× ½ÃÇè Àåºñ¸¦ °³¹ßÇÔ¿¡ ÀÖ¾î ÀûÁ¤±Ô°ÝÀ» ¼±Á¤Çϱâ À§ÇÑ °ÍÀ̳ª. ±èÅ×½ºÆ®¿¡¼­ ÇÏÁߺÀÀÇ Á÷°æ(D) ¹× ÇÏÁߺÀ ÇÏ´ÜÀÇ ¿øÇüó¸® ¹Ý°æ(r)ÀÌ ½ÃÇè°á°ú¿¡ ¹ÌÄ¡´Â ¿µÇâÀ» ÆÄ¾ÇÇϱâ À§ÇÏ¿© ´Ù¾çÇÑ È¥ÇÕ¹°¿¡ ´ëÇÏ¿© D¿Í rÀ» º¯È­½ÃÄѰ¡¸ç ½ÇÇèÀ» ¼öÇàÇÏ¿´´Ù. r¿¡ µû¸¥ º¯Çü°­µµ ¹× º¯ÇüÇÏÁß°úÀÇ »ó°ü°ü°è ºÐ¼®°á°ú r=0.5¿Í 1.0cm·Î ¿øÇü ó¸®ÇÑ ÃøÁ¤°ª¿¡¼­ ¼Ò¼ºº¯Çü°ú ³ôÀº »ó°ü¼ºÀ» º¸¿©ÁÖ¾ú´Ù. °ø½ÃüÀÇ Á÷°æ(S)Àº Áß¿ä º¯ÀÎÀÌ ¾Æ´Ï¾úÀ¸¸ç, ÇÏÁߺÀÀº Á÷°æ 4cm¿¡ ¹Ýµå½Ã ÇÏ´ÜÀ» ¿øÇü󸮸¦ ÇØ¾ßÇϰí À̶§ÀÇ Àý»è ¹Ý°æ rÀº 1.0cm°¡ °¡Àå ÁÁÀº °ÍÀ¸·Î ³ªÅ¸³µ´Ù. Åë°èÇÁ·Î±×·¥ SASÀÇ STEPWISE ¸¦ ÀÌ¿ëÇÏ¿© °ñÀ纰·Î º¯Çü°­µµ·ÎºÎÅÍ ¼Ò¼ºº¯Çü ±íÀÌ ¹× µ¿Àû ¾ÈÁ¤µµ¸¦ ÃßÁ¤Çϱâ À§ÇØ ¸ðµ¨À» °³¹ßÇÏ¿´À¸¸ç $R^2$Àº 0.95ÀÌ»óÀÌ ¾ò¾îÁ³´Ù. ÇâÈÄ º¸´Ù ¸¹Àº ½ÇÇèÀ» ÅëÇØ ÀÌ ½ÃÇè¹ýÀÇ Ç¥ÁØÈ­ ¿¬±¸°¡ Áö¼ÓÀûÀ¸·Î ÀÌ·ç¾îÁ®¾ß ÇÒ °ÍÀ̸ç, »õ·Î¿î ¹èÇÕ¼³°è ¹æ¹ýÀ» °³¹ßÇÑ´Ù¸é º» ½ÇÇè¹ýÀÇ Àû¿ëÀ» °ËÅäÇØ º¼ Çʿ䰡 ÀÖÀ» °ÍÀÌ´Ù.
This study dealt with analysis of size effect of testing apparatus for Kim test which measures rut resistance characteristics of asphalt mixture under static loading. Two columns in different diameter with each column having different radios of round cut (Curvature) at the bottom were used for testing asphalt mixture. Deformation load ($P_{max}$) and deformation strength ($K_D$) were found to have relatively high correlation with rut depth and dynamic stability of asphalt concrete. Diameter of specimen was not a significant factor in this test. From the statistical correlation analysis with rutting properties, the radius of curvature and diameter of loading column were found to be important factor affecting the results of the test. Among the radios (r) of curvatures, r=0.5cm and 1.0cm showed much higher correlation than the column without curvature, and r=1.0cm being better between the two. The column with diameter of 4cm showed better correlation than diameter of 3cm. Therefore, the column of 4cm diameter with r=1.0cm was found to be the best among various apparatus sizes. Prediction models for rut depth and dynamic stability were developed for each aggregate mixture based on Kim test variables using SAS STEPWISE procedure. Therefore, if this test method is validated through further study, Kim test can be used for selecting asphalt mixture with the highest resistance against permanent deformation.
 
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±èÅ×½ºÆ®;º¯Çü°­µµ;¿øÇüó¸® ¹Ý°æ;±âµÕÁ÷°æ;Kim test;deformation strength;radius of curvature;diameter of loading column;
 
Çѱ¹µµ·ÎÇÐȸ³í¹®Áý / v.4, no.4, 2002³â, pp.41-52
Çѱ¹µµ·ÎÇÐȸ
ISSN : 1738-7159
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200215637527356)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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