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Çѱ¹°ÇÃà½Ã°øÇÐȸ / v.9, no.5, 2009³â, pp.127-133
ÇÁ¸®¹Í½º ½Ã¸àÆ®ÀÇ È°¿ë¼º ºÐ¼®À» À§ÇÑ °áÇÕÀçÀÇ È¥ÇÕ¹æ¹ý¿¡ µû¸¥ °íÀåµµ ÄÜÅ©¸®Æ®ÀÇ ¹°¼º ºÐ¼®
( Physical Analysis of High Strength Concrete According to Mixing Methods of Binders for Application Analysis of Pre-Mix Cement )
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ÀϹÝÀûÀ¸·Î ÄÜÅ©¸®Æ®¸¦ °í°­µµÈ­ Çϱâ À§Çؼ­´Â °áÇÕÀçÀÇ °­µµ¸¦ Áõ°¡½ÃŰ´Â °ÍÀÌ Áß¿äÇÏ´Ù. ±×·¯³ª °í°­µµ ÄÜÅ©¸®Æ®¿¡ »ç¿ëµÇ´Â ±¤¹°Áú ȥȭÀçµéÀÌ °¡Áø °í°áÇö»óÀ¸·Î ÀÎÇØ °³º°ÅõÀÔ È¥ÇÕ ½Ã¿¡´Â ºÐ»ê¼ºÀÌ Å©°Ô ÀúÇϵǾî À¯µ¿¼ºÀ» Àú°¨½Ã۰í, ÃæºÐÇÑ °­µµ¸¦ ¹ßÈÖÇÏÁö ¸øÇÏ´Â ¹®Á¦°¡ ¹ß»ýÇÑ´Ù. ÀÌ·¯ÇÑ ¹®Á¦¸¦ ÇØ°áÇϱâ À§ÇØ °¢°¢ÀÇ °áÇÕÀ縦 »çÀü¿¡ ÇÁ¸®¹Í½ºÇÏ¿© ÄÜÅ©¸®Æ®¸¦ Á¦Á¶ÇÏ°Ô µÇ¸é ±¤¹°Áú ȥȭÀç°¡ ÃæºÐÈ÷ °áÇÕÀç Áß¿¡ ºÐ»êµÇ¾î ÄÜÅ©¸®Æ®ÀÇ À¯µ¿¼º Çâ»ó ¹× °­µµÁõÁø µî¿¡ ±â¿©ÇÒ ¼ö ÀÖÀ» °ÍÀ¸·Î ±â´ëµÈ´Ù. µû¶ó¼­ º» ¿¬±¸¿¡¼­´Â W/B $15{sim}35%$ ¹üÀ§³»¿¡¼­ ÇÁ¸®¹Í½º ½Ã¸àÆ®ÀÇ È¿°ú¸¦ ºÐ¼®Çϱâ À§ÇØ °áÇÕÀçÀÇ È¥ÇÕ¹æ¹ý¿¡ µû¸¥ °í°­µµ ÄÜÅ©¸®Æ®ÀÇ ¹°¼ºÀ» ºÐ¼®ÇÏ¿´´Ù. ±× °á°ú À¯µ¿¼ºÀº ÇÁ¸®¹Í½ºÀÇ ±ÕÀÏºÐ»ê ¹× º¼ º£¾î¸µ È¿°ú·Î ÀÎÇØ °³º°È¥ÇÕº¸´Ù ¾çÈ£ÇÑ °á°ú¸¦ ³ªÅ¸³»¾ú°í, °ø±â·®Àº ÇÁ¸®¹Í½ºÀÇ ½Ã¸àÆ® ÀÔÀÚ°£ °ø±ØÀ» ½Ç¸®Ä«Ç¾ÀÇ ¹Ì¼¼ÇÑ ÀÔÀÚ°¡ ÃæÀüÇÏ´Â ¸¶ÀÌÅ©·Î ÇÊ·¯ È¿°ú·Î ÀÎÇØ °³º°È¥ÇÕ º¸´Ù ¾à°£ °¨¼ÒÇÏ¿´À¸¸ç, ÀÀ°á½Ã°£Àº ÇÁ¸®¹Í½ºÀÇ ±ÕÁúÇÑ ºÐ»êÀÌ ¼öÈ­¹ß¿­¼Óµµ¿¡ ¿µÇâÀ» ÁÖ¾î °³º°È¥ÇÕº¸´Ù ´ÜÃàµÇ¾ú´Ù. ¾ÐÃà°­µµ´Â ÇÁ¸®¹Í½ºÀÇ °ø±Ø±¸Á¶ Ä¡¹ÐÈ­·Î ÀÎÇÏ¿© Áõ°¡ÇÏ¿´À¸¸ç, °­µµÆíÂ÷ ¶ÇÇÑ Æò±ÕÀûÀ¸·Î ¾à 1.69 % Á¤µµ º¯µ¿°è¼ö°¡ °¨¼ÒÇÏ´Â È¿°ú¸¦ ³ªÅ¸³»¾ú´Ù.
It is important to increase the strength of binders in order to enhance the strength of concrete. However, when the mineral admixture used for high strength concrete is incorporated individually, its dispersibility decreases due to the phenomenon of compaction, which reduces its fluidity and results in insufficient strength being created. To solve this problem, we can pre-mix each binder in advance to disperse a mineral admixture among binders, which will strengthen the fluidity and strength of concrete. Therefore, this study analyzed the properties of high strength concrete depending on the mix method used, to determine the effect of pre-mix cements ranging from W/B 15 to 35%. It was found that the fluidity of pre-mix increased to a level higher than that of individual mix due to its dispersion and ball bearing effect. The air content was slightly decreased from the result of individual mix due to the micro filler effect, which causes fine particles of silica-fume to fill the voids among cement particles, while the setting time of pre-mix was shorter than that of individual mix, because enhanced dispersion of pre-mix affects hydration heat time. The compressive strength of pre-mix increased due to the phenomenon of compaction of gap structure, and the variation of coefficient decreased by 1.69% on average in strength variation.
 
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ÇÁ¸®¹Í½º ½Ã¸àÆ®;°í°­µµ ÄÜÅ©¸®Æ®;À¯µ¿¼º;¾ÐÃà°­µµ;Pre-Mix Cement;High Strength Concrete;Fluidity;Compressive Strength;
 
Çѱ¹°ÇÃà½Ã°øÇÐȸÁö / v.9, no.5, 2009³â, pp.127-133
Çѱ¹°ÇÃà½Ã°øÇÐȸ
ISSN : 1598-2033
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200935736657936)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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