|
|
|
Çѱ¹µµ·ÎÇÐȸ / v.7, no.1, 2005³â, pp.49-61
|
ÀüÀÌÇÔ¼ö °áÁ¤¹ý¿¡ µû¸¥ ¾Æ½ºÆÈÆ® È¥ÇÕ¹°ÀÇ µ¿Åº¼º°è¼ö ºñ±³Æò°¡
( Comparison and Evaluation of Dynamic Modulus of Hot Mix Asphalt with Different Shift Factors ) |
| ±èÇö¿À;À̰üÈ£; °æ¼º´ëÇб³ °Ç¼³È¯°æ°øÇкÎ;°æ¼º´ëÇб³ °Ç¼³È¯°æ°øÇкÎ;
|
|
|
 |
|
| |
| ÃÊ ·Ï |
| ¾Æ½ºÆÈÆ® È¥ÇÕ¹°ÀÇ µ¿Åº¼º°è¼ö´Â ½ÃÇè¿Âµµ ÇÏÁßÁ֯ļöÀÇ Á¶ÇÕ¿¡ µû¶ó °¢°¢ÀÇ µ¿Åº¼º°è¼ö°ªÀ» Æò°¡ÇÑ´Ù. ½ÇÇè¿¡¼ ¾ò¾îÁø °¢°¢ÀÇ µ¿Åº¼º°è¼ö¸¦ ÇÏÁ߽ð£°ú ¿ÂµµÁßø¿ø¸®¸¦ ÀÌ¿ëÇÏ¿© ¸¶½ºÅͰ(Master Curve)À» °áÁ¤ÇÑ´Ù. º» ¿¬±¸ÀÇ ÁÖ¸ñÀûÀº ¸¶½ºÅͰÀ» ¸¸µé±â À§ÇØ ÇÊ¿äÇÑ 3°³ÀÇ ´Ù¸¥ ÀüÀÌÇÔ¼ö(Shift Factor)¿¡ -Áï, Arrhenius, 2002 AASHTO Guide, Experimental method- µû¸¥ ¸¶½ºÅͰÀÇ º¯ÈÁ¤µµ¸¦ Æò°¡ÇÏ´Â °ÍÀÌ´Ù. Æò°¡¸¦ À§ÇØ »ç¿ëµÈ °ñÀç´Â Ȱ¾ÏÀ̰í, ¾Æ½ºÆÈÆ®(AP-3 ¹× AP-5)¸¦ ÀÌ¿ëÇÏ¿© Ç¥Ãþ¿ë ¹× ±âÃþ¿ë ¾Æ½ºÆÈÆ® È¥ÇÕ¹°ÀÇ µ¿Åº¼º°è¼ö¸¦ Æò°¡ÇÏ¿´´Ù. ¹èÇÕ¼³°è´Â Superpave Level 1 ±âÁØÀ» ÁØ¿ëÇÏ¿´°í, ´ÙÁüÀº ¼±È¸´ÙÁü±â¸¦ ÀÌ¿ëÇÏ¿´´Ù. UTM½ÃÇè±â¸¦ ÀÌ¿ëÇÑ µ¿Åº¼º°è¼ö ½ÃÇèÀº 5°³ÀÇ ¿Âµµ(-10, 5, 20, 40, 55µµ) ¹× 5°³ÀÇ ÇÏÁßÁ֯ļö(0.05, 0.1, 1, 10, 25 Hz)¸¦ ÀÌ¿ëÇÏ¿´°í, °¢°¢ÀÇ ¾Æ½ºÆÈÆ® È¥ÇÕ¹°ÀÇ À§»ó°¢ ¹× µ¿Åº¼º°è¼ö¸¦ Æò°¡ÇÏ¿´´Ù. ÃøÁ¤µÈ °ªÀ» ÀÌ¿ëÇÏ¿© Sigmoidal Function¹æÁ¤½ÄÀ» ¸¸Á·ÇÏ´Â ÀԷº¯¼ö¸¦ °áÁ¤Çϱâ À§ÇØ ÀüÀÌÇÔ¼ö ¹× Ȱ¼º¿¡³ÊÁö (activation energy)¸¦ °áÁ¤ÇÏ¿´´Ù. |
|
| The dynamic modulus of hot mix asphalt can be determined according to the different combinations of testing temperature and loading frequency. The superposition rule is adapted to get the master curve of dynamic modulus for each hot mix asphalt. There are couple of different methods to get the shift factor which is a key for making the master curve. In this paper, Arrehnius, 2002 AASHTO, and experimental method was employed to get the master curve. Evaluation of dynamic modulus for 25mm base course of hot mix asphalt with granite aggregate and two asphalt binders(AP-3 and AP-5) was carried out. Superpave Level 1 Mix Design with gyratory compactor was adopted to determine the optimum asphalt binder content(OAC) and the measured ranges of OAC were between 4.1% and 4.4%. UTM was used for laboratory test. The dynamic modulus and phase angle were determined by testing on UTM, with 5 different testing temperature(-10, 5, 20, 40, & $55^{circ}C$) and 5 different loading frequencies(0.05, 0.1, 1, 10, 25 Hz). Using the measured dynamic modulus and phase angle, the input parameters of Sigmoidal function equation to represent the master curve were determined and these will be adopted in FEM analysis for asphalt pavements. The shift factor and activation energy for determination of master curve were calculated. |
| |
| Ű¿öµå |
| µ¿Åº¼º°è¼ö;Ȱ¾Ï;¸¶½ºÅͰ;¼±È¸´ÙÁü±â;dynamic modulus;master curve;shift factor;gyratory compactor; |
| |
|
|
 |
|
Çѱ¹µµ·ÎÇÐȸ³í¹®Áý / v.7, no.1, 2005³â, pp.49-61
Çѱ¹µµ·ÎÇÐȸ
ISSN : 1738-7159
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200515637508911)
¾ð¾î : Çѱ¹¾î |
|
| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
|
|
|
|
|
|