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Çѱ¹µµ·ÎÇÐȸ / v.6, no.4, 2004³â, pp.109-121
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Çü»óºñ ¹× °ñÀçÀÇ Á¾·ù¿¡ µû¸¥ ÄÜÅ©¸®Æ® ½ÃÆíÀÇ °ÇÁ¶¼öÃàÆ¯¼º ¿¬±¸
( Drying Shrinkage of Concretes according to Different Volume-Surface Ratios and Aggregate Types ) |
| ¾ç¼ºÃ¶;¾È³²½Ä;ÃÖµ¿¿í;°½Â¹Î; È«ÀÍ´ëÇб³ °ÇÃà°øÇаú;È«ÀÍ´ëÇб³ °ÇÃà°øÇаú;ÇѰæ´ëÇб³ °ÇÃà°øÇаú;È«ÀÍ´ëÇб³ °ÇÃà°øÇаú;
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| º» ¿¬±¸´Â Çѱ¹Çü Æ÷Àå¼³°è¹ý °úÁ¦ÀÇ ÀÏȯÀ¸·Î ¼öÇàµÈ ÄÜÅ©¸®Æ®½½·¡ºêÀÇ °ÇÁ¶¼öÃàÆ¯¼º¿¡ ´ëÇÑ ¿¬±¸·Î¼ Çü»óºñ ¹× ±½Àº °ñÀçÀÇ Á¾·ù¸¦ ´Þ¸®ÇØ ÇöÀç±îÁö 252Àϰ£ ¼öÇàµÈ ½ÇÇè°á°úÀÌ´Ù. ½ÇÁ¦ Æ÷Àå¿ë ÄÜÅ©¸®Æ® ½½·¡ºêÀÇ Çü»óºñ¿¡ Á¢±ÙÇϱâ À§ÇÑ ¹æ¾ÈÀ¸·Î ½ÃÆí ÀϺΠ¸éÀÇ ¼öºÐ Áõ¹ßÀ» ¸·±â À§ÇØ ÀϺΠ¸é¿¡ 3Áß ÄÚÆÃ Ã³¸®¿Í ·¦ 󸮸¦ ÇÏ¿´´Ù. ¿¹ºñ½ÇÇè°á°ú º» ½ÇÇè¿¡¼ äÅÃÇÑ ¼öºÐ¹æÁö ÄÚÆÃ Ã³¸®°¡ 3´Þ Á¤µµ±îÁö´Â ½Å·Ú¼ºÀÌ ÀÖÀ½À» ¾Ë ¼ö ÀÖ¾ú´Ù. µ¿ÀÏÇÑ Çü»óºñ¿¡¼ »ç¾ÏÀ» »ç¿ëÇÑ ÄÜÅ©¸®Æ® ½ÃÆíÀÇ °ÇÁ¶¼öÃàÀÌ ¼®È¸¾ÏÀÎ °æ¿ìº¸´Ù Çü»óºñ¿¡ µû¶ó 1.32$sim$1.80¹è Å©°Ô ÃøÁ¤µÇ¾ú´Ù. ÃøÁ¤µÈ °ÇÁ¶¼öÃà º¯Çü·üÀ» ±âÁ¸ÀÇ ACI¿Í CEB-FIPÀÇ °ÇÁ¶¼öÃà ¸ðµ¨½Ä°ú ºñ±³ÇÑ °á°ú µÎ ½Ä ¸ðµÎ °ú¼ÒÆò°¡µÊÀÌ È®ÀεǾú´Ù. ÃÖÁ¾ÀûÀ¸·Î Àç·É ¹× Çü»óºñ µîÀ» °í·ÁÇÑ ´ÙÁß ºñ¼±Çü ȸ±ÍºÐ¼®À» ÅëÇØ º» ½ÇÇè¿¡ ÀûÇÕÇÑ ÄÜÅ©¸®Æ®½ÃÆíÀÇ °ÇÁ¶¼öÃà ¸ðµ¨½ÄÀ» Á¦½ÃÇÏ¿´´Ù. |
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| This study was performed to investigate the characteristics of drying shrinkage for concrete slabs as a project for Korean pavement design procedure. According to the volume-surface ratios and aggregate types, the experiments have been executed for 252 days. In order to simulate the volume-surface ratio of a real concrete pavement slab, three-layer epoxy coating and wrapping were used to prevent the evaporation at the part of specimen surfaces. As a result of preliminary test, coating and wrapping method was identified as reliable for three months. According to the volume-surface ratio, the drying shrinkage of the concrete specimen using sandstone was measured 1.32 to 1.8 times higher than that of the limestone specimen. Comparing to the measured drying shrinkage strains and established ACI and CEB-FIP model equations, it turned out that those model equations were underestimated. Finally, considering the age and volume-surface ratios, the prediction equations of the drying shrinkage of concrete specimen were proposed through a multiple nonlinear regression analysis. |
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| °ÇÁ¶¼öÃà;º¯Çü·ü;¸ðµ¨½Ä;Çü»óºñ;±½Àº °ñÀçÀÇ Á¾·ù;drying shrinkage;strains;volume-surface ratios;aggregate types; |
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Çѱ¹µµ·ÎÇÐȸ³í¹®Áý / v.6, no.4, 2004³â, pp.109-121
Çѱ¹µµ·ÎÇÐȸ
ISSN : 1738-7159
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200415637517238)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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