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Çѱ¹°ÇÃà½Ã°øÇÐȸ / v.9, no.5, 2009³â, pp.119-125
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( Effect of Mineral Admixture Types on the Engineering Properties and the Drying Shrinkage of the Concrete ) |
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| º» ¿¬±¸¿¡¼´Â ½Ç¹«¿¡¼ ÁÖ·Î »ç¿ëµÇ°í ÀÖ´Â FA, 35 ¹× CKD ġȯ·ü¿¡ µû¸¥ ÄÜÅ©¸®Æ®ÀÇ ±âÃÊÀû ¹°¼º ¹× °ÇÁ¶¼öÃà¿¡ ¹ÌÄ¡´Â ¿µÇâÀ» ºÐ¼®Çϰí À̸¦ Åä´ë·Î °ÇÁ¶¼öÃà ÇØ¼®À» ½Ç½ÃÇÏ¿© È¥ÈÀç°¡ ÄÜÅ©¸®Æ®ÀÇ °ÇÁ¶¼öÃà¿¡ ¹ÌÄ¡´Â ¿µÇâÀ» Á¤·®ÀûÀ¸·Î Æò°¡ÇϰíÀÚ ÇÑ´Ù. ½ÇÇ躯¼ö·Î¼ È¥ÈÀç ġȯ·üÀº $0{sim}20%$ ¼öÁØÀ¸·Î °áÁ¤ÇÏ¿´°í, W/B´Â $40{sim}50%$ÀÇ ¼öÁØÀ¸·Î °áÁ¤ÇÏ¿´´Ù. °ÇÁ¶¼öÃàÇØ¼®À» À§ÇØ Áö¼öÇÔ¼ö¸ðµ¨À» Àû¿ëÇÏ¿´´Ù. ¿¬±¸°á°ú¿¡ µû¸£¸é, È¥ÈÀç ġȯÀ²ÀÌ Áõ°¡ÇÔ¿¡ µû¶ó À¯µ¿¼º ¹× °ø±â·®ÀÌ °¨¼ÒÇÏ¿´À¸¸ç Ãʱâ¾ÐÃà °µµ°¡ ÀúÇϵÊÀ» È®ÀÎ ÇÏ¿´´Ù. °ÇÁ¶¼öÃà Æ¯¼ºÀ¸·Î È¥ÈÀç ġȯ·üÀÌ Áõ°¡ÇÔ¿¡ µû¶ó °ÇÁ¶¼öÃàÀº Áõ°¡ÇÏ´Â °æÇâÀ» º¸¿´À¸¸ç, °ÇÁ¶¼öÃà ÇØ¼®°á°ú Áö¼öÇÔ¼ö ¸ðµ¨ÀÌ ÃøÁ¤Ä¡¸¦ ¾çÈ£ÇÏ°Ô ÃßÁ¤ÇÔÀ» ¾Ë ¼ö ÀÖ¾ú°í, È¥ÈÀçÀÇ ¿µÇâÀ» °í·ÁÇÒ Çʿ伺ÀÌ Á¦±âµÇ¾ú´Ù. |
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| In this paper, the engineering properties and estimation of drying shrinkage of concrete incorporating fly ash (FA), blast furnace slag (BS) and cement kiln dust (CKD) were discussed. FA, BS and CKD contents ranged from 0% to 20%. Water to binder ratio (W/B) also ranged from 40 to 50 %, with a 5% interval. For estimating drying shrinkage, an exponential model proposed by the author was applied, According to results, the use of FA, BS and CKD resulted in a decrease of flowability and air contents. As expected, the use of admixtures also decreases the early age strength of concrete, while at later age, due to a pozzolanic reaction of FA and BS, the compressive strength was recovered to a value comparable with that of plain concrete. For drying shrinkage, the use of admixtures led to an increase in the drying shrinkage of concrete. The exponential model suggested by the author showed good agreement between the calculated and experimental values both at early age and at later age. |
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| È¥ÈÀç;°ÇÁ¶¼öÃà;ÇöóÀÌ ¾Ö½Ã;°í·Î½½·¡±×;½Ã¸àÆ® ų¸¥´õ½ºÆ®;Mineral admixture;Concrete;Drying shrinkage;Fly ash;Blast furnace slag;Cement kiln dust; |
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Çѱ¹°ÇÃà½Ã°øÇÐȸÁö / v.9, no.5, 2009³â, pp.119-125
Çѱ¹°ÇÃà½Ã°øÇÐȸ
ISSN : 1598-2033
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200935736657935)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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