¶óÆæÆ®¦¢Ä«Æä¦¢ºí·Î±×¦¢´õº¸±â
¾ÆÄ«µ¥¹Ì Ȩ ¸í»çƯ°­ ´ëÇבּ¸½Ç޹æ Á¶°æ½Ç¹« µ¿¿µ»ó°­ÀÇ Çѱ¹ÀÇ ÀüÅëÁ¤¿ø ÇÐȸº° ³í¹®
ÇÐȸº° ³í¹®

Çѱ¹°Ç¼³°ü¸®ÇÐȸ
Çѱ¹°ÇÃà½Ã°øÇÐȸ
Çѱ¹µµ·ÎÇÐȸ
Çѱ¹»ý¹°È¯°æÁ¶ÀýÇÐȸ
Çѱ¹»ýÅÂÇÐȸ
Çѱ¹¼öÀÚ¿øÇÐȸ
Çѱ¹½Ä¹°ÇÐȸ
Çѱ¹½Ç³»µðÀÚÀÎÇÐȸ
Çѱ¹ÀÚ¿ø½Ä¹°ÇÐȸ
Çѱ¹ÀܵðÇÐȸ
Çѱ¹Á¶°æÇÐȸ
Çѱ¹Áö¹Ý°øÇÐȸ
Çѱ¹ÇÏõȣ¼öÇÐȸ
Çѱ¹È¯°æ»ý¹°ÇÐȸ
Çѱ¹È¯°æ»ýÅÂÇÐȸ

Çѱ¹Áö¹Ý°øÇÐȸ / v.23, no.8, 2007³â, pp.159-169
¼¶À¯ÀÇ º¸°­ ÇüÅ¿¡ µû¸¥ ¼¶À¯-½Ã¸àÆ® È¥ÇÕÅäÀÇ ÀÏÃà¾ÐÃà°­µµÆ¯¼º
( Unconfined Compressive Strength of Fiber-reinforced Cemented Sands by Fiber Reinforcement Form )
¹Ú¼º½Ä;±è¿µ¼ö;ÀÌÁ¾Ãµ; ¿ø±¤´ëÇб³ °ø°ú´ëÇÐ Åä¸ñȯ°æµµ½Ã°øÇкÎ;°æºÏ´ëÇб³ °ø°ú´ëÇÐ °Ç¼³°øÇкΠÅä¸ñ°øÇаú;¿ø±¤´ëÇб³ °ø°ú´ëÇÐ Åä¸ñȯ°æµµ½Ã°øÇкÎ;
 
ÃÊ ·Ï
Ã뼺ÀûÀÎ ÆÄ±«¸¦ º¸ÀÌ´Â ½Ã¸àÆ® È¥ÇÕÅäÀÇ ¿ªÇÐÀû Ư¼ºÀ» °³¼±Çϱâ À§ÇÏ¿© ´Ü¼¶À¯¸¦ »ç¿ëÇÑ ¼¶À¯½Ã¸àÆ® È¥ÇÕÅä¿¡ °üÇÑ ¿¬±¸¸¦ ¼öÇàÇÏ¿´´Ù. ³«µ¿°­ À¯¿ª¿¡¼­ äÃëÇÑ ¸ð·¡, º¸ÅëÆ÷Ʋ·£µå½Ã¸àÆ® ±×¸®°í ÃÖ±Ù ÄÜÅ©¸®Æ®¿Í ½Ã¸àÆ® º¸°­Àç·Î ¸¹ÀÌ »ç¿ëµÇ°í ÀÖ´Â Æú¸®ºñ´Ò¾ËÄÚ¿Ã(PVA) ¼¶À¯¸¦ »ç¿ëÇÏ¿´´Ù. PVA ¼¶À¯´Â ½Ã¸àÆ®¿Í Á¢Âø¼ºÀÌ ¸Å¿ì ¿ì¼öÇÏ¸ç ºñÁßÀÌ 1.3À¸·Î ¹°º¸´Ù ¾à°£ Å« °ÍÀÌ Æ¯Â¡ÀÌ¸ç ½Ã¸àÆ® º¸°­Àç·Î »ç¿ëµÇ°í ÀÖ´Â ÀÏ¹Ý PVA ¼¶À¯º¸´Ù´Â ´Ù¼Ò Á÷°æÀÌ Å« 0.1mmÀÇ PVA ¼¶À¯¸¦ »ç¿ëÇÏ¿´´Ù. ±ú²ýÇÑ ³«µ¿°­ ¸ð·¡¿¡ ½Ã¸àÆ®¿Í ¼¶À¯¸¦ ÃÖÀûÇÔ¼öºñ·Î Àß ¼¯Àº ÈÄ 5ÃþÀ¸·Î ³ª´©¾î Ãþ´ç 55ȸ ´ÙÁüÇÏ¿© °ø½Ãü¸¦ ¸¸µç ÈÄ 7Àϰ£ ¾ç»ý½ÃÄ×´Ù. ¸ðµç °ø½ÃüÀÇ ½Ã¸àÆ® È¥ÇÕÀ²Àº 4%·Î µ¿ÀÏÇÏÁö¸¸ ¼¶À¯ÀÇ È¥ÇÕÀ§Ä¡¸¦ ´Ù¸£°Ô ½Ã·á¸¦ Á¦ÀÛÇÏ¿© ÀÏÃà¾ÐÃà½ÃÇèÀ» ½Ç½ÃÇÏ¿´´Ù. °­µµ½ÃÇè¿¡¼­ ¼¶À¯ÀÇ º¸°­ ÇüÅÂ¿Í À§Ä¡¿¡ µû¸¥ ÀÏÃà¾ÐÃà°­µµÀÇ Æ¯¼ºÀ» ºñ±³ÇÏ¿´À¸¸ç, µ¿ÀÏÇÑ ¾çÀÇ ¼¶À¯°¡ ±ÕÀÏÇÏ°Ô º¸°­µÈ °æ¿ìÀÇ ÀÏÃà¾ÐÃà°­µµ°¡ ±×·¸Áö ¾ÊÀº °æ¿ìº¸´Ù ¾à 2¹è Áõ°¡ÇÏ¿´´Ù. Ãþ´ç ¼¶À¯ È¥ÇÕÀ²ÀÌ µ¿ÀÏÇÒ °æ¿ì ¼¶À¯ º¸°­À²ÀÌ Áõ°¡ÇÔ¿¡ µû¶ó ÀÏÃà¾ÐÃà°­µµµµ Áõ°¡ÇÏ¿´À¸¸ç, ÀüÃþÀÌ º¸°­µÇ¾úÀ» ¶§ÀÇ ÀÏÃà¾ÐÃà°­µµ´Â Áß°£Ãþ¸¸ º¸°­µÈ °æ¿ìº¸´Ù 1.5¹è ÀÌ»ó °­µµ°¡ Áõ°¡ÇÏ¿´´Ù. ¼¶À¯-½Ã¸àÆ® È¥ÇÕÅä °Åµ¿¿¡¼­ ¼¶À¯ÀÇ È¥ÇÕÀ²°ú ¼¶À¯°¡ °ñ°í·ç Àß ºÐ»êµÇµµ·Ï ÇÏ´Â ¹æ¹ý ¶Ç´Â ºÐ»êÀÌ ¿ëÀÌÇÑ ¼¶À¯¸¦ ¼±ÅÃÇÏ´Â °ÍÀÌ Áß¿äÇÏ¿´´Ù.
The behavior of fiber-reinforced cemented sands (FRCS) was studied to improve a brittle failure mode observed in cemented sands. Nak-dong River sand was mixed with ordinary Portland cement and a Polyvinyl alcohol (PVA) fiber. A PVA fiber is widely used in concrete and cement reinforcement. It has a good adhesive property to cement and a specific gravity of 1.3. A PVA fiber has a diameter of 0.1 mm that is thicker than general PVA fiber for reinforced cement. Clean Nak-dong River sand, cement and fiber at optimum water content were compacted in 5 layers giving 55 blows per layer. They were cured for 7 days. Cemented sands with a cement/sand ratio of 4% were fiber-reinforced at different locations and tested for unconfined compression tests. The effect of fiber reinforcement form and distribution on strength was investigated. A specimen with evenly distributed fiber showed two times more strength than not-evenly reinforced specimen. The strength of fiber-reinforced cemented sands increases as fiber reinforcement ratio increases. A fully reinforced specimen was 1.5 times stronger than a specimen reinforced at only middle part. FRCS behavior was controlled not only by a dosage of fiber but also by fiber distribution methods or fiber types.
 
Ű¿öµå
Cemented sand;Distribution;Fiber-reinforced;Unconfined compression test;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.23, no.8, 2007³â, pp.159-169
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200734516349018)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
¸ñ·Ïº¸±â
ȸ»ç¼Ò°³ ±¤°í¾È³» ÀÌ¿ë¾à°ü °³ÀÎÁ¤º¸Ãë±Þ¹æÄ§ Ã¥ÀÓÀÇ ÇѰè¿Í ¹ýÀû°íÁö À̸ÞÀÏÁÖ¼Ò ¹«´Ü¼öÁý °ÅºÎ °í°´¼¾ÅÍ
   

ÇÏÀ§¹è³ÊÀ̵¿