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Çѱ¹µµ·ÎÇÐȸ / v.2, no.2, 2000³â, pp.149-161
ÇöÀå°øÁøÁÖ½ÃÇèÀ» ÀÌ¿ëÇÑ º¸Á¶±âÃþ Àç·áÀÇ ´ëü $M_R$ ½ÃÇè¹ý
( Alternative Method of Determining Resilient Modulus of Subbase Materials Using Free-Free Resonant Column Test )
±Ç±âö;±èµ¿¼ö; µ¿ÀÇ´ëÇб³ Åä¸ñ°øÇаú;Çѱ¹°úÇбâ¼ú¿ø Åä¸ñ°øÇаú;
 
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ȸº¹Åº¼º°è¼ö$(M_R)$·Î Ç¥ÇöµÇ´Â º¸Á¶±âÃþ Àç·áÀÇ Åº¼º°è¼ö´Â ¿¬¼º Æ÷ÀåüÀÇ ¿ªÇÐÀû ¼³°è¿¡ ´ë´ÜÈ÷ Áß¿äÇÑ ¹°¼ºÄ¡ÀÌ´Ù. ±×·¯³ª ¹Ýº¹ÀçÇÏ½Ä $M_R$ ½ÃÇèÀ» ÀÏ»óÀû ½ÃÇèÀ¸·Î Àû¿ëÇϱ⿡´Â ³Ê¹« ½ÃÇè°úÁ¤ÀÌ º¹ÀâÇϰí, °í°¡À̸ç, ¸¹Àº ½ÃÇè½Ã°£À» ÇÊ¿ä·Î ÇÑ´Ù. º» ¿¬±¸¿¡¼­´Â º¸Á¶±âÃþ Àç·áÀÇ º¯ÇüƯ¼ºÀ» °í·ÁÇÏ¿© ÇöÀå°øÁøÁÖ½ÃÇè(EF-RC)À» ÀÌ¿ëÇÑ ´ëü $M_R$ ½ÃÇè¹ýÀ» °³¹ßÇÏ¿´´Ù. º¸Á¶±âÃþ Àç·áÀÇ º¯ÇüƯ¼º Æò°¡¸¦ À§ÇÏ¿© º¯Çü·ü Å©±â ¹× Æò±ÕÁÖÀÀ·ÂÀÇ Åº¼º°è¼ö¿¡ ´ëÇÑ ¿µÇâÀ» Á¶»çÇÏ¿´´Ù. Á¦¾ÈÇÑ ´ëü $M_R$ ½ÃÇè¹ýÀ¸·Î °áÁ¤µÈ ź¼º°è¼ö¿Í ¹Ýº¹ÀçÇÏ½Ä $M_R$ ½ÃÇè¿¡¼­ °áÁ¤µÈ ȸº¹Åº¼º°è¼ö´Â ¼­·Î Àß ÀÏÄ¡ÇÏ¿© Á¦¾ÈµÈ ±â¹ýÀÇ È¿¿ë¼ºÀ» È®ÀÎÇÏ¿´´Ù.
The stiffness of the subbase materials is represented by the resilient modulus, $M_R$, which are very important properties in the mechanistic design of flexible pavement system. However, the cyclic $M_R$ testing method is too complex, expensive, and time consuming to be applicable on a production basis. In this study, the alternative $M_R$ testing technique for subbase materials was developed using a free-free resonant column (FF-RC) test considering deformational characteristics of subbase materials. To estimate the deformational characteristics of subbase materials, effects of strain amplitude and mean effective stress on modulus of subbase materials were investigated. The $M_R$ values determined by alternative testing procedures matched well with those determined by standard $M_R$ test, showing the capability of the proposed methods being used in determining $M_R$ values.
 
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ȸº¹Åº¼º°è¼ö;´ëü MR ½ÃÇè¹ý;º¸Á¶±âÃþ Àç·á;ÇöÀå°øÁøÁÖ½ÃÇè;resilient modulus(;alternative ;subbase materials;free-free resonant column test;
 
Çѱ¹µµ·ÎÇÐȸ³í¹®Áý / v.2, no.2, 2000³â, pp.149-161
Çѱ¹µµ·ÎÇÐȸ
ISSN : 1738-7159
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200015637533607)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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