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Çѱ¹Áö¹Ý°øÇÐȸ / v.14, no.1, 1998³â, pp.109-126
ÇöóÀֽ̾¬ È¥ÇÕÂ÷¼öÀçÀÇ Åõ¼öƯ¼º°ú ¹Ì¼¼±¸Á¶ ºÐ¼®
( Hydraulic Conductivity and Microscopic Analysis of Fly Ash Liner )
Á¤¹®°æ;¼­°æ¿ø;ÀÌ¿ë¼ö; Çѱ¹°Ç¼³±â¼ú¿¬±¸¿ø Áö¹Ý¿¬±¸½Ç;Çѱ¹°Ç¼³±â¼ú¿¬±¸¿ø Áö¹Ý¿¬±¸½Ç;;
 
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º» ³í¹®¿¡¼­´Â ÇöóÀֽ̾¬¸¦ Æó±â¹° ¸Å¸³Àå Â÷¼öÀçÀÇ °Ç¼³Àç·á·Î Ȱ¿ëÇϱâ À§ÇÑ ¹æ¾ÈÀ¸·Î ½ÇÇàÇÑ ÀÏ·ÃÀÇ ½Ç³»½ÇÇ迬±¸°á°ú¸¦ º¸°íÇÑ´Ù. Æó±â¹° ¸Å¸³Àå Â÷¼öÀçÀÇ Åõ¼ö°è¼ö ±âÁØÀ» ¸¸Á·Çϱâ À§ÇÑ ÇöóÀֽ̾¬¿Í º¥Å䳪ÀÌÆ®ÀÇ ÀûÁ¤ È¥ÇÕºñ¸¦ ±¸ÇÏ¿´´Ù. È¥ÇÕÂ÷¼öÀçÀÇ Åõ¼ö ¸ÞÄ«´ÏÁò°ú CaO°¡ Â÷¼öÃþÀÇ Åõ¼ö°è¼ö¿¡ ¹ÌÄ¡´Â ¿µÇâÀ» ´Ù¾çÇÑ Á¶°Ç¿¡ ´ëÇÑ Åõ¼ö½ÃÇè°ú X¼± ȸÀýºÐ¼®, ÀüÀÚÁÖ»çÇö¹Ì°æºÐ¼®, Ç︨ °£±ØÃøÁ¤ ¹ý, È®´ë¿µ»óºÐ¼®±â¹ý µîÀÇ ¹Ì¼¼±¸Á¶Àû Á¢±ÙÀ» ÅëÇÏ¿© ¿¬±¸ÇÏ¿´´Ù. º¥Å䳪ÀÌÆ®ÀÇ Ã·°¡¿¡ µû¶ó ÇöóÀֽ̾¬ È¥ÇÕÂ÷¼öÀçÀÇ Åõ¼ö°è¼ö´Â °¨¼ÒÇÏ¿´´Ù. ÀÌ´Â ÁÖ·Î º¥Å䳪ÀÌÆ®ÀÇ ÆØÃ¢¿¡ ÀÇÇØ °£±ØÀÌ ÃæÁøµÇ¾ú±â ¶§¹®À̸ç, ÇöóÀֽ̾¬-º¥Å䳪ÀÌÆ® °£ Æ÷Á¹¶õ ¹ÝÀÀ ¹× ±× ¿¡ µû¸¥ Åõ¼ö°è¼ö Àú°¨È¿°ú´Â ½ÃÇè¿¡ »ç¿ëµÈ ±¹³» ÇöóÀֽ̾¬ÀÇ CaO¼ººÐÀÌ Àû°í $SiO_2$ ¹ÝÀÀ¼ºÀÌ ³·¾Æ Å©Áö ¾ÊÀº °ÍÀ¸·Î ³ªÅ¸³µ´Ù. È¥ÇÕÂ÷¼öÀç¿¡¼­ ±¸¼º¹°Áú°£ È­ÇйÝÀÀÀÇ È¿°ú¸¦ ³ôÀÌ·Á ÀÎÀ§ÀûÀ¸·Î ¼®È¸¸¦ ÷°¡ÇÏ°í ½ÃÇàÇÑ ½ÇÇè°á°ú¿¡ ÀÇÇϸé È¥ÇÕÂ÷¼öÀç¿¡¼­ ±¸¼º¼ººÐ°£ È­ÇйÝÀÀ¼º ¹× ±×¿¡ µû¸¥ Åõ¼ö°è¼ö¿¡ ¹ÌÄ¡´Â ¿µÇâÀº ±¸¼º¼ººÐÀÇ ¿ÜÇüÀû ÃÑ·®º¸´Ù´Â ±¸¼º¼ººÐÀÇ ÇüÅÂ¿Í È°¼ºµµ¿¡ µû¶ó Å©°Ô Á¿ìµÇ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù.
The use of fly ash as a contaminant barrier material was studied. Mixing ratio of fly ash to bentonite to meet the requirements for landfill liners was determined. The hydraulic behavior exhibited by the fly ash-bentonite liner and the effects of CaO were investigated through hydraulic conductivity tests under various conditions and microscopic analyses including XRD, SEM, helium porosimetry, and image analysis. The hydraulic conductivity of compacted fly ash decreased with the addition of bentonite, which was due mainly to the expanding of bentonite and partly to the filling of voids by chemical reaction products among constituents of the artificial liner. Because of insufficient CaO content, and rich in content but low-reactive $SiO_2$ contained in the fly ashes used, pozzolanic reaction and resulting effects in the artificial liner were not significant. The reactions among constituting materials and their resulting effects on hydraulic conductivity were controlled not by the apparent amounts of each constituent, but by reaction activities of the materials in the artificial liner.
 
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Fly ash;Bentonite;Lime;Industrial waste;Hydraulic conductivity;Landfill liner;SEM;XRD;porosimetry;Image analysis;
 
Çѱ¹Áö¹Ý°øÇÐȸÁö:Áö¹Ý / v.14, no.1, 1998³â, pp.109-126
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-215X
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199811920447946)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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