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Çѱ¹µµ·ÎÇÐȸ / v.1, no.2, 1999³â, pp.121-133
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±¹³» ½ºÆ®·¹ÀÌÆ® ¾Æ½ºÆÈÆ®ÀÇ °Åµ¿ Ư¼º ¿¬±¸
( A Study on Rheological Behavior of Korean Straight Asphalts ) |
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| º» ³í¹®Àº ±¹³» Á¤À¯»ç¿¡¼ »ý»êµÇ´Â µµ·Î Æ÷Àå¿ë ¾Æ½ºÆÈÆ®¿¡ ´ëÇÏ¿© ³ëÈ¿¡ µû¸¥ °Åµ¿ Ư¼ºÀ» ÆÄ¾ÇÇÏ¿´´Ù. À̸¦ À§ÇØ ±¹³»ÀÇ 5°³ Á¤À¯È¸»ç¿¡ »ý»êµÇ´Â µÎ°¡Áö µî±ÞÀÇ ¾Æ½ºÆÈÆ® Á¦Ç°(ħÀÔµµ 85-100, ħÀÔµµ 60-70)À» Æ÷ÇÔÇÑ ÃÑ 9Á¾¿¡ ´ëÇÏ¿© ³ëÈ ´Ü°èº°(³ëÈ ÀÌÀü, ´Ü±â³ëÈ, Àå±â³ëÈ)·Î ±¹³» ½ºÆ®·¹ÀÌÆ® ¾Æ½ºÆÈÆ®ÀÇ Ä§ÀÔµµ$(25^{circ}C)$, Á¡µµ$(50^{circ}C;135^{circ}C)$, ¿¬ÈÁ¡, ¹× DSR ½ÃÇè$(-20^{circ}Csim30^{circ}C)$À» ¼öÇàÇÏ¿©, ¾Æ½ºÆÈÆ®ÀÇ ¹°¼º º¯È Ư¼ºÀ» °íÂûÇÏ¿´´Ù. ¿¬±¸ °á°ú, ±¹³» ½ºÆ®·¹ÀÌÆ® ¾Æ½ºÆÈÆ®ÀÇ °Åµ¿Àº °í¿Â($60^{circ}C$±Ù¹æ) ¹× »ó¿Â$(10-30^{circ}C)$¹üÀ§¿¡¼ Á¤À¯»ç Á¦Ç°¿¡ µû¶ó »ó´çÇÑ Â÷À̸¦ ³ªÅ¸³»¾úÀ¸¸ç, Àú¿ÂÀÇ °æ¿ì¿¡´Â Á¤À¯»ç Á¦Ç°À̳ª µî±Þ¿¡ °ü°è¾øÀÌ °ÅÀÇ À¯»çÇÑ °Åµ¿À» ³ªÅ¸³»¾ú´Ù. µû¶ó¼ ¾î´À Á¤À¯»çÀÇ ¾Æ½ºÆÈÆ®¸¦ »ç¿ëÇϴ°¡¿¡ µû¶ó, Àú¿Â¿¡¼ÀÇ ¿Âµµ ±Õ¿¿¡ ´ëÇÑ ÀúÇ×¼ºÀº ´Ù¼Ò ºñ½ÁÇÑ ¼öÁØÀÏ °ÍÀ¸·Î ÆÇ´ÜµÇÁö¸¸, ¼Ò¼ºº¯Çü ¹× ÇÇ·Î ±Õ¿¿¡ ´ëÇÑ ÀúÇ×¼ºÀÌ »óÀÌÇÏ°Ô ³ªÅ¸³¯ °ÍÀ¸·Î ÆÇ´ÜµÈ´Ù. |
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| This study was based on the evaluation of 9 asphalts that were produced in five major Korean refineries. The study was concentrated to identify the problems of the current asphalt specification (KS M 2201) and to determine the ranges of visco-elastic asphalt behavior. As a conventional asphalt property. asphalt penetration, ring and ball(R&B) softening point, asphalt viscosity, and flash point of asphalt were measured. Also Dynamic Shear Rheometer (DSR) were used to evaluate visco-elastic properties of asphalts in the $-20^{circ}C$ through $30^{circ}C$ temperature range. These properties before and after the short-term (RTFO) and long-term (PAV) aging were compared and analyzed to achieve the research objectives. The conclusion from this study can be summarized by the followings. The low temperature rheological behavior of all the straight asphalt from five major Korean refineries is similar regardless of asphalt grade. In the mean while, the rheological behavior at high and intermediate temperature of Korean straight asphalt varies depending on asphalt grade. |
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Çѱ¹µµ·ÎÇÐȸ³í¹®Áý / v.1, no.2, 1999³â, pp.121-133
Çѱ¹µµ·ÎÇÐȸ
ISSN : 1738-7159
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199915637532953)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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