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Çѱ¹°ÇÃà½Ã°øÇÐȸ / v.10, no.1, 2010³â, pp.147-153
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¼øÈ¯°ñÀç ÄÜÅ©¸®Æ®ÀÇ ¿°È¹° È®»ê¼º¿¡ °üÇÑ ¿¬±¸
( A Study on the Chloride Diffusivity of Recycled Aggregate Concrete ) |
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| ÆóÄÜÅ©¸®Æ®¸¦ ±½Àº °ñÀçÀÇ ´ëü Àç·á·Î ÀçȰ¿ëÇÏ°Ô µÇ¸é, °Ç¼³Æó±â¹°ÀÇ Áõ°¡À§±â¿Í õ¿¬°ñÀçÀÇ °í°¥¹®Á¦¸¦ ÇØ°áÇØ ÁÙ ¼ö ÀÖ´Ù. ±×·¯³ª ¼øÈ¯°ñÀç´Â ÄÜÅ©¸®Æ®¿ë °ñÀçÀÇ Ç°Áúº¸´Ù ÀúÇϵǴ °æÇâÀÌ Àֱ⠶§¹®¿¡, À̸¦ °³¼±ÇÏ¿© ÄÜÅ©¸®Æ® Àç·á·Î Ȱ¿ëÇØ¾ß ÇÑ´Ù. ¼øÈ¯°ñÀç ÄÜÅ©¸®Æ®ÀÇ ³»±¸¼º¿¡ °üÇÑ ³í¹®Àº ºÎÁ·ÇÑ ½ÇÁ¤À̹ǷÎ, º» ¿¬±¸¿¡¼´Â ¿°È¹° È®»ê°è¼ö¿¡ ÀÇÇØ Æ÷Á¹¶õÀ縦 È¥ÀÔÇÑ ¼øÈ¯°ñÀç ÄÜÅ©¸®Æ®ÀÇ ¿°È¹° È®»ê¼º¿¡ ´ëÇÑ ±âÃÊÀûÀÎ ÀڷḦ Á¦½ÃÇϴµ¥ ±× ¸ñÀûÀÌ ÀÖ´Ù. ÁÖ¿ä °á°ú·Î´Â ´ÙÀ½°ú °°´Ù. 1) Àç·É¿¡ µû¶ó Æ÷Á¹¶õÀ縦 È¥ÀÔÇÑ ¼øÈ¯°ñÀç ÄÜÅ©¸®Æ®ÀÇ ¾ÐÃà°µµ°¡ Áõ°¡ÇÏ¿´À¸¸ç, ¿°È¹° È®»ê¼ºÀº °¨¼ÒÇÏ¿´´Ù. 2) ¸ðµç Àç·É¿¡¼, ¼øÈ¯±½Àº°ñÀçÀÇ Ä¡È¯À²ÀÌ 30%ÀÎ °æ¿ì °í·Î½½·¡±× ¹× ¸ÞŸī¿Ã¸°À» È¥ÀÔÇÑ ¼øÈ¯°ñÀç ÄÜÅ©¸®Æ®ÀÇ ¿°È¹° È®»ê°è¼ö´Â Ç÷¹ÀÎ ÄÜÅ©¸®Æ®¿Í À¯»çÇϰųª ´õ ³·Àº °á°ú¸¦ ³ªÅ¸³»¾ú´Ù. |
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| The recycling of demolished concrete as an alternative source of coarse aggregates for the production of new concrete can help to solve the growing waste disposal crisis and the problem of the depletion of natural aggregates. The purpose of this study is to investigate the chloride migration of recycled aggregate concrete containing pozzolanic materials by the chloride migration coefficient. The specimens were made with recycled coarse aggregate at various replacement ratios (10, 30, 50%) and metakaolin, blast furnace slag, and fly ash is replaced for recycled concrete with a mixing ratio of 20%. The major results are as follows. 1) The compressive strength of recycled aggregate concrete containing pozzolanic materials increases as the curing age and chloride diffusivity decreases. 2) When the replacement ratio of recycled coarse aggregate is 30%, the chloride migration coefficient of recycled concrete containing blast furnace slag or metakaolin that shows a value similar to or lower than that of plain concrete at all ages. |
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| ¼øÈ¯±½Àº°ñÀç;¿°È¹° È®»ê¼º;³»±¸¼º;ġȯÀ²;recycled coarse aggregate;chloride diffusivity;durability;replacement ratio; |
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Çѱ¹°ÇÃà½Ã°øÇÐȸÁö / v.10, no.1, 2010³â, pp.147-153
Çѱ¹°ÇÃà½Ã°øÇÐȸ
ISSN : 1598-2033
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO201026039609526)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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