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Çѱ¹Áö¹Ý°øÇÐȸ / v.23, no.10, 2007³â, pp.5-11
¿­Àû ¹æ¹ýÀ» ÀÌ¿ëÇÑ ¿¬Á÷¹è¼öÀç ÁÖº¯ÀÇ ¾Ð¹ÐƯ¼º ¿¬±¸
( Improvement of Consolidation Characteristics around PVD Using the Thermal Method )
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º» ³í¹®¿¡¼­´Â ÀÚü Á¦ÀÛÇÑ ¿¬Á÷¹è¼öÀç ³»ºÎÀÇ ¿­Àü´ë ¼³Ä¡ À¯¹«¿¡ µû¶ó ¼ÒÇü ¿øÇü¼¿°ú ´ëÇü ¾Ð¹Ð½ÇÇèÀåÄ¡¸¦ ÀÌ¿ëÇÏ¿© ¹è¼öÀç ÁÖº¯ÀÇ ¾Ð¹Ð Á¤µµ¸¦ Æò°¡ÇÏ¿´´Ù. µ¿ÆÇÀç·áÀÎ ¿­Àü´ë·Î Á¦ÀÛÇÑ ¿¬Á÷¹è¼öÀç´Â ¼ÒÇü ¿øÇü¼¿ ÀåÄ¡¿¡ Àû¿ëÇÏ¿´°í, ´ëÇü ¾Ð¹Ð½ÇÇèÀåÄ¡¿¡´Â ¿¬¼º ¿ÍÀ̾î·Î ¸¸µç ¿­Àü´ë¸¦ ¹è¼öÀç ³»ºÎ¿¡ ¼³Ä¡ÇÏ¿© ½ÇÇèÀ» °¢°¢ ¼öÇàÇÏ¿´´Ù. ½ÇÇè°á°ú, Èë ½Ã·á´Â ¿­ÀÇ ¿µÇâÀ¸·Î üÀû ¼öÃàÀÌ ¹ß»ýÇÏ¿©, ¿­À» °¡Çϸé ħÇϰ¡ Ä¿Áö°í ¾Ð¹Ð¼Óµµ´Â ´õ ºü¸£°Ô ÁøÇàµÇ¾ú´Ù. ƯÈ÷, ºÒ±³¶õ ½Ã·áÀÇ °æ¿ì, ¹è¼öÀç ³»ºÎ¿¡ ¿­À» °¡ÇÏÁö ¾Ê¾ÒÀ» ¶§¿Í °¡ÇßÀ» ¶§ÀÇ ¾Ð¹Ð°è¼ö $C_h$´Â °¢°¢ 3.45¿Í $3.83m^2/yr$, $K_h/K_s$ÀÇ ºñ´Â °¢°¢ 3°ú 2¸¦ ³ªÅ¸³»¾ú´Ù. ¶ÇÇÑ À缺Çü ½Ã·áÀÇ °æ¿ì, ¿­À» °¡ÇÏÁö ¾Ê¾ÒÀ» ¶§¿Í °¡ÇßÀ» ¶§ÀÇ ¾Ð¹Ð°è¼ö $C_h$´Â °¢°¢ 2.1°ú $2.5m^2/yr$, $K_h/K_s$ÀÇ ºñ´Â °¢°¢ 1.75¿Í 1.5¸¦ ³ªÅ¸³»¾ú´Ù.
This paper is to investigate the removal of the smear at elevated temperatures. This study utilized both small cylinder cell and large consolidometer apparatus to investigate the combination of PVD with heat and without heat. Two types of heaters are used in this study. The heater drain made of copper tube is used for all tests except large consolidometer and flexible wire heater is used for large consolidometer. Specimens demonstrated volume contraction upon heat and without heat. This contraction is dependent on temperature magnitude. When the specimen is heated, the magnitude of settlements is higher and rate of consolidation is faster. After treatment using PVD combined without heat and with heat for undisturbed specimens the $C_h$ values obtained were $3.45m^2/yr$ and $3.83m^2/yr$, respectively, from $3.2m^2/yr$ before treatment. The $K_h/K_s$ ratios were 3 for the specimen without heat and 2 for the specimen with heat. Similarly, in reconstituted specimens without heat and with heat, the $C_h$ values were $2.1m^2/yr$ and $2.5m^2/yr$ with $K_h/K_s$ ratios of 1.75 and 1.5, respectively.
 
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Coefficient of consolidation;Heater drain;Thermal method;Undisturbed specimen;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.23, no.10, 2007³â, pp.5-11
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200703534283554)
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