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³í¹®¸í ÇÏÀ̺¼·ý ÇöóÀֽ̾à ½Ã¸àÆ®ÀÇ Ãʱ⠼öȭƯ¼º / Early Hydration of High Volume Fly Ash Cement
ÀúÀÚ¸í ÃÖ¿µÃ¶½Äº°ÀúÀÚ ; Á¶¿µ±Ù½Äº°ÀúÀÚ ; Á¤»óÈ­
¹ßÇà»ç Çѱ¹ÄÜÅ©¸®Æ®ÇÐȸ
¼ö·Ï»çÇ× Çѱ¹ÄÜÅ©¸®Æ®ÇÐȸ 2012³âµµ °¡À» Çмú´ëȸ ³í¹®Áý, Vol.24 No.2 (2012-11)
ÆäÀÌÁö ½ÃÀÛÆäÀÌÁö(269) ÃÑÆäÀÌÁö(2)
ISSN 1738-298X
ÁÖÁ¦ºÐ·ù Àç·á / ±¸Á¶
¿ä¾à1 ÃÖ±Ù ÇÏÀ̺¼·ý ÇöóÀֽ̾à ÄÜÅ©¸®Æ®´Â °Ç¼³»ê¾÷¿¡¼­ÀÇ ¿Â½Ç°¡½º Àú°¨´ëÃ¥ÀÇ ÀÏȯÀ¸·Î ½Ã¸àÆ® »ç¿ë·®À» ÁÙÀÏ ¼ö ÀÖ´Â ±â¼ú·Î Æò°¡µÇ°í ÀÖ´Ù. ÇöóÀֽ̾ÃÀÇ ´ë·® »ç¿ëÀ¸·Î Àå±â°­µµ ÁõÁø¿¡ ÀÇÇÑ ÀåÁ¡ÀÌ ÀÖÁö¸¸, ½Ç¿ëÈ­¸¦ À§Çؼ­´Â Á¶±â°­µµ È®º¸°¡ ÇʼöÀûÀ¸·Î ÇØ°áµÇ¾î¾ß ÇÒ ¹®Á¦ÀÌ´Ù. º» ¿¬±¸¿¡¼­´Â ÇÏÀ̺¼·ý ÇöóÀֽ̾à ½Ã¸àÆ®ÀÇ Á¶±â°­µµ È®º¸¸¦ À§ÇÑ Ãʱ⠼öȭƯ¼º¿¡ ´ëÇÑ ½ÇÇèÀ» ¼öÇàÇÏ¿´´Ù. ´Ù¾çÇÑ È­ÇÐÀû ȥȭÁ¦ ¹× ºÐüÀÇ ÀÔµµºÐÆ÷ µîÀ» ´Ù¾çÇÏ°Ô ÇÏ¿© ¹Ì¼Ò¼öÈ­¿­ ½ÃÇè±â¸¦ ÅëÇÏ¿© Ãʱ⠼öȭƯ¼º°ú ÀÀ°áƯ¼ºÀ» ºÐ¼®ÇÏ¿´´Ù. ½ÇÇè°á°ú¸¦ ¹ÙÅÁÀ¸·Î ºÐü·® Á¶Àý ¹× È­ÇÐÀû ÀÚ±ØÁ¦¸¦ ÅëÇØ Á¶±â°­µµÀÇ ¹®Á¦¸¦ ÇØ°áÇÒ ¼ö ÀÖÀ» °ÍÀ¸·Î ÆÇ´ÜµÈ´Ù.
¿ä¾à2 For reduction of CO2 in construction industry, recently high volume fly ash concrete has been used as a substitute for Portland cement. The using of high volume fly ash has many advatages on fresh, hardened and durability properties. One clear disadvantage in use of high volume fly ash is that the replacement of cement decreases rate of early strength development of concrete. In this study, the early hydration of high volume fly ash paste was investigated with chemical admixtures and different size distribution of fly ash particles. From the test results, the rate of early strength development can be increased by using chemical accelerator and fine fly ash.
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