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¹ÙÅҾֽà ¹× Áؼ³Åä ±â¹Ý Àΰø °æ·®°ñÀç ÄÜÅ©¸®Æ®ÀÇ ¿ªÇÐÀû Ư¼º / Mechanical Properties of Lightweight Aggregate Concrete Using Expanded Bottom Ash and Dredged Soil Granules |
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À̰æÈ£(Lee, Kyung-Ho) ; ¾ç±ÙÇõ(Yang, Keun-Hyeok) |
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´ëÇѰÇÃàÇÐȸ³í¹®Áý, Vol.37 No.02 (2021-02) |
| ÆäÀÌÁö |
½ÃÀÛÆäÀÌÁö(189) ÃÑÆäÀÌÁö(8) |
| ÁÖÁ¦¾î |
°æ·®°ñÀç ÄÜÅ©¸®Æ®; ¹°-½Ã¸àÆ® ºñ; ¿ªÇÐÀû Ư¼º; ¹ÙÅÒ¾Ö½Ã; Áؼ³Åä ; Lightweight aggregate concrete; Water-to-cement ratio; Mechanical properties; Bottom ash; Dredged soil |
| ¿ä¾à1 |
ÀÌ ¿¬±¸¿¡¼´Â ¹ÙÅҾֽà ¹× Áؼ³Åä ±â¹Ý Àΰø °æ·®°ñÀç ÄÜÅ©¸®Æ®(lightweight aggregate concrete, LWAC)ÀÇ ¿ªÇÐÀû Ư¼º¿¡ ´ëÇÑ Ãµ¿¬¸ð·¡ È¥ÀÔ ¹× W/CÀÇ ¿µÇâÀ» Æò°¡Çϱâ À§ÇØ ÃÑ 10 ¹èÇÕÀÇ ÄÜÅ©¸®Æ® ½ÇÇèÀ» ¼öÇàÇÏ¿´´Ù. ¹èÇÕ½ÇÇèÀº Àü°æ·® ÄÜÅ©¸®Æ®(ÀܰñÀç ¹× ±½Àº°ñÀç·Î °æ·®°ñÀ縦 »ç¿ë) ¸ð·¡°æ·®ÄÜÅ©¸®Æ®(±½Àº°ñÀç´Â °æ·®°ñÀ縦 »ç¿ëÇϰí ÀܰñÀç·Î¼ °æ·®°ñÀ縦 50% »ç¿ë)ÀÇ 2°³ÀÇ ±×·ìÀ¸·Î ±¸ºÐÇÏ¿´À¸¸ç, °¢ ±×·ì¿¡¼ ¹°-½Ã¸àÆ® ºñ´Â 30~50%ÀÇ ¹üÀ§¿¡¼ 5% ´ÜÀ§·Î º¯È½ÃÄ×´Ù. ½ÇÇè°á°ú, ¹ÙÅҾֽà ¹× Áؼ³Åä ±â¹Ý °æ·®°ñÀç ÄÜÅ©¸®Æ®´Â º¸ÅëÁß·® ÄÜÅ©¸®Æ® ´ëºñ Àå±â°µµ¹ßÇöÀ²ÀÌ ³ô°Ô ³ªÅ¸³µ´Ù. ¸ð·¡°æ·® ÄÜÅ©¸®Æ®´Â Àü°æ·®ÄÜÅ©¸®Æ® ´ëºñ ¾ÐÃà °µµ, ÀÎÀå °µµ, ź¼º °è¼ö, ÆÄ±«°è¼ö, Àü´Ü¸¶Âû°µµ ¹× ö±Ù°úÀÇ ºÎÂø°µµ°¡ °¢°¢ 42 %, 35 %, 35 %, 52 %, 33 % ¹× 3.5% ³ô°Ô ³ªÅ¸³µ´Ù. ¶ÇÇÑ, KBC 2016¿¡¼´Â °æ·®°ñÀç ÄÜÅ©¸®Æ®ÀÇ Åº¼º°è¼ö ¹× ÆÄ±«°è¼ö¿¡ ´ëÇØ °ú¼ÒÆò°¡Çϰí ÀÖ¾ú´Ù. |
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This study aims to examine the effect of water-to-cement ratios (W/C) on the mechanical properties of lightweight aggregate concrete (LWAC) prepared using artificially expanded bottom ash and dredged soil granules. For the all-LWAC and sand-LWAC (with sand content of 50% for replacing lightweight fine aggregates) groups, W/C varied from 30% to 50% at an interval of 5%. From the comparison of the normalized compressive strength development, a higher long-term strength ratios were observed in LWAC when compared with the common values of the conventional normal-weight concrete. The compressive strength, tensile strength, modulus of elasticity and rupture, shear friction strength, and bond strength with a reinforcing bar measured in sand-LWAC were higher by approximately 42%, 35%, 35%, 52%, 33%, and 3.5%, respectively, than those of the companion all-LWAC. The modulus of elasticity and rupture of LWAC could be estimated conservatively using the design equations specified in KBC 2016. |