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Çѱ¹°ÇÃà½Ã°øÇÐȸ / v.10, no.3, 2010³â, pp.113-120
150MPa ÃÊ°í°­µµ ÄÜÅ©¸®Æ®ÀÇ ¹èÇÕ ¹× Àç·á¿ªÇÐÆ¯¼º Æò°¡ ¿¬±¸
( Evaluation on Mechanical and Mixing Properties of Ultra-high Strength Concrete with fck=150MPa )
°­ÈÆ;¾ÈÁ¾¹®;½Å¼º¿ì; ÇѾç´ëÇб³ °ÇÃà°øÇаú;¾È»ê1´ëÇÐ °ÇÃ༳°è°ú;ÇѾç´ëÇб³ °ÇÃà°øÇаú;
 
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º» ¿¬±¸¿¡¼­´Â ½Ç³» ¹èÇÕ ½ÇÇèÀ» ÅëÇÏ¿© 150MPa ÃÊ°í°­µµ ÄÜÅ©¸®Æ®ÀÇ Á¦¹Ý ¹°¼ºÀ» Æò°¡ÇÑ ÈÄ 150MPa ÃÊ°í°­µµ ÄÜÅ©¸®Æ®Á¦Á¶¸¦ À§ÇÑ ÃÖÀû ¹èÇÕ Á¶°ÇÀ» Á¦½ÃÇϰíÀÚ ÇÏ¸ç ¾ÐÃà°­µµ, ÀÀ·Â-º¯Çü·ü °ü°è, ź¼º°è¼ö¿Í ÀÎÀå°­µµ, ÈÚ°­µµ µî°ú °°Àº ±âº»ÀûÀÎ Àç·á¿ªÇРƯ¼ºÀ» Æò°¡ÇϰíÀÚ ÇÑ´Ù. À̸¦ À§ÇÏ¿© ÃÊ°í°­µµ ÄÜÅ©¸®Æ®ÀÇ ¸ñÇ¥ ¹°¼ºÀ¸·Î ¹èÇÕ°­µµ´Â 150MPa, ½½·³ÇÁ Ç÷δ $700{pm}50mm$¸¦ ¸ñÇ¥·Î Á¤ÇÏ¿© 57°³ÀÇ ¹èÇÕÀ» ½Ç½ÃÇÏ¿´À¸¸ç, °¢°¢ÀÇ ¹èÇÕÁ¶°Ç¿¡ µû¸¥ ¹°¼º ¹× ¿ªÇÐÆ¯¼ºÀ» °ËÅäÇÏ¿´´Ù. ½ÇÇè°á°ú ÃÊ°í°­µµ ÄÜÅ©¸®Æ®´Â º¸ÅëÀÇ °í°­µµ ÄÜÅ©¸®Æ®º¸´Ù ¸Å¿ì Å« Á¡¼ºÀ» °¡Áö¹Ç·Î ÀÌ·¯ÇÑ Á¡¼º°ú ÄÜÅ©¸®Æ® Ÿ¼³ ¹× ÀÛ¾÷¼ºÀÇ »ó°ü¼ºÀ» °í·ÁÇÏ¿© 700~800mm Á¤µµÀÇ Ç÷ΰªÀ» È®º¸ÇÏ¿©¾ß ÇÒ °ÍÀ¸·Î ÆÇ´ÜµÇ¸ç, Àç·É 56ÀÏ ¾ÐÃà°­µµ¸¦ 100%·Î ÇÒ ¶§ 3ÀÏÀº 64%, 7ÀÏÀº 70%, 28ÀÏÀº ¾à 95% ¹ßÇöÇÏ¿´´Ù. 150MPa Á¤µµÀÇ ÃÊ°í°­µµ ÄÜÅ©¸®Æ® Á¦Á¶¸¦ À§ÇÑ ´ÜÀ§ ½Ã¸àÆ®·®Àº ´ë·« 1030~1150kg/$m^3$ Á¤µµÀ̸ç, ¹°-°áÇÕÀçºñ´Â 12~14%ÀÇ ¹üÀ§ ³»¿¡¼­ Àû´çÇϸç, ÀܰñÀçÀ²Àº Á¡¼º ¹× ÀÛ¾÷¼ºÀ» °í·ÁÇÏ¿© 30~35% ¹üÀ§ ³»¿¡¼­ °áÁ¤µÉ ¼ö ÀÖÀ½À» È®ÀÎÇÏ¿´´Ù.
Ultra-High Strength Concrete (UHSC) demands a clear presentation of its mechanical properties, as distinct from normal strength concrete, and an evaluation of the serviceability of high-rise buildings that use ultra-high strength concrete. Ultra-high strength concrete fck=150MPa was manufactured with pre-mix cement, and an experimental study was conducted to evaluate the mixing properties and compressive strength, with the major variables being unit cement contents, water-binder ratio, and type of pre-mix cement. The test result showed that 150MPa concrete requires about 6~7 minutes of mixing time until each of the materials (ordinary Portland cement, silica fume, blast-furnace slag powder and anhydrite) are sufficiently revitalized. The slump flow of fresh concrete was shown to be about 700~800mm with the proper viscosity. The average value of concrete compressive strength was shown to be about 70% in 7 days, 85% in 14 days, and 95% in 28 days, for 56 days of concrete material age.
 
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ÃÊ°í°­µµ ÄÜÅ©¸®Æ®;½½·³ÇÁ Ç÷Î;¾ÐÃà°­µµ;Ultra-high Strength Concrete;Slump Flow;Compressive Strength;150MPa;
 
Çѱ¹°ÇÃà½Ã°øÇÐȸÁö / v.10, no.3, 2010³â, pp.113-120
Çѱ¹°ÇÃà½Ã°øÇÐȸ
ISSN : 1598-2033
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO201027042828492)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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