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Çѱ¹µµ·ÎÇÐȸ / v.12, no.4, 2010³â, pp.101-110
³ëÈÄ ÁÙ´« ÄÜÅ©¸®Æ® Æ÷Àå º¸¼ö¸¦ À§ÇÑ ¾ãÀº ¿¬¼Ó ö±Ù ÄÜÅ©¸®Æ® µ¡¾º¿ì±â Æ÷ÀåÀÇ °Åµ¿ Æò°¡(2)
( Behavior Evaluation of Thin Bonded Continuously Reinforced Concrete Overlay on Aged Jointed Concrete Pavement(2) )
·ù¼º¿ì;Á¶À±È£; Áß¾Ó´ëÇб³ °Ç¼³È¯°æ°øÇаú;Áß¾Ó´ëÇб³ °Ç¼³È¯°æ°øÇаú;
 
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º» ¿¬±¸¿¡¼­´Â ³ëÈÄ ÄÜÅ©¸®Æ® Æ÷ÀåÀÇ È¿À²Àû À¯Áöº¸¼ö¸¦ À§ÇÏ¿© ±¹³» ÃÖÃÊ Àû¿ëµÈ ¿¬¼Óö±Ù ÄÜÅ©¸®Æ® °³³äÀÇ ¾ãÀº µ¡¾º¿ì±â °ø¹ý(CRCO : Thin Bonded Continuously Reinforced Concrete Overlay)ÀÇ °Åµ¿ Ư¼ºÀ» »ìÆìº¸¾Ò´Ù. ¼­ÇØ¾È °í¼Óµµ·ÎÀÇ Æóµµ ±¸°£¿¡ CRCO °ø¹ý°ú JCO °ø¹ý(Jointed Concrete Overlay)À» ½ÃÇè½Ã°ø ÇÏ¿´À¸¸ç, CRCO °ø¹ý¿¡ »ðÀÔµÈ Á¾¹æÇâ ö±ÙÀ¸·Î È¿°ú¸¦ °ËÅäÇÏ¿´´Ù. ½ÃÇè½Ã°ø ÈÄ ±Õ¿­ Á¶»ç °á°ú, CRCO ±¸°£ÀÇ ±âÁ¸ ÁÙ´«ºÎ¿¡¼­ºÎÅÍ ¹Ý»ç ±Õ¿­ÀÌ ¹ß»ýÇÏ¿´À¸³ª ±× ÆøÀº ¸Å¿ì Á¼¾Ò´Ù. ö±ÙÀÇ ±¸¼Ó¿ªÇÒ·Î ÀÎÇØ CRCO °ø¹ý¿¡¼­ ´õ ¸¹Àº ±Õ¿­ÀÌ ¹ß»ýÇÏ¿´À¸¸ç, ±× °£°ÝÀº CRCP º¸´Ù ´õ Á¼¾Ò´Ù. ºÎÂø°­µµ ÃøÁ¤ °á°ú, Ç¥¸é 󸮷ΠCold Milling ÈÄ À̹°ÁúÀ» Á¦°ÅÇÏ¿© Ãʱ⿡ Ãþ°£ ºÎÂø ¹®Á¦°¡ ¹ß»ýÇÏÁö ¾Ê¾Ò´Ù. ±âÁ¸ JCPÀÇ ÁÙ´«ºÎ¿¡ ¼öÆòÀ¸·Î ¸Å¼³ÇÑ °èÃø±â µ¥ÀÌÅͺм® °á°ú, Ãʱ⠱տ­ ÅÍÁü ½Ã ÀÏÁ¤ Æø ÀÌ»óÀ¸·Î ¹ú¾îÁöÁö ¸øÇÏ°Ô Á¾¹æÇâ ö±ÙÀÌ Àâ¾ÆÁÖ´Â ¿ªÇÒÀ» ÇÏ¿´À¸¸ç, ¿Âµµº¯È­¿¡ ´ëÇÑ ¼öÆò º¯À§ ¹ß»ý ¾ïÁ¦ È¿°úµµ ÀÖ¾ú´Ù. ÇÏÁö¸¸ Ãþ°£ ºÎÂø ¹®Á¦°¡ ¹ß»ýÇÒ °æ¿ì, ö±ÙÀÇ ±¸¼Ó È¿°ú´Â Àú°¨µÇ¾ú´Ù. ¼öÁ÷ °èÃø±âÀÇ µ¥ÀÌÅ͸¦ ÅëÇØ¼­ ö±ÙÀÌ ¾ø´Â JCO °ø¹ý¿¡ ºñÇØ CRCO °ø¹ýÀº Á¾¹æÇâ ö±Ù À§Ä¡¿¡¼­ Ãþ°£ ºÎÂø ¹®Á¦°¡ ¹ß»ýÇÏÁö ¾Ê¾ÒÀ¸¸ç, ÇöÀå Äھ ÀÛ¾÷À» ÅëÇØ À̸¦ È®ÀÎÇÏ¿´´Ù. ½½·¡ºê ³»ÀÇ ¼öÆò °Åµ¿À» ºÐ¼®ÇÑ °á°ú, Ãʱ⿡ ö±ÙÀÇ ±¸¼ÓÀ¸·Î ÀÎÇØ CRCO °ø¹ý¿¡¼­´Â ÀÎÀå º¯Çü·üÀÌ, ±¸¼ÓÀÌ ¹Ì¹ÌÇÑ JCO °ø¹ýÀº ¾ÐÃà·ÂÀÌ ¹ß»ýÇÏ¿´´Ù. FWD µ¥ÀÌÅÍ ºÐ¼® °á°ú, CRCO °ø¹ýÀÇ Ã³Áü·®ÀÌ JCO º¸´Ù ´õ Àû°Ô ¹ß»ýÇÏ¿´À¸¸ç, ÁöÁö·Â Æò°¡¿¡¼­´Â Àü¹ÝÀûÀ¸·Î µ¡¾º¿ì±â Èİ¡ ´õ Å©°Ô ³ªÅ¸³µÀ¸¸ç, ƯÈ÷ CRCO °ø¹ýÀÌ JCO °ø¹ý¿¡ ºñÇØ ÁöÁö·Â¿¡ ´ëÇÑ µ¡¾º¿ì±â µÎ²² È¿°ú°¡ ´õ ÄÇ´Ù.
In this paper, it has been studied about the CRCO to maintain or rehabilitate the aged JCP. The CRCO and JCO was constructed at useless section of Seo-Hae-Ahn express highway in South Korea. The performance evaluation was conducted. Especially, it was focused on the roll of longitudinal reinforced steels inserted into the CRCO. On crack survey results from field construction section, the reflection cracks at joint of the existing pavement occurred in CRCO. However, due to the constraints of longitudinal reinforced steels, crack width was small. Total crack length and quantity in the CRCO more than that in the JCO. And crack spacing in the CRCO was narrower than it in the CRCP. Through the bonding strength test results, if the cold milling and cleaning as well as surface treatment is applied, there will be no debonding problem at interlayer in the early age. From analysis of the horizontal behavior at the joint, the longitudinal reinforced steels constrained crack width which became wider than initial state over time. Also, that steel in the CRCO reduced the horizontal movement due to temperature variation(4 times than that in the JCO). But, if interface is debonded, the roll decreased. Vertical VWG data showed that CRCO did not occur debonding problem at steel location, but there was some problem in JCO. It was confirmed by field coring. The tensile strain appeared in the CRCO, But the compressive strain occurred in the JCO in early age. Through the FWD test result, deflection in the CRCO was less than that in the JCO. And K value in the CRCO was greater than it in the JCO.
 
Ű¿öµå
À¯Áöº¸¼ö;CRCO °ø¹ý;JCO °ø¹ý;ÄÜÅ©¸®Æ® µ¡¾º¿ì±â;maintenance and rehabilitation;thin bonded concrete overlay;jointed concrete overlay(JCO);concrete overlay;FWD;
 
Çѱ¹µµ·ÎÇÐȸ³í¹®Áý / v.12, no.4, 2010³â, pp.101-110
Çѱ¹µµ·ÎÇÐȸ
ISSN : 1738-7159
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO201014654457733)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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