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Çѱ¹Áö¹Ý°øÇÐȸ / v.27, no.9, 2011³â, pp.47-53
°íÈ­Áؼ³ÅäÀÇ ¿ªÇÐÀû Ư¼º¿¡ ´ëÇÑ ¿°ºÐÀÇ ¿µÇâ
( Effect of Salinity on Mechanical Characteristics of Stabilized Dredged Soil )
±èÀ±ÅÂ; ºÎ°æ´ëÇб³ ÇØ¾ç°øÇаú;
 
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Ç×·ÎÀ¯Áö Áؼ³°ú ÇØ¾È°Ç¼³ ÇöÀå¿¡¼­ äÃëµÈ ÇØ¾çÁؼ³Åä´Â ÀϹÝÀûÀ¸·Î Á¡Åä ¼ººÐ ³»¿¡ ´Ù·®ÀÇ ¿°ºÐÀ» ÇÔÀ¯Çϰí ÀÖ´Ù. º» ³í¹®Àº ¿°ºÐÀÌ Æ÷ÇÔµÈ °íÈ­Áؼ³Åä(S-SDS)¿Í ¿°ºÐÀÌ Æ÷ÇÔµÇÁö ¾ÊÀº °íÈ­Áؼ³Åä(N-SDS)ÀÇ ¿ªÇÐÀû Ư¼º¿¡ ´ëÇÑ ¿°ºÐÀÇ ¿µÇâÀ» ºÐ¼®ÇÏ¿´´Ù. À̸¦ À§ÇØ ¿°ºÐÀÌ Æ÷ÇÔµÈ Áؼ³Åä¿Í ¿°ºÐÀÌ Æ÷ÇÔµÇÁö ¾ÊÀº Áؼ³Åä¿¡ °¢°¢ µ¿ÀÏÇÑ ¾çÀÇ ½Ã¸àÆ®¸¦ È¥ÇÕÇÏ¿© ¿©·¯ °³ÀÇ ½ÃÆíÀ» Á¦ÀÛÇÏ¿´´Ù. 7ÀÏ È¤Àº 28ÀÏ ¾ç»ýµÈ N-SDS¿Í S-SDS ½ÃÆí¿¡ ´ëÇÏ¿© ÀüÀÚÇö¹Ì°æ ºÐ¼®, ÀÏÃà¾ÐÃà½ÃÇè ¹× ±¸¼Ó¾ÐÃà½ÃÇèÀ» ¼öÇàÇÔÀ¸·Î½á °íÈ­Áؼ³ÅäÀÇ ¹Ì¼¼ È뱸Á¶, °­µµ ¹× ¾ÐÃà Æ¯¼ºÀ» ºñ±³ ¹× ºÐ¼®ÇÏ¿´´Ù. ½ÇÇè°á°ú Á¡Åä¿¡ Æ÷ÇÔµÈ ¿°ºÐÀº °íÈ­Áؼ³ÅäÀÇ ¹Ì¼¼ È뱸Á¶ Çü¼º »Ó¸¸ ¾Æ´Ï¶ó °íÈ­ÅäÀÇ °­µµ¹ßÇö¿¡ ¿µÇâÀ» ÁÖ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ¶ÇÇÑ S-SDSÀÇ ¾ÐÃàÁö¼ö¿Í ÆØÃ¢Áö¼ö´Â N-SDS º¸´Ù Å©°Ô ³ª¿Ô´Ù. À̰ÍÀ¸·ÎºÎÅÍ ¿°ºÐÀº °íÈ­ÅäÀÇ ¾ÐÃ༺À» Áõ°¡½ÃŲ´Ù´Â °ÍÀ» ¾Ë ¼ö ÀÖ´Ù. ¿°ºÐÀº °í°áÈ­µÈ Áؼ³ÅäÀÇ °­µµ¹ßÇö ¹× ¾ÐÃ༺¿¡ ¾Ç¿µÇâÀ» ÁÖ¾ú´Ù.
Marine dredged soils taken from navigation channels or construction sites of coastal area usually have a lot of salt in pores of clayey soils. This paper investigates effect of salt on mechanical characteristics of non-salt and salt-rich stabilized dredged soil. The stabilized dredged soil (SDS) consisted of dredged soil and cement. Several pairs of SDS with non-salt and salt-rich dredged soils, noted as N-SDS and S-SDS, respectively, were prepared to compare their strengths and compressibility characteristics. The microstructures, strength and compressibility characteristics of N-SDS and S-SDS specimens at 7 and 28 days of curing time were evaluated using scanning electronic microscope (SEM), unconfined compression test, and oedometer test. It was found that salt concentration of clayey soil affected not only the formation of soil structure but also the strength development of mixture. The compression index and swelling index of S-SDS were also greater than those of N-SDS, which indicated that the compressibility of mixture increased due to salt concentration. Salinity in clayey soil had a negative effect on the strength development and compressibility characteristics of stabilized dredged soils.
 
Ű¿öµå
Compressibility;Dredged soil;Salinity;Strength development;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.27, no.9, 2011³â, pp.47-53
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO201107654735959)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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