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Çѱ¹Áö¹Ý°øÇÐȸ / v.24, no.1, 2008³â, pp.91-99
³«»ç¹ýÀ¸·Î Á¶¼ºµÈ ´ëÇü ¼®°í °í°á½Ã·áÀÇ ±ÕÁú¼º
( Uniformity of Large Gypsum-cemented Specimens Fabricated by Air Pluviation Method )
À̹®ÁÖ;ÃÖ¼º±Ù;ÃßÇö¿í;Á¶¿ë¼ø;ÀÌ¿ìÁø; °í·Á´ëÇб³ °ÇÃà.»çȸȯ°æ°øÇаú;°í·Á´ëÇб³ °ÇÃà.»çȸȯ°æ°øÇаú;°í·Á´ëÇб³ °ÇÃà.»çȸȯ°æ°øÇаú;°í·Á´ëÇб³ °ÇÃà.»çȸȯ°æ°øÇаú;°í·Á´ëÇб³ °ÇÃà.»çȸȯ°æ°øÇаú;
 
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º» ¿¬±¸¿¡¼­´Â ´ëÇü è¹ö¿¡ ³«»ç¹ý¿¡ ÀÇÇÑ °í°á½Ã·á Á¶¼º½Ã ¸ð·¡¿Í °í°áÀ¯¹ßÁ¦ÀÎ ¼®°íÀÇ Àç·áºÐ¸®¸¦ ¹æÁöÇϱâ À§ÇÑ ¹æ¹ýÀ» °ËÅäÇϰí, ÄܰüÀÔ½ÃÇè, µô¶óÅä¹ÌÅÍ ½ÃÇè, º¥´õ¿¤¸®¸ÕÆ® ½ÃÇèÀ» ¼öÇàÇÏ¿© Á¶¼ºµÈ ½Ã·áÀÇ ±ÕÁú¼ºÀ» Æò°¡ÇÏ¿´´Ù. ½Ã·á ³«»ç½Ã ¹ß»ýÇÏ´Â Àç·áºÐ¸®¸¦ ÃÖ¼ÒÈ­Çϱâ À§ÇØ ¸ð·¡ Áß·®ºñ 0.5%ÀÇ ¹°·Î ¸ð·¡½Ã·á Ç¥¸éÀ» ½ÀÀ±½Ã۰í, ¼®°í¸¦ ¸ð·¡Ç¥¸é¿¡ °ñ°í·ç ÈíÂø½ÃŲ ÈÄ ½Ã·á¸¦ ³«»çÇÏ¿´´Ù. ÀϹÝÀûÀÎ ¼¼¸³ºÐ Æ÷ÇÔ ¸ð·¡½Ã·á¿Í °°ÀÌ °ÇÁ¶»óÅ ¸ð·¡¿Í ¼®°íÀÇ È¥Çս÷á´Â ¼®°íÇÔÀ¯À²ÀÌ Áõ°¡ÇÒ¼ö·Ï ÃÖ´ë/ÃÖ¼Ò °£±Øºñ°¡ °¨¼ÒÇÏ¿´Áö¸¸, ½ÀÀ±»óÅ ¸ð·¡¿Í ¼®°íÀÇ È¥Çս÷á´Â ¼®°íÇÔÀ¯À²ÀÌ ÀûÀº ÃʱâÀÇ ÃÖ´ë/ÃÖ¼Ò °£±Øºñ°¡ Áõ°¡ÇÏ´Â °æÇâÀ» º¸¿´´Ù. Á¶¼ºµÈ ½Ã·áÀÇ ¿¬Á÷¹æÇ⠷м±´ÜÀúÇ×, µô¶óÅä¹ÌÅÍ ¼öÆòÀÀ·ÂÁö¼ö, µô¶óÅä¹ÌÅÍ °è¼ö, Àç·áÁö¼ö, ±×¸®°í ¼öÆò¹æÇâ Àü´ÜÆÄ¼Óµµ´Â ¸Å¿ì ±ÕµîÇÏ°Ô ÃøÁ¤µÇ¾úÀ¸¸ç, ÀÌ·Î½á ½Ã·áÀÇ ±ÕÁú¼ºÀÌ ¸Å¿ì ¾çÈ£ÇÑ °ÍÀ¸·Î Æò°¡µÈ´Ù.
The method to prepare the large cemented sand specimen for calibration chamber test by air-pluviation is investigated in this study. The uniformity of cemented specimen is evaluated by performing the CPTs, DMTs, and bender element tests in the calibration chamber. The sand particles, pre-wetted with 0.5% water content, are mixed with gypsum to provide the homogeneous coating of gypsum particles on the grain surface. It was shown that the pre-wetting of particle surface is effective to minimize the potential for segregation between sands and gypsum during air-pluviation. It was observed that the extreme void ratios ($e_{max};and;e_{mix}$) of the mixture of pre-wetted sand and gypsum powder increase at lower gypsum content while those of the mixture of dry sand and gypsum decrease with increasing gypsum content. It was also shown from the test results that large cemented specimens reconstituted in calibration chamber by rainer system are quite uniform in vertical and horizontal directions.
 
Ű¿öµå
Extreme void ratio;Large cemented specimen;Particle segregation;Uniformity;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.24, no.1, 2008³â, pp.91-99
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200810737054477)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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