¶óÆæÆ®¦¢Ä«Æä¦¢ºí·Î±×¦¢´õº¸±â
¾ÆÄ«µ¥¹Ì Ȩ ¸í»çƯ°­ ´ëÇבּ¸½Ç޹æ Á¶°æ½Ç¹« µ¿¿µ»ó°­ÀÇ Çѱ¹ÀÇ ÀüÅëÁ¤¿ø ÇÐȸº° ³í¹®
ÇÐȸº° ³í¹®

Çѱ¹°Ç¼³°ü¸®ÇÐȸ
Çѱ¹°ÇÃà½Ã°øÇÐȸ
Çѱ¹µµ·ÎÇÐȸ
Çѱ¹»ý¹°È¯°æÁ¶ÀýÇÐȸ
Çѱ¹»ýÅÂÇÐȸ
Çѱ¹¼öÀÚ¿øÇÐȸ
Çѱ¹½Ä¹°ÇÐȸ
Çѱ¹½Ç³»µðÀÚÀÎÇÐȸ
Çѱ¹ÀÚ¿ø½Ä¹°ÇÐȸ
Çѱ¹ÀܵðÇÐȸ
Çѱ¹Á¶°æÇÐȸ
Çѱ¹Áö¹Ý°øÇÐȸ
Çѱ¹ÇÏõȣ¼öÇÐȸ
Çѱ¹È¯°æ»ý¹°ÇÐȸ
Çѱ¹È¯°æ»ýÅÂÇÐȸ

Çѱ¹Áö¹Ý°øÇÐȸ / v.19, no.4, 2003³â, pp.191-200
¸»¶Ò ºÎ¸¶Âû·Â Àú°¨¿ë ¿ªÃ»Àç·áÀÇ À¯º¯ÇÐÀû Ư¼º
( Rheological Properties of Bitumen for Reducing Negative Skin Friction )
¹Úżø;À±¼öÁø; ¼­¿ï»ê¾÷´ëÇб³ Åä¸ñ°øÇаú;¼­¿ï»ê¾÷´ëÇб³ ´ëÇпø;
 
ÃÊ ·Ï
º» ¿¬±¸´Â ¸»¶Ò ºÎ¸¶Âû·Â Àú°¨¿ëÀ¸·Î »ç¿ëÇÏ´Â ¿ªÃ»Àç·áÀÇ À¯º¯ÇÐÀû Ư¼ºÀ» ºÐ¼®ÇÑ °á°úÀÌ´Ù. ¿ªÃ»Àç·á´Â È¿°úÀûÀ¸·Î ºÎ¸¶Âû·ÂÀ» Àú°¨½ÃŰ°í °æÁ¦ÀûÀÎ ÀåÁ¡À¸·Î ÀÎÇÏ¿© ¸»¶ÒÀÇ ºÎ¸¶Âû·Â Àú°¨ °ø¹ýÀ¸·Î »ç¿ëÇÏ¿© ¿Ô´Ù. º» ¿¬±¸¿¡¼­´Â ¼¼ Á¾·ùÀÇ ¸»¶Ò¿ë ¿ªÃ»Àç·á¸¦ ¼±ÅÃÇÏ¿© ºñ±³ ½ÃÇèÀ» ½Ç½ÃÇÏ¿´´Ù. ¹°¸®Àû Ư¼º½ÃÇèÀ¸·Î´Â ħÀÔµµ ½ÃÇè, ¿¬È­Á¡ ½ÃÇè ¹× Ä§ÀÔµµ Áö¼ö¸¦ ½Ç½ÃÇÏ¿´À¸¸ç À¯º¯ÇÐÀû ½ÃÇèÀ¸·Î´Â µ¿ÀûÀü´Ü À¯µ¿±â¸¦ »ç¿ëÇÏ¿© À§»ó°¢, º¹ÇÕ°è¼ö, Å©¸®ÇÁ½ÃÇè ¹× È帧½ÃÇèÀ» ½ÃÇè¿Âµµ 15, 30, 45 ¹× 6$0^{circ}C$¿¡¼­ ¼öÇàÇÏ¿´´Ù. ½ÃÇè °á°ú´Â ¿ªÃ»Àç·áÀÇ À¯º¯ÇÐÀû Ư¼ºÀ» ³ªÅ¸³»´Â À§»ó°¢, G$^*$/sin $delta$, Å©¸®ÇÁ ÄÄÇöóÀ̾𽺠¹× Àü´ÜÁ¡µµ·Î ºÐ¼®ÇÏ¿© »óÈ£ ºñ±³ÇÏ¿´´Ù. ½ÃÇè °á°ú ¿Âµµ¿Í À§»ó°¢Àº ºñ·Ê°ü°è¸¦ ³ªÅ¸³ÂÀ¸¸ç G$^*$/sin $delta$´Â ¹Ýºñ·Ê °ü°è¸¦ º¸¿´´Ù. ¶ÇÇÑ, Å©¸®ÇÁ ÄÄÇöóÀ̾𽺴 ÇÏÁ߽ð£ÀÌ Áõ°¡ÇÔ¿¡ µû¶ó Áõ°¡ÇÏ¿© ¿ªÃ»Àç·á°¡ ½Ã°£ÀÇ º¯È­¿¡ µû¶ó Á¡¼ºÀ¯Ã¼·Î ÀÛ¿ëÇÏ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù. Å©¸®ÇÁ½ÃÇèÀ¸·Î ÀÎÇÑ ½Ã°£ ¹× ¿ÂµµÀÇ º¯È­´Â Å©¸®ÇÁ ÄÄÇöóÀ̾𽺠°ªÀ» Å©°Ô º¯È­ ½ÃÄ×À¸³ª Àü´ÜÁ¡µµÀÇ º¯È­´Â ±×´ÙÁö ½ÉÇÏ°Ô ³ªÅ¸³ªÁö ¾Ê¾Æ¼­ ¸»¶Ò ¿ªÃ»Àç·áÀÇ Æò°¡¿¡´Â Å©¸®ÇÁ ÄÄÇöóÀ̾𽺸¦ ÃøÁ¤ ÇÒ ¼ö ÀÖ´Â Å©¸®ÇÁ½ÃÇèÀÌ ÀûÀýÇÑ °ÍÀ¸·Î Æò°¡µÇ¾ú´Ù. º» ¿¬±¸¿¡¼­ À¯º¯ÇÐÀû ½ÃÇèÀ» ½Ç½ÃÇÑ °á°ú ¹°¸®Àû ½ÃÇèÀ¸·ÎºÎÅÍ ºÐ¼®ÇÒ ¼ö ¾ø´Â ¿Âµµ¿Í ½Ã°£ÀÇ º¯È­¿¡ µû¸¥ ¿ªÃ»Àç·áÀÇ Æ¯¼ºº¯È­¸¦ »ó¼¼ÇÏ°Ô ºÐ¼®ÇÒ ¼ö ÀÖ¾ú´Âµ¥ ÀÌ·¯ÇÑ ½ÃÇè °á°ú´Â ¸»¶Ò¿ë ¿ªÃ»Àç·áÀÇ ¼±Á¤¿¡ Å« ¿µÇâÀ» ¹ÌÄ¥ °ÍÀ¸·Î ÆÇ´ÜµÈ´Ù. °¡Àå ³ô¾Ò´Ù(P<0.05). 3. ¼öºÐÇÔ·®Àº ¸ã½Ò°¡·ç 33.2%, ¼ÖÀÙ°¡·ç 2.6% ¿´°í 37¡­40% Á¤µµ¶ó¾ß ¹Ù¶÷Á÷ÇÑ ¼Ö¼³±â¶ó°í Æò°¡µÇ¾ú´Ù. 4. »öµµÃøÁ¤ °á°ú L°ª(Lightness)Àº ¸ã½Ò°¡·ç 350g¿¡ ¼ÖÀÙ°¡·ç 3.5g(1%), ²Ü 80ml¸¦ ÷°¡ÇÑ ±º(A01H)ÀÌ °¡Àå ¹à¾ÒÀ¸¸ç, a°ª(Redness)°ú b°ª(Yellowness) Àº ¸ã½Ò°¡·ç 350g¿¡ ¼ÖÀÙ°¡·ç 10.5g(3%), ¼³ÅÁ 60gÀ» ÷°¡ÇÑ ±º(AO3S)ÀÌ °¡Àå ³ô¾Æ red¿Í yellow¿¡ °¡±î¿ü´Ù(p¡´0.05). ÀÌ»óÀÇ ¿¬±¸¸¦ ÅëÇØ ¾òÀº ¼Ö¼³±âÀÇ °¡Àå ¹Ù¶÷Á÷ÇÑ ¹èÇÕºñ´Â ¸ã½Ò°¡·ç 350g¿¡ ¼ÖÀÙ°¡·ç 3.5g, ²Ü 80m1, ¼Ò±Ý 3.5g, ¹° 20m1¸¦ ³Ö°í Âð ¶±À̾úÀ¸¸ç, ¼öºÐÇÔ·®Àº 37.1% ¿´´Ù. ¼ÖÀÙÀº ¾àÀç·Î ¿©·¯ Áúº´ÀÇ Ä¡·á³ª ±¸È²½ÄǬÀ¸·Î ¸¹ÀÌ »ó¿ëÇØ ¿Ô´Âµ¥, ¼ÖÀÙÀ» ¶±¿¡ ÷°¡ÇÏ¿© À½½ÄÀ¸·Î ¼·ÃëÇÒ ¼ö ÀÖ´Â ¼Ö¼³±â¸¦ °³¹ßÇÔÀ¸·Î¼­ ÀÏ»óÀûÀÎ ±â´É¼º À½½ÄÀ¸·Î ¼Ö¼³±â°¡ ³Î¸® º¸±ÞµÇ¾úÀ¸¸é ÇÏ°í ±â´ëÇÑ´Ù.The aim of this work was to study a degumming process using electrolytic water and a possibility of sericin recovery. The new degumming process used electrolytic water operates at $95^circ{C}$ for 2hr. without any reagents. The wastewater of this process are formed by a solution of sericin in water. This conditions suggest the stu
This paper presents the rheological properties of bitumen for reducing negative skin friction. The bitumen has been widely used due to both the cost and construction effectiveness. Also, it is well known that the use of bitumen for reducing negative skin friction renders the best results among other available methods. Three different modified bitumens were used for the testing programs. The physical tests include the penetration, the softening point and penetration index. The rheological tests include phase angle, complex modulus, creep tests and flow tests. The tests were conducted at four different temperatures(15, 30, 45 and 6$0^{circ}C$) in order to simulate the field condition. The test results were analyzed using the phase angle, G$^*$/sin $delta$, creep compliance and shear viscosity. The result of tests showed that the phase angle increased and G$^*$/sin $delta$ decreased with the increase of temperature. The creep compliance increased as the loading time increased. The difference of the creep compliance is detected as the time and temperature are varied, however, the difference of the shear viscosity is not significant among the samples tested in this study. The rheological properties of the bitumen also showed that the physical testing method and the temperature dependant testing method are somewhat limited to showing and expressing the full rheological properties of the modified bitumen. The introduction of the time and the temperature dependent testing method is necessary to find out the full rheological properties of the modified bitumen.
 
Ű¿öµå
Creep compliance;Modified bitumen;Negative skin friction;Rheological property;Shear viscosity;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.19, no.4, 2003³â, pp.191-200
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200311921886566)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
¸ñ·Ïº¸±â
ȸ»ç¼Ò°³ ±¤°í¾È³» ÀÌ¿ë¾à°ü °³ÀÎÁ¤º¸Ãë±Þ¹æÄ§ Ã¥ÀÓÀÇ ÇѰè¿Í ¹ýÀû°íÁö À̸ÞÀÏÁÖ¼Ò ¹«´Ü¼öÁý °ÅºÎ °í°´¼¾ÅÍ
   

ÇÏÀ§¹è³ÊÀ̵¿