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Çѱ¹Áö¹Ý°øÇÐȸ / v.18, no.4, 2002³â, pp.75-83
Áؼ³Å並 Ȱ¿ëÇÑ °æ·®È¥ÇÕÅäÀÇ ¿ªÇÐÀû Ư¼º ¿¬±¸
( Mechanical Characteristics of Light-weighted Soils Using Dredged Soils )
À±±æ¸²;±èº´Å¹; Çѱ¹Çؾ翬±¸¿ø, ¿¬¾ÈÇ׸¸°øÇבּ¸º»ºÎ;Çѱ¹Çؾ翬±¸¿ø, ¿¬¾ÈÇ׸¸°øÇבּ¸º»ºÎ;
 
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º» ¿¬±¸¿¡¼­´Â Áؼ³Åä, EPS ±×¸®°í °íÈ­À縦 È¥ÇÕÇÑ °æ·®È¥ÇÕÅäÀÇ ¿ªÇÐÀû Ư¼ºÀ» ÀÏÃà ¹× »ïÃà¾ÐÃà½ÃÇèÀ» ÅëÇÏ¿© °íÂûÇÏ¿´´Ù. ¿ªÇÐÀû Ư¼ºÀº ´Ù¾çÇÑ Áؼ³ÅäÀÇ Ãʱâ ÇÔ¼öºñ, EPS ÇÔÀ¯À², ½Ã¸àÆ® ÇÔÀ¯À² ±×¸®°í ¾ç»ý¾Ð·Â¿¡ ´ëÇÑ °æ·®È¥ÇÕÅäÀÇ ¾ÐÃà°­µµ¿¡ ´ëÇÏ¿© ¿¬±¸ÇÏ¿´´Ù. »ïÃà¾ÐÃà»óÅ¿¡¼­ EPS¸¦ ÇÔÀ¯ÇÑ °æ·®È¥ÇÕÅäÀÇ ¾ÐÃà°­µµ´Â À¯È¿±¸¼Ó¾Ð¿¡ ÀÇÁ¸ ÇÏÁö ¾Ê´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù. EPS ÇÔÀ¯À²ÀÌ °¨¼ÒÇÒ¼ö·Ï($A_E$<2%) ±×¸®°í ½Ã¸àÆ® ÇÔÀ¯À²ÀÌ Áõ°¡ÇÒ¼ö·Ï($A_c$>2%) »ïÃà¾ÐÃà°­µµ-º¯Çü °Åµ¿Æ¯¼ºÀº ±ØÇÑ ¾ÐÃà°­µµ¸¦ Áö³ª ±Þ°ÝÇÑ ¾ÐÃà°­µµÀÇ °¨¼Ò¸¦ º¸ÀÌ´Â ½Ã¸àÆ® È¥ÇÕÅäÀÇ ¾ÐÃà°­µµ-º¯Çü °Åµ¿Æ¯¼º°ú À¯»çÇÑ °ÍÀ¸·Î ³ªÅ¸³µ´Ù. 200kpa ÀÌ»óÀÇ ¾ÐÃà°­µµ¸¦ ¿ä±¸ÇÏ´Â °³·®Áö¹Ý¿¡ º» °æ·®È¥ÇÕÅ並 Àû¿ëÇÏ´Â °æ¿ì¿¡¼­ ÀûÀýÇÑ Áؼ³ÅäÀÇ ÃʱâÇÔ¼öºñ, EPS ÇÔÀ¯À²Àº °¢°¢ ¾à 165%~175%ÀÌ»ó ±×¸®°í 3%~4%ÀÌ»óÀ¸·Î Á¦½ÃÇÒ ¼ö°¡ ÀÖ¾ú´Ù. »ïÃà ¹× ÀÏÃà¾ÐÃà»óÅ¿¡¼­ ±ØÇÑ ¾ÐÃà°­µµ´Â ½Ã¸àÆ® ÇÔÀ¯À²ÀÌ 2%À̻󿡼­ °ÅÀÇ Áõ°¡ÇÏÁö ¾ÊÀ½À¸·Î¼­ ÇÑ°è ½Ã¸àÆ® ÇÔÀ¯À²Àº 2%·Î Á¦½ÃÇÒ ¼ö°¡ ÀÖ¾ú´Ù.
This paper is to investigate the mechanical characteristics of light-weighted soils (LWS) consisting of expanded polystyrene(EPS), dredged clays and cement by using both uniaxial and triaxial compression tests. The mechanical characteristics of the compressive strength of LWS are analysed with varying initial water contents of dredged clays, EPS ratio, cement ratio, and curing stress. In the triaxial compression state, it is found that the compressive strength of LWS containing EPS is independent on the effective confined stress. As the EPS ratio decreases($A_E$<2%) and cement ratio increases($A_c$>2%), the behavior characteristics of triaxial compressive strength-strain relationship is similar to that of cemented soil which decreases rapidly in compressive strength after ultimate compressive strength. For the applications of LWS to ground improvements which require the compressive strength of up to 200kPa, the optimized EPS ratio and initial water content of dredged clay are estimated to be 3~4% and 165~175%, respectively. Also, the ultimate compressive strength under both triaxial test and uniaxial compression states are almost constant for a cement ratio of up to 2% and then critical cement ratio of this LWS shall be 2%.
 
Ű¿öµå
Cement;Compressile strength;Dredged soil;EPS;LWS;Recycling;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.18, no.4, 2002³â, pp.75-83
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200211921341952)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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