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Çѱ¹Áö¹Ý°øÇÐȸ / v.23, no.12, 2007³â, pp.75-82
°í°á¸ð·¡ÀÇ °­µµÆ¯¼º¿¡ ´ëÇÑ ¿µÇâ¿äÀÎ ºÐ¼®
( Analysis of Influencing Factors on Strength Characteristics of Cemented Sand )
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 °í°á½Ã »óÀ籸¼Ó¾Ð(${sigma_{sit}}'$), »ó´ë¹Ðµµ, ±×¸®°í ÀÔÀÚÆ¯¼ºÀÌ °í°á¸ð·¡ÀÇ Á¡Âø·Â°ú °í°á°áÇÕ ÆÄ±«±¸¼Ó¾Ð(${p_i}'_{(BP)}$)¿¡ ¹ÌÄ¡´Â ¿µÇâÀ» °ËÅäÇϱâ À§ÇÏ¿© 400kPa ±îÁöÀÇ ±¸¼Ó¾ÐÀ¸·Î ¾Ð¹ÐµÈ °í°á¸ð·¡¿¡ ´ëÇÑ ¹è¼öÀü´Ü½ÃÇèÀ» ½Ç½ÃÇÏ¿´´Ù. ½ÃÇè°á°ú µ¿ÀÏ »ó´ë¹Ðµµ¿Í ¼®°íÇÔÀ¯À²·Î °í°áµÈ ¸ð·¡ÀÇ Á¡Âø·Â°ú ${p_i}'_{(BP)}$´Â ${sigma_{sit}}'$¿¡ °ü°è¾øÀÌ µ¿ÀÏÇÏ°Ô °áÁ¤µÇ¾î, ${sigma_{sit}}'$ÀÌ °í°á¸ð·¡ÀÇ °­µµÆ¯¼º¿¡ ¹ÌÄ¡´Â ¿µÇâÀº »ó´ëÀûÀ¸·Î ÀûÀº °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ¹Ý¸é, »ó´ë¹Ðµµ³ª °í°áÁ¤µµ°¡ Áõ°¡ÇÒ¼ö·Ï °í°á¸ð·¡ÀÇ Á¡Âø·Â°ú ${p_i}'_{(BP)}$´Â Áõ°¡ÇÏ¿´À¸¸ç, »ó´ë¹Ðµµ°¡ Á¡Âø·Â¿¡ ¹ÌÄ¡´Â ¿µÇ⺸´Ù ${p_i}'_{(BP)}$¿¡ ¹ÌÄ¡´Â ¿µÇâÀÌ ´õ Å« °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ¶ÇÇÑ ÀÔÀÚÆ¯¼ºÀÌ ´Ù¸¥ ¼¼ Á¾·ùÀÇ ¸ð·¡½Ã·á¿¡ ´ëÇÑ °á°ú¸¦ ºÐ¼®ÇÑ °á°ú, ½Ã·á ÀÔ°æÀÌ ÀÛÀ»¼ö·Ï ÀÔÀÚ»çÀÌÀÇ Á¢ÃËÁ¡ÀÌ Áõ°¡ÇÏ¿© Á¡Âø·Â°ú ${p_i}'_{(BP)}$°¡ Å©°Ô °áÁ¤µÇ¾ú´Ù.
The effects of sitting pressure(${sigma_{sit}}'$) during cementation, relative density and particle characteristics on the cohesion intercept due to cementation bonds and the confining stress inducing the breakage of cementation bonds ${p_i}'_{(BP)}$ are investigated from drained shear tests on the cemented sands confined under the isotropic stress up to 400 kPa. It was observed from the experimental results that the cemented sands, with the same density and gypsum content, show similar values of cohesion intercept and ${p_i}'_{(BP)}$, regardless of ${sigma_{sit}}'$. Although the cohesion intercept and ${p_i}'_{(BP)}$ of cemented sands are observed to increase with increasing relative density and cementation level, the relative density appears to have more significant effect on ${p_i}'_{(BP)}$ than the cohesion intercept does. From analysing the test results of three different sands, it is shown that the smaller the particle size the larger the cohesion intercept and ${p_i}'_{(BP)}$, due to the increased number of contact points between the particles.
 
Ű¿öµå
Breaking point;Cementation;Cohesion intercept;Particle characteristics;Relative density;Sitting pressure;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.23, no.12, 2007³â, pp.75-82
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200706414474036)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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