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Çѱ¹Áö¹Ý°øÇÐȸ / v.20, no.6, 2004³â, pp.109-118
Aging Effect¸¦ °í·ÁÇÑ Á¡¼ºÅäÀÇ ¾Ð¹ÐƯ¼º
( Consolidation Characteristics of Clays Considering the Aging Effect )
±è¿µ¼ö;ÀÌ»ó¿õ;±è´ë¸¸;Çö¿µÈ¯; °æºÏ´ëÇб³ Åä¸ñ°øÇаú;°æºÏ´ëÇб³ Åä¸ñ°øÇаú;°æºÏ´ëÇб³ Åä¸ñ°øÇаú;°æºÏ´ëÇб³ Åä¸ñ°øÇаú;
 
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Á¡ÅäÀÇ ¾Ð¹ÐÀº ½Ã°£Àû Áö¿¬À» °®´Â Çö»óÀ¸·Î ½Ã°£Àû Áö¿¬Àº ¼Ò¼ºÀû Áö¿¬½Ã°£°ú ¼ö¸®Àû Áö¿¬½Ã°£À¸·Î ³ª´²Áø´Ù. º» ¿¬±¸¿¡¼­´Â Á¡ÅäÀÇ 2Â÷¾Ð¹ÐÀÌ ¾Ð¹ÐħÇÏ¿¡ ¾î¶°ÇÑ ¿µÇâÀ» ¹ÌÄ¡´ÂÁö¸¦ ¾Ë°íÀÚ CRS ½ÃÇèÀ» ½Ç½ÃÇÏ¿´´Ù. ½ÃÇè°á°ú ¼Ò¼ºÀû Áö¿¬½Ã°£Àº ¼±Çà¾Ð¹ÐÇÏÁßÀ» ±¸Çϴµ¥ Å« ¿µÇâÀ» ¹ÌÄ¡´Â °ÍÀ¸·Î ³ªÅ¸³µ°í, ¾Ð¹ÐÇÏÁß°ú ¾Ð¹ÐÁö¿¬½Ã°£À¸·ÎºÎÅÍ À¯»ç¼±Çà¾Ð¹ÐÇÏÁßÀ» ¿¹ÃøÇÏ´Â ½ÄÀ» Á¦¾ÈÇÏ¿´´Ù. ¶Ç ¾Ð¹ÐÁö¿¬½Ã°£¿¡ µû¸¥ ¾Ð¹Ð°è¼öÀÇ Æ¯Â¡Àº ¼±Çà¾Ð¹Ð Àü±îÁö´Â Å« ¹üÀ§ÀÇ °ªÀ» °¡Áö³ª ¼±Çà¾Ð¹ÐÇÏÁßÀÇ ¾à 2¹è ÁöÁ¡À» Áö³ª¼­´Â ¾Ð¹ÐÁö¿¬½Ã°£¿¡ °ü°è¾øÀÌ ÀÏÁ¤ÇÑ °ªÀ¸·Î ¼ö·ÅÇÏ´Â °æÇâÀ» ³ªÅ¸³Â´Ù. ±×¸®°í Á¤±Ô¾Ð¹Ð¿µ¿ª¿¡¼­ÀÇ Åõ¼ö°è¼ö´Â °£±Øºñ¿Í ¹ÐÁ¢ÇÑ °ü°è¿¡ ÀÖÀ¸¸ç, Samarasinghe µîÀÇ Á¦¾È½ÄÀ» ÀÌ¿ëÇÏ¿© ½ÃÇè°á°ú·ÎºÎÅÍ Åõ¼ö»ó¼ö n, $C_1$°ªÀ» °áÁ¤ÇÏ¿´°í, Kozeny-Carman Á¦¾È½Ä°ú ºñ±³ºÐ¼®ÇÏ¿© º¸¾Ò´Ù. Åõ¼ö°è¼ö¿Í °£±Øºñ °ü°è¿¡¼­µµ ¾Ð¹ÐÁö¿¬½Ã°£¿¡ ÀÇÇÑ Áö¿¬¾ÐÃàÀ¸·Î ÀÎÇÏ¿© aging effect¸¦ °üÂûÇÒ ¼ö ÀÖ¾ú´Ù.
The consolidation of clay occurs with time lag, and this kind of lag can be separated into plastic lag and hydraulic lag. In this study, CRS tests were performed to research the effect of original secondary consolidation of the clay with respect to the characteristics of consolidation. Test results showed that plastic time lag was one of the key factors to get the preconsolidation pressure, and suggested the formula of the Quasi-preconsolidation pressure obtained from the relationship between consolidation time lag and consolidation pressures. In addition though the characteristics of coefficient of consolidation show a wide range of values, after passing the double preconsolidation point, it showed the tendency to converge into the constant value. The coefficient of permeability in normally consolidated state is related to its void ratio, and the permeability variables, n and $C_1$ were determined by the test results using the equation suggested by Samarasinghe. et. al. And then the equation was compared with the Kozeny-Carman's equation. Because of delayed compression caused by consolidation time lag, aging effect could be also found in the relationship between coefficient of permeability and void ratio.
 
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Aging effect;CRS test;Quasi-preconsolidation;Secondary settlement;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.20, no.6, 2004³â, pp.109-118
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200411922634137)
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