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°ñÀçÀÇ ¼ººÐºÐ¼®À» ÅëÇÑ ÅäºÐÇÔ·® Æò°¡¹æ¹ý¿¡ °üÇÑ ½ÇÇèÀû ¿¬±¸ / An Alysisan Experimental Study on the Evaluation Method of Clay Mineral Content through Aggregate Composition Analysis |
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Çѱ¹°ÇÃà½Ã°øÇÐȸ ³í¹®Áý, Vol.24 No.5 (2024-10) |
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½ÃÀÛÆäÀÌÁö(565) ÃÑÆäÀÌÁö(11) |
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ÅäºÐ; °ñÀç; ÄÜÅ©¸®Æ®; ´ÜÀ§¼ö·®; ¾ÐÃà°µµ ; clay minerals; aggregate; concrete; reducing unit water content; compressive strength |
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º» ¿¬±¸´Â Çѱ¹»ê¾÷Ç¥ÁØ(KS)ÀÇ KS F 2527(ÄÜÅ©¸®Æ®¿ë °ñÀç)¿¡¼ ±ÔÁ¤µÇÁö ¾ÊÀº ÅäºÐÀÇ Ç°Áú±âÁØ°ú ½ÃÇè¹æ¹ýÀ» Á¦¾ÈÇÏ ±â À§ÇØ ÁøÇàµÇ¾ú½À´Ï´Ù. ÇöÀç ÅäºÐ¿¡ ´ëÇÑ ¸íÈ®ÇÑ Ç°Áú±âÁØ°ú ½ÃÇè¹æ¹ýÀÌ Á¸ÀçÇÏÁö ¾ÊÀ¸¸ç, ÇÐ°è ¹× »ê¾÷°è¿¡¼µµ °ü·Ã ¿¬ ±¸°¡ Á¦ÇÑÀûÀÌ´Ù. µû¶ó¼ º» ¿¬±¸¿¡¼´Â °ñÀç¿¡ Æ÷ÇÔµÈ ÅäºÐÀ» ºÐ¼®ÇÒ ¼ö ÀÖ´Â Á¤·®ÀûÀÎ ¹æ¹ýÀ» ¼±Á¤ÇÏ°í À̸¦ Æò°¡ÇÏ¿©, ÄÜ Å©¸®Æ® ¼º´É Æò°¡¸¦ ÅëÇØ ÅäºÐ ÇÔ·®ÀÇ Ç°Áú±âÁØÀ» Á¦¾ÈÇÏ°íÀÚ ÇÏ¿´À¸¸ç ¼º´ÉÆò°¡°á°ú ÅäºÐÀÇ ÈÇÐÀû Á¶¼ºÀº Á¡Åä¿¡¼ ÈçÈ÷ ¹ß°ßµÇ´Â ÈÇÐ ¼ººÐÀÎ Al O , Fe O , SiO ·Î ±¸¼ºµÇ¾î ÀÖÀ½À» È®ÀÎÇÏ¿´´Ù. ¶ÇÇÑ ÅäºÐ ÇÔ·®ÀÌ Áõ°¡ÇÔ¿¡ µû¶ó ÅäºÐÁö¼ö23 23 223 23(Al O +Fe O )µµ Áõ°¡ÇÏ´Â °ÍÀ¸·Î ³ªÅ¸³µÀ¸¸ç ÅäºÐÁö¼öÀÇ Áõ°¡¿¡ µû¶ó ÄÜÅ©¸®Æ®ÀÇ ´ÜÀ§¼ö·®Àº Áõ°¡ÇÏ°í, ¾ÐÃà°µµ´Â ÀúÇϵǴ °æÇâÀ» ³ªÅ¸³Â´Ù. ÄÜÅ©¸®Æ® ¼º´É Æò°¡¸¦ ¹ÙÅÁÀ¸·Î °ñÀç°¡ Æ÷ÇÔÇÏ´Â ÅäºÐÀÇ Áö¼ö(Al O ¿Í Fe O )ÀÇ ÃÖ´ë ÇÑ°èÁ¡Àº 23%23 23·Î ³ªÅ¸³µ´Ù.ÀÌ´Â Plain ÄÜÅ©¸®Æ® ½ÇÇèüÀÇ ¾ÐÃà°µµ ´ëºñ 15% °¨¼ÒÁ¡À» ±âÁØÀ¸·Î ÅäºÐÁö¼ö °ªÀ» ¼³Á¤ÇÑ °á°úÀÌ´Ù. µû¶ó¼ º» ¿¬±¸¿¡¼´Â ÅäºÐÇÔ·®¿¡ µû¶ó ÅäºÐÁö¼ö¸¦ Æò°¡¹æ¹ý¿¡ ´ëÇØ ¿¬±¸ ÇÏ¿´À¸¸ç ÀÌ´Â ÄÜÅ©¸®Æ®ÀÇ ¼º´É Çâ»ó°ú ¾ÈÁ¤¼º È®º¸¿¡ ±â ¿©ÇÒ °ÍÀ¸·Î »ç·áµÈ´Ù. |
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This research was initiated to establish quality standards and testing methods for fine dust in aggregates, a component currently not regulated under the Korean Industrial Standards(KS) KS F 2527 for Concrete Aggregates. With limited existing research and no definitive quality or testing standards for fine dust, this study sought to provide a quantitative analysis of fine dust in aggregates and to set forth quality standards based on the dust content through a concrete performance evaluation. The experimental findings showed that the primary chemical constituents of the fine dust were aluminum oxide(Al2O3), iron oxide(Fe2O3), and silicon dioxide(SiO2). It was observed that increasing levels of fine dust in the aggregates led to higher values of the fine dust index(Al2O3+Fe2O3). This escalation in the fine dust index corresponded with an increase in the unit water content of the concrete and a consequent decline in compressive strength. Based on these observations, a maximum allowable limit for the fine dust index in aggregates was proposed at 23%. This limit was derived from the correlation between fine dust content and a 15% reduction in compressive strength of standard concrete specimens. The proposed evaluation method for the fine dust index based on its content in aggregates is expected to enhance concrete performance and ensure structural stability. This contribution to the field addresses a significant gap in the standards and provides a foundation for further research and standardization in the construction materials industry. |