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Çѱ¹°ÇÃà½Ã°øÇÐȸ / v.11, no.5, 2011³â, pp.426-434
ȥȭÀ縦 »ç¿ëÇÑ ÄÜÅ©¸®Æ® ±¸Á¶Ã¼ÀÇ ºñÆÄ±« ½ÃÇè¿¡ ÀÇÇÑ Àå±âÀç·É ¾ÐÃà°­µµ ÃßÁ¤
( Estimation of Long-term Aging Compressive Strength Through Non-Destructive Testing of Concrete Structure Using Mineral Admixtures )
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ÃÖ±Ù, ȥȭÀ縦 »ç¿ëÇÑ ÄÜÅ©¸®Æ®´Â ¸¹Àº ½ÇÇè½Ç¿¡¼­ ÄÜÅ©¸®Æ®¿¡ ¿¬±¸µÇ°í ÀÖÀ¸¸ç ½ÇÁ¦·Î °Ç¼³ ÇöÀå¿¡ Àû¿ëµÇ°í ÀÖ´Ù. ÇÏÁö¸¸ ȥȭÀ縦 »ç¿ëÇÑ ÄÜÅ©¸®Æ®ÀÇ ¾ÐÃà °­µµÀÇ ÃßÁ¤¿¡ ´ëÇÑ Ã¼°èÀûÀÎ ¿¬±¸ °á°ú°¡ Á¸ÀçÇÏÁö ¾Ê±â ¶§¹®¿¡ ÀϺ»ÀÇ º¸Åë °­µµ ÄÜÅ©¸®Æ®¿¡ ´ëÇÑ Á¦¾È½ÄÀ» »ç¿ëÇϰí ÀÖ´Ù. ±×·¡¼­ ȥȭÀ縦 »ç¿ëÇÑ ÄÜÅ©¸®Æ®ÀÇ ¾ÐÃà °­µµÀÇ ÃßÁ¤¿¡ ´ëÇÑ ºñÆÄ±« ½ÃÇè½ÄÀ» Á¦¾ÈÇÏ´Â °ÍÀÌ ÇʼöÀûÀÔ´Ï´Ù. µû¶ó¼­ º» ¿¬±¸´Â ȥȭÀç »ç¿ëÇÑ ÄÜÅ©¸®Æ®¿¡ ´ëÇÏ¿© ¿øÁÖÇü °ø½Ãü¿Í ÄÚ¾îäÃë¿ë ±¸Á¶Ã¼¸¦ Á¦ÀÛÇÏ¿© ºñÆÄ±« ½ÃÇè°ú ÆÄ±« ½ÃÇèÀ» ÅëÇØ Àå±â Àç·É(4³â)¿¡ ´ëÇÑ °­µµ ÃßÁ¤½ÄÀ» Á¦¾ÈÇÑ °ÍÀ¸·Î, ±× °á·ÐÀº ´ÙÀ½°ú °°´Ù. ±âÁ¸ Á¦¾È½Ä°ú º» ¿¬±¸ ÃßÁ¤½ÄÀÇ ¿ÀÂ÷À²À» ºñ±³ÇÑ °á°ú, Àç·Éº°·Î ´Ù¼Ò Â÷ÀÌ´Â ÀÖÁö¸¸ ¹Ý¹ß °æµµ¹ý¿¡ ÀÇÇÑ ±âÁ¸ Á¦¾È½Äº¸´Ù´Â 0.3 %~115.0 % Á¤µµ, ÃÊÀ½ÆÄ¼Óµµ¹ý¿¡ ÀÇÇÑ ±âÁ¸Á¦¾È½Äº¸´Ù´Â 0.2 %~22.8 % Á¤µµ, º¹ÇÕ¹ý¿¡ ÀÇÇÑ ±âÁ¸Á¦¾È½Äº¸´Ù´Â 0.5 %~102.3 % Á¤µµ·Î ±âÁ¸ÀÇ Á¦¾È½Äº¸´Ù º» ¿¬±¸ÀÇ ÃßÁ¤½Ä ¿ÀÂ÷À²ÀÌ °¨¼ÒÇÏ¿© ȥȭÀ縦 »ç¿ëÇÑ ÄÜÅ©¸®Æ®¿¡ »ç¿ëÀÌ ¹Ù¶÷Á÷ÇÒ °ÍÀ¸·Î ÆÇ´ÜµÈ´Ù.
Recently, the use of mineral admixtures in concrete has been studied in many laboratories, and been applied in the field. But the non-destructive testing equation proposed in Japan for normal strength concrete has been used to determine compressive strength, because there has been a lack of systematic research on the compressive strength of concrete using mineral admixtures. For this reason, it is essential to suggest a non-destructive testing equation to estimate the compressive strength of concrete using mineral admixtures. Therefore, this study made a cylindrical specimen and core tube specimen of concrete using a mineral admixture, and suggested a strength estimation of long-term age (4 years) through non-destructive and destructive tests. The results of the research are as follows. Comparing error rates between conventional suggested equations and this estimated equation shows some differences by age, but the error rate of this study was reduced to 0.3 %~115.0 % compared to conventional equations by re-bound hammering, 0.2 %~22.8 % by the ultrasound velocity method and 0.5 %~102.3 % by complex method. Accordingly, it is judged to be suitable for assessing the compressive strength of concretes using mineral admixtures.
 
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ȥȭÀç;ºñÆÄ±«½ÃÇè;¾ÐÃà°­µµ ÃßÁ¤;mineral admixtures;non-destructive testing;compressive strength estimation;
 
Çѱ¹°ÇÃà½Ã°øÇÐȸÁö / v.11, no.5, 2011³â, pp.426-434
Çѱ¹°ÇÃà½Ã°øÇÐȸ
ISSN : 1598-2033
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO201132833920351)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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