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Çѱ¹Áö¹Ý°øÇÐȸ / v.18, no.4, 2002³â, pp.33-43
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( A Study on the Optimal Mixture Ratio for Stabilization of Surface Layer on Ultra-soft Marine Clay )
õº´½Ä;°í°æÈ¯;±èÁøÃá; ÇѾç´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú;»ï¼ºÁß°ø¾÷(ÁÖ) Åä¸ñ»ç¾÷º»ºÎ;(ÁÖ)Çѱ¹Áö¿ÀÅØ;
 
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ÃÖ±Ù ¿¬¾ÈÁö¿ª¿¡¼­ÀÇ ´ëÇü°Ç¼³°ø»ç Áõ°¡·Î Áؼ³¿¬¾àÅäÀÇ ¾ÈÁ¤È­ °ø¹ýÁßÀÇ ÇϳªÀΠǥÃþ°íȭ󸮰ø¹ýÀÇ Àû¿ë»ç·Ê´Â ´Ã¾î³ª´Â ¹Ý¸é ÀÌ¿¡ ´ëÇÑ ¿¬±¸ÀÚ·á´Â ¹ÌºñÇÑ ½ÇÁ¤ÀÌ´Ù. º» ¿¬±¸´Â ÃÊ¿¬¾à ÇØ¼ºÁ¡Åä¿Í °íÈ­ÀçÀÇ Æ¯¼ºÀ» ÆÄ¾ÇÇϰí, ½ÃÇèÀ» ½Ç½ÃÇÏ¿© ¹ÝÀÀÇ¥¸é ºÐ¼®¿¡ ÀÇÇÏ¿© ÃÖÀû¹èÇÕºñ¸¦ µµÃâÇϸç, À̸¦ ÇöÀå½ÃÇè½Ã°øÀ» ÅëÇØ °ËÁõÇÏ´Â µ¥¿¡ ±× ¸ñÀûÀÌ ÀÖ´Ù. À̸¦ À§ÇØ ÀûÁ¤ °íÈ­Àç ¹× ´ë»óÅ並 ¼±Á¤ÇÏ¿© ½ÇÇè°èȹ¹ý¿¡ ÀÇÇØ Á¦¹Ý ½Ç³»½ÃÇèÀ» ½Ç½ÃÇÏ¿© °³·®È¿°ú¿¡ ¿µÇâÀ» ÁÖ´Â ÀÎÀÚ¿Í Á¤µµ¸¦ Æò°¡Çϰí, °íÈ­Àç ¿ø·áÀÇ ¹èÇÕºñ¿Í ÀÏÃà¾ÐÃà°­µµ¿ÍÀÇ °ü°è½ÄÀ» µµÃâÇÏ¿´´Ù. ¶ÇÇÑ µµÃâÇÑ °ü°è½ÄÀ» ÇöÀå½ÃÇèÀ» ÅëÇØ ÇöÀå¿¡ÀÇ Àû¿ë¼ºÀ» °ËÁõÇÏ¿´´Ù. ½ÃÇè°á°ú ±¹³»¿¡¼­ ÁÖ·Î ¾²¿©Áö´Â °íÈ­Àç ¿ø·á(½Ã¸àÆ®, ½½·¡±×ºÐ¸», ÇöóÀֽ̾¬, ¹«±â¿°·ù, ¾ÆÀ©, ¼®°íµî)µéÀÌ ¾ÐÃà°­µµ¹ßÇö¿¡ ¹ÌÄ¡´Â ¿µÇâÀ» ¾Ë ¼ö ÀÖ¾úÀ¸¸ç, Åë°èºÐ¼®À» ÅëÇÏ¿© ¼Ò¿ä°­µµ¸¦ ¸¸Á·ÇÏ´Â °íÈ­ÀçÀÇ ÃÖÀû¹èÇÕºñ¸¦ µµÃâÇÒ ¼ö ÀÖ¾ú´Ù. ¶ÇÇÑ ÇöÀå½ÃÇè½Ã°øÀ» ÅëÇØ ½Ã¸àÆ®¿Í °íÈ­Àç¿¡ ÀÇÇÑ Áö¹Ý°³·®È¿°ú¸¦ ºñ±³.È®ÀÎÇÏ¿´À¸¸ç, ÀÌ´Â ÃÊ¿¬¾à ÇØ¼ºÁ¡ÅäÀÇ Ç¥Ãþ°íȭó¸®ÀÇ ¼³°è ¹× ½Ã°øÀÚ·á·Î Ȱ¿ë°¡´ÉÇÒ °ÍÀ¸·Î ÆÇ´ÜµÈ´Ù.
Recently, as large constructions on the coast increase, an application of a surface layer stabilization method which is one of the improvement methods for dredged soft clay has increased. However, there are few studies about this. The purpose of this study is clarifying characteristics of ultra-soft marine clay and hardening agent. Also, it is verifying an optimal mixture ratio of hardening agent through the laboratory tests according to designed experiments and proving by statistical analysis and pilot tests. Laboratory tests were performed with proper hardening agent and test soil in accordance with the design of experiments. Regression equations between hardening agents materials and unconfined compressive strength were derived from the tests. The applicability of regression equations were also verified by pilot tests. From the test results, it was found that hardening agent materials(cement, slag, fly-ash, inorganic salts, arwin, gypsum etc.) have some effect upon compressive strength. The optimal mixture ratio which satisfies the required compressive strength was derived from the statistical analysis. The effect of ground improvement by cements and hardening agents was confirmed through the pilot tests. This study will suggest data for design or construction criteria of stabilization of surface layer on ultra-soft marine clay.
 
Ű¿öµå
Hardening agent;Marine clay;Optimal mixture ratio;Stabilization;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.18, no.4, 2002³â, pp.33-43
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200211921341911)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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