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Çѱ¹Áö¹Ý°øÇÐȸ / v.25, no.10, 2009³â, pp.111-122
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Áö¹Ý ¼Ò½Ç È¥ÇÕÀçÀÇ ¿ëÇØ°úÁ¤ ¸ð´ÏÅ͸µ
( Dissolution Monitoring of Geo-Soluble Mixtures ) |
| Âä²ÎÈË;º¯¿ëÈÆ;¾ö¿ëÈÆ;½É¿µÁ¾;ÀÌÁ¾¼·; °í·Á´ëÇб³ °ÇÃà»çȸȯ°æ°øÇкÎ;°í·Á´ëÇб³ °ÇÃà»çȸȯ°æ°øÇкÎ;°í·Á´ëÇб³ °ÇÃà»çȸȯ°æ°øÇкÎ;Çѱ¹ÅäÁöÁÖÅðø»ç ÅäÁöÁÖÅÿ¬±¸¿ø;°í·Á´ëÇб³ °ÇÃà»çȸȯ°æ°øÇкÎ;
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| Áö¹Ý¿¡ Æ÷ÇÔµÈ ÀÔÀÚÀÇ ¿ëÇØÀÛ¿ëÀº ÈëÀÇ °µµ¸¦ ÀúÇϽÃ۰í, ÁöÇϱ¸Á¶¹°ÀÇ Ä§Çϸ¦ ¹ß»ý½ÃŲ´Ù. º» ³í¹®¿¡¼´Â ÀÔÀÚ¿ëÇØ½Ã È¥ÇÕÀçÀÇ ¹°¸®Àû Ư¼º º¯È¸¦ Á¶»çÇϰíÀÚ ÇÏ¿´´Ù. ħÇÏ·® ÃøÁ¤°ú Àü´ÜÆÄ ÃøÁ¤°ú °°Àº °Å½ÃÀû ¹ÝÀÀÀ» Æò°¡Çϱâ À§ÇØ, ¼Ò±Ý°ú ¸ð·¡·Î ±¸¼ºµÈ È¥ÇÕÀ縦 »ç¿ëÇÏ¿´´Ù. ¶ÇÇÑ, ±¤Åº¼º(photoelastic) µð½ºÅ©¿Í ¾óÀ½ µð½ºÅ© È¥ÇÕÀ縦 ÀÌ¿ëÇÏ¿© Èû ¿¬°á°í¸®(force chain), °£±Ø, Á¢ÃËÁ¡¼ö(coordination number), ±×¸®°í ¼öÆò·Â º¯È¿Í °°Àº ¹Ì½ÃÀû °Åµ¿À» ºÐ¼®ÇÏ¿´´Ù. ¼Ò±Ý-¸ð·¡ È¥ÇÕÀç¿¡¼ Àü´ÜÆÄ´Â ¾Ð¹Ð¼¿¿¡ ¼³Ä¡µÈ ´Ù´ÜÀÇ º¥´õ ¿¤¸®¸ÕÆ®·Î ÃøÁ¤µÇ¾ú°í, ±¤Åº¼º µð½ºÅ©-¾óÀ½ µð½ºÅ© È¥ÇÕÀçÀÇ ¿ªÇÐÀû °Åµ¿Àº ·Îµå¼¿°ú µðÁöÅÐ À̹ÌÁö¸¦ ÀÌ¿ëÇÏ¿© ºÐ¼®µÇ¾ú´Ù. ½ÇÇè°á°ú, ¼Ò±ÝÀÇ ¿ëÇØ½Ã Àü´ÜÆÄ ¼Óµµ´Â Ãʱ⿡´Â °¨¼ÒÇÑ ÈÄ¿¡ Áõ°¡ÇÑ ÈÄ ÀÏÁ¤ÇÑ °ªÀ¸·Î ¼ö·ÅÇÏ¿´´Ù. ¿ëÇØ°¡´É ÀÔÀÚÀÇ Å©±â°¡ Ä¿Áú¼ö·Ï ±×¸®°í ÀÔÀÚÆÐÅ·ÀÌ ºÒ±ÔÄ¢ÇØÁú¼ö·Ï ÀÔÀÚ¿ëÇØ½Ã ¼öÆò·ÂÀÇ º¯È°¡ ´õ Ä¿Áö´Â °ÍÀ» ¾Ë ¼ö ÀÖ¾ú´Ù. ¿ëÇØ ÈÄ, °£±Øºñ´Â Áõ°¡Çß°í, Á¢ÃËÁ¡¼ö´Â °¨¼ÒÇÏ¿´´Ù. º» ¿¬±¸¿¡¼´Â Èû ¿¬°á°í¸®, °£±Øºñ, Á¢ÃËÁ¡¼ö¿Í °°Àº ÀÔÀÚÀÇ °Åµ¿º¯È°¡ Àü´ÜÆÄ ¼Óµµ¿Í Àüü½Ã½ºÅÛÀÇ ¼öÆò·Â º¯È °°Àº ÀüüÀûÀÎ °Åµ¿¿¡ ¿µÇâÀ» ÁÖ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù. |
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| Dissolution of some of geo-materials may yield the loss of the soil strength and the settlement of earth structures. The goal of this study is to monitor the several physical behaviors of soluble mixtures during dissolution. Sand-salt mixtures are used to monitor the meso to macro response including the settlements and shear waves. The mixtures of photoelastic and ice disks are used to monitor micro to meso behavior of soluble mixture including the void ratio, force chain, coordination number and horizontal force changes. In the sand-salt mixtures, shear waves are measured by using bender elements in conventional oedometer cells. In the photoelastic disk - ice disk mixtures, micro to meso response are measured by digital images and load cells. The shear wave velocity decreases at the initial stage of the dissolution, and then increases and approaches to asymptotic value. The larger dissoluble particle and the more random packing produces the severe horizontal fore change. After dissolution, the void increases and the coordination number decreases. This study demonstrates that the particle level behavior such as the changes of the force chain, void ratio, and coordination number affects the global behavior such as the change of the shear wave velocity and horizontal force of the system. |
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| Ű¿öµå |
| Coordination number;Dissolution;Force chain;Photoelastic;Shear waves;Void ratio; |
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Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.25, no.10, 2009³â, pp.111-122
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200919061727245)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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