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Çѱ¹Áö¹Ý°øÇÐȸ / v.24, no.1, 2008³â, pp.25-35
´Ù¾çÇÑ ¼®¼Ç ·¹º§¿¡¼­ÀÇ ºÒÆ÷È­½ÇÆ®ÀÇ »ïÃà¾ÐÃà°Åµ¿¿¡ °üÇÑ ½ÇÇèÀû ¿¬±¸
( Experimental Study on the Triaxial Compressive Behaviour of Unsaturated Compacted Silt under Various Suction Levels )
±è¿µ¼®;¿ÀÄ« ÈÄ»ç¿À; Çѱ¹°Ç¼³±â¼ú¿¬±¸¿ø Áö¹Ý¹æÀç.ȯ°æ¿¬±¸½Ç;ÀϺ» ±³Åä´ëÇÐ »çȸ±â¹Ý°øÇÐ;
 
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º» ¿¬±¸¿¡¼­´Â ºÒÆ÷È­ÅäÀÇ ¿ªÇÐÆ¯¼ºÀ» ÇØ¸íÇϱâ À§ÇÏ¿© 4°³ÀÇ È¾º¯À§ °èÃø½Ã½ºÅÛ(proximeter)À» ÀÌ¿ëÇÏ´Â ¹æ¹ýÀ¸·Î Æ÷È­ »ïÃà½ÃÇè±â¸¦ °³·®ÇÏ¿© ºÒÆ÷È­ »ïÃà¾ÐÃà½ÃÇèÀ» ¼öÇàÇÏ¿´´Ù. µî¹æÀÀ·ÂÁ¶°ÇÇÏ¿¡¼­ ´Ù¾çÇÑ ¼®¼ÇÀ» ÀÛ¿ë½ÃÄÑ ¾ÐÃà Æ¯¼ºÀ» °ËÅäÇÑ °á°ú, °ø½ÃüÀÇ Ãʱ⠼®¼Ç º¸´Ù ÀÛÀº ¼®¼ÇÀ» ÀÛ¿ë½ÃÄ×À» °æ¿ì Èí¼ö¿¡ ÀÇÇÑ Ã¼Àû¾ÐÃà(wetting collapse)ÀÌ ¹ß»ýÇÔÀ» ¾Ë¾Ò´Ù. ¶ÇÇÑ ´Ù¾çÇÑ ¼®¼Ç ·¹º§ ¹× ±¸¼Ó¾Ð¿¡¼­ »ïÃà¾ÐÃà½ÃÇèÀ» ¼öÇàÇÏ¿©, ºÒÆ÷È­Åä¿¡ ¹ÌÄ¡´Â ¿µÇâÀ» °ËÅäÇÏ¿´´Ù. ±× °á°ú, Ãʱ⠼®¼ÇÀÌ Å¬¼ö·Ï µ¿ÀÏ ÃຯÇü·ü¿¡ ´ëÇÑ Àü´Ü°­µµ°¡ Ä¿Áö°í üÀûº¯Çü·üÀÌ ÀÛ°Ô ³ªÅ¸³µ´Ù. ±×·¯³ª, ±¸¼Ó¾Ð¿¡ ÀÇÇÑ Ã¼Àûº¯Çü·ü ¹× ¹è¼ö·®ÀÇ º¯È­´Â ÀÛ°Ô ³ªÅ¸³µÀ¸¸ç, ±¸¼Ó¾Ð º¸´Ù´Â Ãʱ⠼®¼Ç¿¡ ´õ ÀÇÁ¸Çϰí ÀÖ´Ù´Â »ç½ÇÀ» ¾Ë¾Ò´Ù.
It has been recognized that the behaviour of unsaturated soil plays an important role in geomechanics. However, up to now, only a few experimental data are available for the technical difficulties related to both volume changes and suction measurements. In this study, the volume changes of unsaturated compacted silty soil were monitored with proximeter during various triaxial compression tests, which gave a realistic estimation in the volume changes of unsaturated soil sample. From the test results, the behaviours of wetting-induced collapses are observed during the drainage/water absorption tests. Under exhausted-drained conditions during shearing, the shear strength increases with an increasing initial suction. On the other hand, the volume changes become small with an increase in the initial suction. And, the volumetric strain during shearing is independent of the confining pressure.
 
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Exhausted-drained condition;Proximeter;Suction;Triaxial compression test;Unsaturated silt;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.24, no.1, 2008³â, pp.25-35
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200810737054144)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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