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Çѱ¹Áö¹Ý°øÇÐȸ / v.22, no.8, 2006³â, pp.99-106
°í·Î ¼ö¼â½½·¡±×ÀÇ °æÈ­°¡ ¾×»óÈ­ °­µµ¿¡ ¹ÌÄ¡´Â ¿µÇâ
( Effect of Hardening of Granulated Blast Furnace Slag on the Liquefaction Strength )
¹é¿øÁø; ÀϺ» ¾ß¸¶±¸Ä¡´ëÇÐ °øÇкΠ»çȸ°Ç¼³°øÇаú;
 
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º» ¿¬±¸´Â ¾×»óÈ­¿¡ ´ëÇÑ °í·Î ¼ö¼â½½·¡±×ÀÇ ÀáÀç¼ö°æ¼ºÀÇ ¿µÇâÀ» ¸íÈ®È÷ Á¶»çÇϱâ À§ÇØ °í·Î ¼ö¼â½½·¡±×¸¦ °í¿Â¾ËÄ®¸® ¼ö(¼ö»êÈ­Ä®½· ÷°¡, pH=12, ¼ö¿Â ¾à $80^{circ}C$)·Î ¾ç»ýÇÑ ÈÄ¿¡ ¹Ýº¹ ¹× Á¤Àû »ïÃà¾ÐÃà½ÃÇèÀ» ½Ç½ÃÇÏ¿´´Ù. »ïÃà½ÃÇèÀ» ÅëÇØ ¾ò¾îÁø °á°ú´Â ÀϺ»ÀÇ Ç¥ÁØ»çÀÎ Toyoura sand¿Í õ¿¬»çÀÎ Genkai sandÀÇ °á°ú¿Í ºñ±³ÇÏ¿´´Ù. ½ÃÇè°á°ú °í·Î¼ö¼â½½·¡±×ÀÇ ¾×»óÈ­ °­µµ´Â ¾ç»ý±â°£ÀÇ Áõ°¡¿Í ´õºÒ¾î ÀáÀç¼ö°æ¼º¿¡ ÀÇÇÑ °æÈ­¿¡ ÀÇÇØ Áõ°¡ÇÔÀ» ¾Ë¾Ò´Ù. ¶ÇÇÑ, ´ã¼öÁ¶°Ç¿¡¼­ 189Àϰ£ ¾ç»ýÇÑ »ó´ë¹Ðµµ 50%¹× 80%ÀÇ °í·Î ¼ö¼â½½·¡±×¿¡¼­ ÀáÀç¼ö°æ¼ºÀÇ ¹ßÇö¿¡ ÀÇÇØ Á¡Âø·ÂÀÌ ³ªÅ¸³­´Ù. ´õ¿íÀÌ °æÈ­°úÁ¤¿¡ À־ °í·Î ¼ö¼â½½·¡±×ÀÇ ¾×»óÈ­ °­µµ´Â ¹Ýº¹Àü´ÜȽ¼ö n=20ȸ¿¡¼­ÀÇ ¹Ýº¹ÀÀ·Âºñ $R_{20}$°ú Á¡Âø·Â $C_{d}$»çÀÌ¿¡ ¼±Çü °ü°è°¡ °üÂûµÇ¾ú´Ù. ¶ÇÇÑ, °í¿Â ¾ËÄ®¸® ¼ö·Î ¾ç»ýµÈ °í·Î ¼ö¼â½½·¡±×¿¡ ´ëÇÑ ¾×»óÈ­ °­µµ´Â Á¡Âø·ÂÀ̳ª ÀÏÃà¾ÐÃà°­µµ¿¡ ÀÇÇØ ¿¹ÃøÀÌ °¡´ÉÇÔÀ» ¾Ë¾Ò´Ù.
In the present study, in order to clarify the effects of latent hydraulic property of granulated blast furnace slag (GBF slag) on the liquefaction, GBF slag was cured in the high temperature alkali water (adding the calcium hydroxide, pH=12, water temperature is about $30^{circ}C$), and then the cyclic and the static tri-axial compression tests were carried out. Then the results were compared with those for Japanese standard sand of Toyoura sand and natural sand of Genkai sand. From the test results, it is clarified that the liquefaction strength of the GBF slag increases with the increase of the curing period by the hardening due to the latent hydraulic property. It is also shown that GBF slag with Dr=50% and 80% which was cured for 189 days in the fresh-water shows cohesion due to developing of latent hydraulic property. In addition, as for the liquefaction strength of GBFS during the hardening process, a linear relation between the cyclic stress ratio $R_{20}$ at the number of stress cycles Nc=20 and cohesion $C_{d}$ was observed. It is also clarified that the liquefaction strength for cured GBF slag in the high temperature alkali water is predicted by the cohesive strength or the unconfined compressive strength.
 
Ű¿öµå
Granulated blast furnace slag;Hardening process;Latent hydraulic property;Liquefaction strength;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.22, no.8, 2006³â, pp.99-106
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200634741580808)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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