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¼öÈ¿ ¹× ¾ÐÃà°µµ¸¦ °í·ÁÇÑ ¿ä¼ÒÈ¥ÀÔ ÄÜÅ©¸®Æ®ÀÇ ÀûÁ¤ ¹èÇÕ¼³°è / A Study on Mixing Design of Urea Concrete considering Hydration Heat and Compressive Strength / 17. ¼öÈ¿/Ãʱâ°Åµ¿ |
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±è¿ë¹ü(Kim, Yong Bum) ; ±èÇпµ(Kim, Hak Young) ; ¼ÈÖ¿Ï(Seo, Hwi Wan) ; ¹è¿¬±â(Bae, Yeon Gi) ; Á¶½ÂÈ£(Cho, Seung Ho) ; Á¤¶õ(Chung, Lan) |
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Çѱ¹ÄÜÅ©¸®Æ®ÇÐȸ 2015 º½ Çмú´ëȸ ³í¹®Áý, Vol.27 No.1 (2015-05) |
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½ÃÀÛÆäÀÌÁö(681) ÃÑÆäÀÌÁö(2) |
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º» ¿¬±¸¿¡¼´Â ¸Å½ºÄÜÅ©¸®Æ® ±Õ¿¹ß»ýÀÇ ÁÖ¿øÀÎÀ» Á߽ɺΠ¼öÈ¿ ´©Àû°ú ÀÌ¿¡ µû¸¥ ¿ÂµµÀÀ·Â¿¡ ÀÇÇÑ °ÍÀ¸·Î ÀνÄÇϰí, Èí¿¹ÝÀÀÀÌ ¶Ù¾î³ ¿ä¼Ò(Urea)¸¦ ÄÜÅ©¸®Æ® È¥ÈÀç·á·Î °ËÅäÇÏ¿´´Ù. ¹ÙÀδõ ´ëºñ15% È¥ÀÔµÈ ¿ä¼Ò´Â ±¤¹°Áú È¥ÈÀç ´Ù·®Ä¡È¯¿¡ ºñÇØ ¼öȹ߿ Áö¿¬¼º´ÉÀ» ³ªÅ¸³ÂÀ¸³ª, Ãʱâ 3Àϰµµ°¡ OPC´ëºñ 17MPa °¡·® ÀúÇϵǾî Â÷ÈÄ 91ÀÏ ÀÌ»óÀÇ Àå±â°µµ °ËÅä°¡ ÇÊ¿äÇÒ °ÍÀ¸·Î ÆÇ´ÜµÈ´Ù. |
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In this study, The main cause of the mass concrete cracks is perceived by center part accumulation of heat of hydration and temperature stress, Urea of outstanding endothermic reaction was examined to the concrete admixture. Of binder when it was mixed with 15% Urea figured the hydration heat delay performance compared to the mineral admixture massive substitution. Because the early 3 days strength is reduced approximately 17MPa compared to OPC, Review of long-age strength of concrete is required for more than 91 days. |