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Çѱ¹µµ·ÎÇÐȸ / v.7, no.1, 2005³â, pp.11-20
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Àç»ýÈ¥ÇÕ¹°ÀÇ ¹ÙÀδõ GPCƯ¼º°ú ¿ªÇÐÀû Ư¼º°úÀÇ »ó°ü¼º ¿¬±¸
( Correlation of Binder GPC Characteristics and Mechanical Properties of Hot-Mix Recycled Asphalt Mixtures ) |
| ±è±¤¿ì;È«»ó±â;Á¶¹®Áø;µµ¿µ¼ö; °¿ø´ëÇб³ Áö¿ª±â¹Ý°øÇаú;°¿øµµ ¾ç±¸±ºÃ»;°¿ø´ëÇб³ ´ëÇпø;°¿ø´ëÇб³ ¼®À纹ÇսżÒÀ翬±¸¼¾ÅÍ;
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| º» ¿¬±¸´Â ÀçȰ¿ë ¾Æ½ºÆÈÆ® È¥ÇÕ¹°ÀÇ ¿ªÇÐÀû Ư¼º°ú Àç»ýÈ¥ÇÕ¹° ³» ¹ÙÀδõÀÇ ´ëÇüºÐÀÚ(Large molecular size : LMS)¿ÍÀÇ »ó°ü¼ºÀ» Á¶»çÇÏ¿´´Ù. Àç»ý È¥ÇÕ¹°Àº ¿©·¯ °¡Áö È¥ÇÕ ¹æ¹ýÀ¸·Î Á¦ÀÛÇÏ¿© ¿ªÇÐÀû °µµ ½ÃÇèÀ» ¼öÇàÇÏ¿´°í Àç»ýÈ¥ÇÕ¹° ³»ÀÇ RAP ±½Àº°ñÀç(R), ¸ÅÆ®¸¯½º(M) ¹× ½Å±Ô ±½Àº°ñÀç(V) ½Ã·á¿¡ ÄÚÆÃµÈ ¹ÙÀδõÀÇ ³ëÈ »óŸ¦ gel-permeation chromatography(GPC)¸¦ ÅëÇØ Á¶»çÇÏ¿´´Ù. Àç»ýÈ¥ÇÕ¹° ³» ¹ÙÀδõÀÇ ³ëÈ»óÅ ºÐ¼®À» À§ÇÑ È¥ÇÕ¹° Á¦Á¶¿¡´Â ¿øÇü°ñÀç (13mm °ÀÚ°¥)°¡ ±½Àº°ñÀç·Î »ç¿ëµÇ¾ú´Ù. GPC¸¦ ÅëÇÑ Àç»ýÈ¥ÇÕ¹° ³» ¹ÙÀδõÀÇ ³ëÈ»óŸ¦ ºÐ¼®ÇÑ °á°ú ½Å ±¸ ¹ÙÀδõÀÇ ³ëÈ Á¤µµ¿¡ Â÷À̸¦ È®ÀÎÇßÀ¸¸ç, È¥ÇÕ ¹æ¹ý¿¡ µû¶ó Àç»ýÈ¥ÇÕ¹°ÀÇ ¹ÙÀδõ ³ëÈ »óŰ¡ ¼·Î »óÀÌÇÔÀ» È®ÀÎÇÏ¿´´Ù. ¿ªÇÐÀû °µµ Ư¼º°ú R, M, V½Ã·áÀÇ LMS¿¡ ´ëÇÑ »ó°ü¼ººÐ¼®°á°ú Àç»ýÈ¥ÇÕ¹°ÀÇ ¿ªÇÐÀû Ư¼ºÀÌ È¥ÇÕ¹° ³»ÀÇ Àç·á Áß ¾î´À ƯÁ¤ Àç·áÀÇ ¹ÙÀδõ LMS¿Í ´õ ¹ÐÁ¢ÇÑ »ó°ü°ü°è¸¦ º¸¿´´Ù. ¶ÇÇÑ LMS°¡ ¾î´À Á¤µµ Áõ°¡µÉ ¶§±îÁö´Â °µµÆ¯¼ºÀÌ Çâ»óµÇ³ª LMS°¡ º¸´Ù ´õ Ä¿Áö¸é °µµ¼º´ÉÀÌ ÀúÇϵǴ °æÇâÀ» º¸¿© È¥ÇÕ¹° Á¦Á¶½Ã Á¦´ë·Î ȸº¹µÇÁö ¸øÇÑ ³ëÈµÈ ¾Æ½ºÆÈÆ®°¡ ÇâÈÄ ³ëȰ¡ ´õ¿í ÁøÇàµÇ¸é Àç»ýÈ¥ÇÕ¹°ÀÇ °µµ ¼º´ÉÀÌ ÀúÇ쵃 °ÍÀ¸·Î ÆÇ´ÜµÇ¾ú´Ù. |
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| This study examined the correlation between mechanical properties and LMS(Large molecular size) of binders in hot-recycled asphalt mixtures. Hot-recycled asphalt mixtures were manufactured by various mixing methods. Laboratory tests including indirect tensile strength, wheel tracking test and Kim test were performed for each recycled mixture. Gel-permeation chromatography (GPC) analysis was performed for the binders coated on virgin and old (RAP) aggregates separately. For the purpose of binder aging analysis, a round-shaped virgin coarse aggregates (13mm gravel) were introduced in recycled mixtures. This makes possible to distinguish the virgin aggregates from RAP aggregates in recycled mixtures for GPC sampling. Results of GPC showed that there was significant difference in aging level between the binder coated on RAP and that of virgin aggregates in the same recycled mixture. Regression analysis was performed to correlate mechanical properties to LMS ratio. Results showed that most of the mechanical properties had relatively good correlation with LMS. This trend agree with LMS increase up to some degree, but fails for further LMS increase. |
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| °¡¿ ÀçȰ¿ë ¾Æ½ºÆÈÆ® È¥ÇÕ¹°;³ëÈ;´ëÇüºÐÀÚ;»ó°ü¼ººÐ¼®;hot-recycled asphalt mixture;aging;GPC;RAP;LMS;correlation analysis; |
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Çѱ¹µµ·ÎÇÐȸ³í¹®Áý / v.7, no.1, 2005³â, pp.11-20
Çѱ¹µµ·ÎÇÐȸ
ISSN : 1738-7159
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200515637508831)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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