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Çѱ¹µµ·ÎÇÐȸ / v.11, no.2, 2009³â, pp.121-132
³ëÈÄ ÁÙ´« ÄÜÅ©¸®Æ® Æ÷Àå º¸¼ö¸¦ À§ÇÑ ¾ãÀº ¿¬¼Ó ö±Ù ÄÜÅ©¸®Æ® µ¡¾º¿ì±â Æ÷ÀåÀÇ Ãʱâ°Åµ¿ Æò°¡
( Early Age Behavior of Thin Bonded Continuously Reinforced Concrete Overlay on Aged Jointed Plain Concrete Pavement )
·ù¼º¿ì;³²Á¤Èñ;±è±âÇå;Á¶À±È£; Áß¾Ó´ëÇб³ °Ç¼³È¯°æ°øÇаú;Çѱ¹°Ç¼³±â¼ú¿¬±¸¿ø;(ÁÖ)»ï¿ì IMC;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 Thin Bonded Continuously Reinforced Concrete Overlay (CRCO) °ø¹ýÀÇ Ãʱ⠰ø¿ë¼ºÀÌ Æò°¡µÇ¾ú´Ù. ¼­ÇØ¾È °í¼Óµµ·ÎÀÇ Ç¥Ãþ ÆÄ¼Õ ±¸°£¿¡ Jointed Plain Concrete Pavement (JPCP) µ¡¾º¿ì±â¿Í CR8O °ø¹ýÀ» ÀÌ¿ëÇÑ º¸¼ö°¡ ÁøÇàµÇ¾ú´Ù. JPCP µ¡¾º¿ì±â °ø¹ýÀÌ Àû¿ëµÈ ±¸°£¿¡¼­´Â ÀÎÁ¢ ½½·¡ºê°¡ ¿ÏÀüÈ÷ ºÐ¸®µÇµµ·Ï µ¡¾º¿öÁø ÃþÀÇ ÁÙ´«À» ¿ÏÀüÈ÷ Ä¿ÆÃÇÏ¿´À¸¸ç, CRCO °ø¹ýÀÌ Àû¿ëµÈ ±¸°£¿¡¼­´Â 0.5% Á¾¹æÇâ ö±Ù°ú À§Ä¡ °íÁ¤¿ë Ⱦ¹æÇâ ö±ÙÀ» ¼³Ä¡ÇÑ ÈÄ ±× À§¿¡ µ¡¾º¿ì±â¸¦ ¼öÇàÇÏ¿´´Ù. µÎ ±¸°£ ¸ðµÎ¿¡¼­ 3Á¾½Ã¸àÆ®°¡ ÀÌ¿ëµÇ¾ú´Ù. ÇöÀå °­µµ ½ÃÇè °á°ú, 1$sim$3ÀÏ ³»¿¡ ±³Åë°³¹æÀÌ °¡´ÉÇѰ­µµ°¡ ¹ßÇöµÈ °ÍÀÌ È®ÀεǾúÀ¸¸ç, vibrating wire gauge (VWG) µ¥ÀÌÅÍ ºÐ¼® °á°ú CRCO °ø¹ýÀÌ ±âÁ¸ Æ÷ÀåÀÇ ÁÙ´« °Åµ¿À» ¾ïÁ¦ÇÏ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ºÎÂø°­µµ ½ÃÇè°á°ú, Àç·É¿¡ »ó°ü¾øÀÌ ³ôÀº ºÎÂø°­µµ°¡ È®ÀεǾú´Ù. ÇÑÆí JPCP µ¡¾º¿ì±â °ø¹ýÀÌ Àû¿ëµÈ ±¸°£¿¡¼­´Â Á߾Ӻο¡¼­, CRCO °ø¹ýÀÌ Àû¿ëµÈ ±¸°£¿¡¼­´Â CRCO Æ÷Àå°ú °°Àº ¹«ÀÛÀ§ Ⱦ¹æÇâ ±Õ¿­ÀÌ °üÂûµÇ¾úÀ¸¸ç, CRCO °ø¹ýÀÇ ±Õ¿­Æø °Åµ¿ÀÌ JCP º¸´Ù 50% Á¤µµ ³·Àº °ÍÀ¸·Î ³ªÅ¸³µ´Ù.
Thin bonded continuously reinforced concrete overlay(CRCO) was constructed on He existing jointed plain concrete pavement(HCP) surface at Seo-Hae-Ahn express highway in South Korea in order to evaluate its applicability and performance. Two sections of road were considered for this evaluation. In the first section, the concrete overlayer was placed and cut down to the existing layer to form transverse joints while CRCO was constructed on top of the existing layer in the second section. Early strength concrete(Type III) was utilized for both overlay sections. The depth of milling and the thickness of overlaid layer were 5 cm and 10 cm, respectively. Several vibrating wire gauges(VWG) were installed to evaluate the performance of CRCO with respect to curling, delamination, and crack propagation. As a result of the strength test, it was found that strength of the material reaches the design criteria within 1-3 days. Analysis with vibrating wire gauge(VWG) showed CRCO effectively restricts joint movement. High adhesive strength also was observed from the material regardless of length of aging. Meanwhile, transverse cracks were observed on the middle of the section where JPCP overlay was applied whereas arbitrarily cracks in transverse direction were observed on the section where CRCP was applied.
 
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À¯Áöº¸¼ö;CRC µ¡¾º¿ì±â Æ÷Àå;JCP µ¡¾º¿ì±â Æ÷Àå;CRC µ¡¾º¿ì±â;Ãʱ⠰ŵ¿;maintenance and rehabilitation;thin bonded concrete overly;jointed concrete overlay(JCO);continuously reinforced concrete overlay(CRCO);early age behavior;
 
Çѱ¹µµ·ÎÇÐȸ³í¹®Áý / v.11, no.2, 2009³â, pp.121-132
Çѱ¹µµ·ÎÇÐȸ
ISSN : 1738-7159
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200921140045892)
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