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Çѱ¹°ÇÃà½Ã°øÇÐȸ / v.10, no.4, 2010³â, pp.3-9
º¹ÇÕ¼¶À¯(PP, NY)¸¦ È¥ÀÔÇÑ 60, 80MPa 3¼ººÐ°è °í°­µµÄÜÅ©¸®Æ®ÀÇ ³»È­Æ¯¼º
( Spalling Properties of 60, 80MPa High Strength Concrete with Fiber )
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º» ¿¬±¸´Â °í°­µµÄÜÅ©¸®Æ®ÀÇ ³»È­¼º´É ÁõÁø¿¡ È¿°úÀûÀÎ °ÍÀ¸·Î ¾Ë·ÁÁø ¼¶À¯(PP+NY) È¥ÀÔÀ² º¯È­¿¡ µû¸¥ 60 MPa, 80 MPa 3¼ººÐ°è °í°­µµÄÜÅ©¸®Æ®ÀÇ À¯µ¿¼º ¹× °­µµÆ¯¼ºÀ» °ËÅäÇÏ°í ³»È­½ÃÇèÀ» ÅëÇØ Æø·ÄÇö»óÀ» È®ÀÎÇÏ¿´´Ù. ¼¶À¯(PP+NY) È¥ÀÔÀ²À» 0%, 0.05%, 0.1%, 0.2%·Î »êÁ¤ÇÏ¿© ½ÇÇèÇÑ °á°ú, À¯µ¿¼º ¹× °­µµ°¡ ¹Ì¼¼ÇÏÁö¸¸ ÀúÇÏÇÏ´Â °ÍÀ¸·Î ³ªÅ¸³µÀ¸³ª, Àü¹ÝÀûÀ¸·Î ¸ñÇ¥ ¹üÀ§¸¦ ¸¸Á·ÇÏ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù. 3½Ã°£ ³»È­ ÈÄ Æø·ÄƯ¼ºÀ¸·Î 0%¿¡¼­´Â Æø·ÄÇö»óÀÌ ³ªÅ¸³µÁö¸¸, 0.05%À̻󿡼­´Â Ç¥¸é¿¡ ¹Ì¼¼ÇÑ ±Õ¿­¸¸ ¹ß»ýÇϰí ÇǺ¹ Å»¶ôÇö»óÀº ³ªÅ¸³ªÁö ¾Ê´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ¶ÇÇÑ Æø·ÄÀÌ ¹ß»ýµÇÁö ¾ÊÀº °ø½ÃüÀÇ °æ¿ì ÀÜÁ¸¾ÐÃà°­µµÀ²ÀÌ 5 ~ 6%·Î ³ªÅ¸³µ´Ù. ÀÌ»ó ÀûÀº ¾çÀÇ ¼¶À¯(PP+NY)È¥ÀÔÀ²ÀÎ 0.05%À̻󿡼­ Æø·ÄÇö»óÀÌ ¹æÁöµÇ¾î °¡Àå ¾çÈ£ÇÑ °ÍÀ¸·Î ÆÇ´ÜµÈ´Ù.
Fire resistance and material properties of high-strength concrete (W/B 21.5%, 28.5%) with OPC, BS and FA were tested in this study. Main factors of the test consisted of fiber mixing ratio and W/B. Two types of fiber (NY, PP) mixed with the same weight were used for the test. The fiber mixing ratios were 0%, 0.05%, 0.1%, and 0.2% of the concrete weight. After performing the test, Under the W/B level of 21.5% and 28.5%, the spalling was effectively resisted by using the high strength concrete with fiber mixing ratios of 0.05%~0.1%. Compressive strength, flowability and air content are similar those of the fiberless high-strength concrete with the same W/B.
 
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°í°­µµ ÄÜÅ©¸®Æ®;Æø·ÄƯ¼º;¼¶À¯È¥ÀÔÀ²;Æú¸®ÇÁ·ÎÇÊ·»¼¶À¯;³ªÀ̷м¶À¯;High Strength Concrete;Spalling Properties;Fiber volume fraction;Polypropylene Fiber;Nylon Fiber;
 
Çѱ¹°ÇÃà½Ã°øÇÐȸÁö / v.10, no.4, 2010³â, pp.3-9
Çѱ¹°ÇÃà½Ã°øÇÐȸ
ISSN : 1598-2033
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO201026039608701)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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