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Çѱ¹Áö¹Ý°øÇÐȸ / v.19, no.6, 2003³â, pp.31-38
»ý¼®È¸¿Í È­ÇР÷°¡Á¦ È¥ÇÕÅä¿¡ ´ëÇÑ È²»ê¿°ÀÇ ¿µÇâ
( Sulphate Effects on Lime and Chemical Additives Stabilized Soils )
¹Î´ö±â;Ȳ±¤¸ð;Á¤ÁøÇü; ¿ï»ê´ëÇб³ °ø°ú´ëÇÐ °Ç¼³È¯°æ°øÇкÎ;°æºÏÀü¹®´ëÇÐ Åä¸ñ°ú;¿ï»ê´ëÇб³ ´ëÇпø °Ç¼³È¯°æ°øÇкÎ;
 
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µµ·ÎÀÇ ±âÃþÀç·á·Î »ç¿ëµÈ »ý¼®È¸ È¥ÇÕÅä´Â Èë ¼ÓÀÇ È²»ê¿°°ú ¹ÝÀÀÇÏ¿© ettringite, thaumasite ¹× ¼®°í¿Í °°Àº ÆØÃ¢¼º ¹ÝÀÀ»ý¼º¹°À» »ý¼ºÇϸç, µµ·Î ±Õ¿­ µîÀÇ ¾Ç¿µÇâÀ» ¹ÌÄ£´Ù. µû¶ó¼­, º» ¿¬±¸¿¡¼­´Â »ý¼®È¸¿Í ¿°È­Ä®½·, »ý¼®È¸¿Í Ȳ»êÄ®½·À» È¥ÇÕÇÏ¿© »ê¼ºÈ­µÈ ¿ì¼ö¿Í °øÀåÁö´ëÀÇ ¿À¿°µÈ Æó¼ö ¼Ó¿¡ Æ÷ÇÔµÈ È²»ê¿°¿¡ ´ëÇÑ Áö¹Ý °øÇÐÀû ¿µÇâÀ» Á¶»çÇÏ¿´´Ù. ¿¬±¸°á°ú, Ȳ»ê¿°Àº »ý¼®È¸ È¥ÇÕÅäÀÇ °­µµ ¹× ÆØÃ¢Æ¯¼ºÀ» º¯È­½ÃŰ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù. °­µµÆ¯¼ºÀº °­µµÁõ°¡°¡ Å« È­ÇР÷°¡Á¦¸¦ ÷°¡ÇÑ »ý¼®È¸ È¥ÇÕÅä¿¡ ´ëÇÏ¿©, °£±Ø¼öÀÇ pH°¡ ³·À»¼ö·Ï Àå±âÀûÀ¸·Î °­µµ°¨¼Òºñ°¡ Å« °ÍÀ¸·Î ³ªÅ¸³µÀ¸¸ç, pH°¡ ³·Àº °æ¿ì¿¡¼­´Â »ý¼®È¸ È¥ÇÕÅäÀÇ ¹ÝÀÀ¼ºÀÌ °¨¼ÒÇÏ¿© pH º¯È­°¡ ¶Ñ·ÇÇÏ°Ô ³ªÅ¸³ªÁö ¾Ê¾Ò´Ù. ÆØÃ¢Æ¯¼ºÀº °£±Ø¼öÀÇ pH°¡ ³·À»¼ö·Ï ÆØÃ¢¼ºÀÌ Áõ°¡ÇÏ¿´À¸¸ç, Ȳ»êÄ®½·À» ÷°¡ÇÑ »ý¼®È¸ È¥ÇÕÅäÀÇ ÆØÃ¢¼ºÀÌ Å« °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ÆØÃ¢¼ºÀÇ Áõ°¡¿Í Àå±â°­µµÀÇ °¨¼Ò´Â Ȳ»ê¿°°ú ¹ÝÀÀÇÏ¿© »ý¼ºµÈ ħ»óÀÇ È²»ê¿°¼öÈ­¹°ÀÇ »ý¼º¿¡ ±âÀÎÇÑ °ÍÀÓÀ» X-¼± ȸÀýºÐ¼® ¹× ÁÖ»ç ÀüÀÚ Çö¹Ì°æ °üÂûÀ» ÅëÇÏ¿© È®ÀÎÇÒ ¼ö ÀÖ¾ú´Ù.
It has been recently reported that the presence of sulphate causes abnormal volume changes in lime-stabilized soils. Volume changes in lime-stabilized soils can take place due to sulphate compounds such as ettringite. Sulphate compounds caused a variety of serious geotechnical hazards such as swelling pressure and damages to light structures and pavements. This paper discusses the influence of sulphate on the soil specimens treated with quicklime and chemical additives. The physical and mechanical characteristics were studied by means of laboratory tests. The results showed that the presence of sulphate treated soil reduced the shear strength of the lime treated soils and increased the swelling properties. SEM and XRD results indicated that the presence of sulphate producted needle-like crystals such as ettringite. Moreover, the role of needle-like crystals in specimen was probably related to the swelling properties.
 
Ű¿öµå
Calcium sulphate;Ettringite;Needle-like;Quick lime;Strength;Swelling;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.19, no.6, 2003³â, pp.31-38
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200311922147833)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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