|
|
|
Çѱ¹Áö¹Ý°øÇÐȸ / v.25, no.5, 2009³â, pp.75-86
|
¿ëÇØµÈ ¼Ò±ÝÀÇ °í°áÈ¿¡ µû¸¥ ź¼ºÆÄ Ư¼º
( Elastic Wave Characteristics According to Cementation of Dissolved Salt ) |
| ¾ö¿ëÈÆ;Âä²ÎÈË;º¯¿ëÈÆ;ÀÌÁ¾¼·; °í·Á´ëÇб³ °ÇÃà.»çȸȯ°æ°øÇкÎ;°í·Á´ëÇб³ °ÇÃà.»çȸȯ°æ°øÇкÎ;°í·Á´ëÇб³ °ÇÃà.»çȸȯ°æ°øÇкÎ;°í·Á´ëÇб³ °ÇÃà.»çȸȯ°æ°øÇкÎ;
|
|
|
 |
|
| |
| ÃÊ ·Ï |
| °øÇÐÀû °üÁ¡¿¡¼ ¿ëÇØ°¡´ÉÇÑ °¡Àå ÈçÇÑ Àç·áÀÎ ¼Ò±ÝÀº °í°áÈ ÀÛ¿ë¿¡ ÀÖ¾î¼ ¿ªÇÐÀû °Åµ¿¿¡ Å« ¿µÇâÀ» ¹ÌÄ£´Ù. ÀÌ·¯ÇÑ ÀÚ¿¬Àû Çö»óÀ» Á¶»çÇϱâ À§ÇÏ¿© ¿ëÇØµÇÁö ¾Ê´Â Àç·áÀÎ ±Û¶ó½ººñÁî¿Í ¼Ò±Ý¹°À» È¥ÇÕÇÏ¿© ½Ã·á¸¦ Á¶¼ºÇÑ ÈÄ ¿ÀºìÀ» ÀÌ¿ëÇÏ¿© Æ÷ȵµ¸¦ º¯È½ÃÄѰ¡¸é¼ ½ÇÇèÀ» ¼öÇàÇÏ¿´´Ù. ÀÔÀÚÅ©±â°¡ 0.26, 0.50, 1.29mmÀÎ 3Á¾·ùÀÇ ±Û¶ó½ººñÁî¿Í 0.0, 0.1, 0.2, 0.5, 1.0, 2.0MÀÇ ¼Ò±Ý¹°¿¡ ´ëÇÏ¿© °¢°¢ÀÇ ½Ã·á¸¦ Á¶¼º ÈÄ º¥´õ ¿¤¸®¸ÕÆ®¿Í ÇÇ¿¡Á¶ µð½ºÅ© ¿¤¸®¸ÕÆ®¸¦ ÀÌ¿ëÇÏ¿© Àü´ÜÆÄ¿Í ¾ÐÃàÆÄ¸¦ ÃøÁ¤ÇÏ¿´´Ù ¼Ò±Ý¿¡ ÀÇÇÑ °í°áÈ ¹ß»ý¿¡¼ Àü´ÜÆÄ¿Í ¾ÐÃàÆÄ ¼Óµµ ¸ðµÎ Æ÷ȵµ¿¡ µû¸¥ ¼¼°¡Áö ´Ü°è¸¦ º¸¿©ÁÖ¾ú´Ù: 1) Æ÷Â÷µµ°¡ $100%{sim}90%$ÀÎ ±¸°£À¸·Î Àü´ÜÆÄÀÇ ¼Óµµ´Â Áõ°¡ÇÏ°í ¾ÐÃàÆÄÀÇ ¼Óµµ´Â °¨¼ÒÇÑ´Ù; 2) Æ÷ȵµ°¡ $90%{sim}10%$ÀÎ ±¸°£À¸·Î Àü´ÜÆÄ¿Í ¾ÐÃàÆÄÀÇ ¼Óµµ¿¡ Å« º¯È°¡ ¾øÆÄ; 3) Æ÷ȵµ°¡ $10%{sim}0%$ÀÎ ±¸°£À¸·Î Àü´ÜÆÄ ¹× ¾ÐÃàÆÄ´Â Å« º¯È¸¦ º¸ÀδÙ. ¶ÇÇÑ, Àü´ÜÆÄÀÇ °øÁøÁ֯ļö´Â Àü´ÜÆÄÀÇ ¼Óµµ º¯È¾ç»ó°ú ºñ½ÁÇÑ °æÇâÀ» º¸¿´´Ù. º» ¿¬±¸´Â ¿ëÇØµÈ ¼Ò±ÝÀÇ °í°áÈ¿¡ µû¸¥ Áö¹ÝÀç·áµéÀÇ Åº¼ºÆÄ Ư¼ºÀÇ ÀǹÌÀÖ´Â °æÇâÀ» º¸¿©ÁØ´Ù. |
|
| Salt, one of the most common soluble materials in engineering soil, may have an effect on mechanical behaviors of soils under its cementation process. In order to investigate this natural phenomenon, non-soluble material by using glass beads is mixed with salt electrolyte and cemented by using oven to evaporate water. Three different sizes of glass bead particles, 0.26, 0.5, and 1.29 mm, with different salt concentration, 0, 0.1, 0.2, 0.5, 1.0, and 2.0M, are explored by using P- and S-waves, excited by bender elements and piezo disk elemets, respectively. The velocities of the P-wave and S-wave of the particulate medium cemented by salt show three stages with the degree of saturation: 1) S-wave velocities increase while P-wave velocities reduce with degree of saturation changing from 100% to 90%; 2) Both velocities are stable with degree of saturation varying from 90% to 10%; 3) The velocities change enormously when the specimens are nearly dry with degree of saturation from 10% to 0%. Besides, the resonance frequencies of S-wave show similar stages to the S-wave velocities. This study demonstrates meaningful trends of elastic wave characteristics of geo-materials according to the cementation of dissolved salt. |
| |
| Ű¿öµå |
| Cementation;Compression wave;Resonant frequency;Share wave;Stiffness; |
| |
|
|
 |
|
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.25, no.5, 2009³â, pp.75-86
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200921140046740)
¾ð¾î : Çѱ¹¾î |
|
| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
|
|
|
|
|
|