¶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

Çѱ¹°ÇÃà½Ã°øÇÐȸ / v.10, no.5, 2010³â, pp.95-102
ȥȭÁ¦ Á¾·ùº°·Î Á¦Á¶µÈ ÄÜÅ©¸®Æ®ÀÇ Àç È¥ÇÕ Å¸¼³½Ã Ư¼º ºÐ¼®
( Analysis of the Characteristics of Manufactured Concrete, according to the Type of Admixture used when Remixing and Placing it )
·ùÇö±â;½Å»ó¿ë; ;;
 
ÃÊ ·Ï
ÃÖ±Ù µé¾î °æÁ¦¼ºÀå°ú »ê¾÷±â¹Ý ½Ã¼³ÀÇ È®Ãæ µîÀ¸·Î ÀÎÇÏ¿© Ÿ»çÀÇ ·¹¹ÌÄÜÀ» Á¾Á¾ È¥¿ë ÇÏ´Â °æ¿ì°¡ Àִµ¥, »ç¿ëµÇ´Â ȥȭÀç·áÀÇ °æ¿ì Á¦Á¶È¸»çº°·Î È­ÇмººÐ ¹× ÷°¡·®ÀÇ Â÷À̰¡ ÀÖÀ¸¹Ç·Î ¼­·Î ´Ù¸¥ ·¹¹ÌÄÜ Á¦Á¶È¸»çÀÇ ÄÜÅ©¸®Æ®°¡ È¥ÇյǾúÀ» ½Ã¿¡ °­µµ ÀúÇÏ ¹× ÀÀ°áÁö¿¬, ³»±¸¼º ÀúÇÏ µîÀ¸·Î ÀÎÇÑ ÄÜÅ©¸®Æ®ÀÇ ¼º´É ÀúÇÏ¿äÀÎÀÌ ¹ß»ýµÈ´Ù. ȥȭÁ¦ Á¾·ùº°·Î Á¦Á¶µÈ ÄÜÅ©¸®Æ®ÀÇ Àç È¥ÇÕ Å¸¼³½ÃÀÇ ¼º´É ºÐ¼®À» ÇÑ °á°ú·Î¼­ ¸ÕÀú ½½·³ÇÁ´Â ¸ðµç ÄÜÅ©¸®Æ®¿¡¼­ ¸ñÇ¥½½·³ÇÁ °ªÀ» ¸¸Á·ÇÏ¿´À¸¸ç, °ø±â·® ¿ª½Ã ¸ðµç ÄÜÅ©¸®Æ®¿¡¼­ ¸ñÇ¥ °ø±â·®À» ¸¸Á· ÇÏ¿´´Ù. ºí¸®µù·® ¹× ºí¸®µù·üÀÇ °æ¿ì Àü¹ÝÀûÀ¸·Î À¯±â»ê°è¿Í °°ÀÌ È¥ÇÕµÈ ÄÜÅ©¸®Æ®¿¡¼­ ³ôÀº ºí¸®µù·®À» ³ªÅ¸³»¾ú´Ù. Á¶±âÀç·ÉÀÇ ¾ÐÃà°­µµ´Â PlainÀÇ ³ªÇÁÅ»¸°°è¿¡¼­ °¡Àå Å« °­µµ¹ßÇö °æÇâÀ» ³ªÅ¸³»¾ú°í, Àç È¥ÇÕ ÄÜÅ©¸®Æ®¿¡¼­´Â 5:5ÀÇ À¯±â»ê°è¿Í ³ªÇÁÅ»¸°°è¿¡¼­ °¡Àå Å« ¾ÐÃà °­µµ ¹ßÇö °æÇâÀ» ³ªÅ¸³»¾ú´Ù. Ç¥ÁØÀç·ÉÀÇ °æ¿ì 5:5ÀÇ Àç È¥ÇÕ ÄÜÅ©¸®Æ® Áß ³ªÇÁÅ»¸°°è+¸®±×´Ñ°è¸¦ È¥ÇÕÇÏ¿´À» ¶§ °¡Àå Å« °­µµ ¹ßÇö °æÇâÀ» ³ªÅ¸³»¾ú´Ù. ÀÎÀå°­µµ ¿ª½Ã ¾ÐÃà°­µµ¿Í À¯»çÇÑ °æÇâÀ» ³ªÅ¸³»¾ú´Ù. ±æÀ̺¯È­À²Àº Àü¹ÝÀûÀ¸·Î Plain¿¡ ºñÇÏ¿© Å« °ÇÁ¶¼öÃà °æÇâÀ» ³ªÅ¸³»¾úÀ¸¸ç, Àç È¥ÇÕÄÜÅ©¸®Æ® 7:3ÀÇ °æ¿ì¿¡ °¡Àå Å« °ÇÁ¶¼öÃà°æÇâÀ» ³ªÅ¸³»¾ú´Ù. SEM»çÁø ºÐ¼®°á°ú ÀçÈ¥ÇÕ ÄÜÅ©¸®Æ®¿¡¼­ ´õ ¸¹Àº ¹Ì¼¼°ø±ØµéÀÌ ¹ß°ßµÇ¾ú´Ù. °á°úÀûÀ¸·Î ÇÑ Á¾·ùÀÇ ·¹¹ÌÄÜÀ» ÀÌ¿ëÇÏ¿© Ÿ¼³ÇÏ¿´À» °æ¿ì º¸´Ù È¥ÇÕ»ç¿ë ÇÏ¿´À» °æ¿ì ÀÀ°áÁö¿¬ ¹× ÃʱⰭµµ ÀúÇÏÇö»óÀÌ ³ªÅ¸³ª°í, ´õ Å« °ÇÁ¶ ¼öÃà °æÇâÀ» ³ªÅ¸³»¾î ÀϺΠȥȭÁ¦¸¦ ¼±º°ÇÏ¿© È¥ÇÕ »ç¿ëÇÏ´Â °æ¿ì¸¦ Á¦¿ÜÇϰí´Â °¡´ÉÇÑ µ¿ÀÏÇÑ È¥È­Á¦¸¦ »ç¿ëÇØ¾ß ÇÒ °ÍÀ¸·Î ÆÇ´ÜµÈ´Ù.
In recent years, the demand for the development of high quality and cost effective materials, as well as the competition to ensure a diverse and sufficient amount of ready-mixed concrete, has been increasing rapidly. In this experiment, concretes made with different admixtures are blended with each other in different combinations and ratios, in order to identify potential problems. The first test was a slump level test, in which all of the concretes met the required numbers, as they also did in the test for air content. Plain organic acid concrete scored the highest in bleeding amount, but organic acid mix in general showed a similar outcome. In the early measurement of compressive strength, plain naphthalene concrete was the strongest. Of the blends, the 5:5 mix of organic acid and naphthalene was the strongest. In the standard measurement, the 5:5 mix of naphthalene and lignin was the strongest. Tensile strength tests revealed similar results. Length change rate proved to be greater in blended concrete than in plain concrete, and dry shrinkage rate was highest in the 7:3 ratio blends. Through SEM photo analysis, it was confirmed that the 7:3 ratio blends contained more micro-voids. In conclusion, with the exception of a specific few combinations, it was found that the blending of different types of concrete is undesirable due to the delayed coagulation time as well as the early decrease in strength.
 
Ű¿öµå
ȥȭÁ¦;ÀçÈ¥ÇÕ ÄÜÅ©¸®Æ®;¾ÐÃà°­µµ;Admixtures;Reblended concrete;Compressive strength;
 
Çѱ¹°ÇÃà½Ã°øÇÐȸÁö / v.10, no.5, 2010³â, pp.95-102
Çѱ¹°ÇÃà½Ã°øÇÐȸ
ISSN : 1598-2033
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO201032654094433)
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¿