26
ÄÜÅ©¸®Æ® ºÎÂø·ÂÃøÁ¤±â
- To evaluate the in-place bond strength between a repair overlay and the substrate
- To evaluate the in-place tensile strength of concrete or other materials
- To evaluate the effect of surface preparation procedures on the tensile strength of the substrate
before applying a repair material or overlay
¡Ú ÄÜÅ©¸®Æ® Ç¥¸é°ú ºÎÂø¹° »çÀÌÀÇ ÀÎÀå·ÂÀ̳ª ÄÜÅ©¸®Æ®¸¦ µ¡´í ºÎºÐ°ú ºÎÂø¹° »çÀÌÀÇ ÀÎÀå·Â
»ç¿ë¿¹ µ¿¿µ»óº¸±â
* ÄÜÅ©¸®Æ® ºÎÂø·Â Å×½ºÆ® ÀÚ·á º¸±â(CLICK)
- BOND-TEST´Â ASTM C1583¿¡ ÀÇ°ÅÇÑ ºÎÂø·Â ÃøÁ¤¿¡ È°¿ëµË´Ï´Ù.
- ÄÜÅ©¸®Æ® Ç¥¸é°ú ºÎÂø¹° »çÀÌÀÇ ÀÎÀå·ÂÀ̳ª ÄÜÅ©¸®Æ®¸¦ µ¡´í ºÎºÐ°ú ºÎÂø¹° »çÀÌÀÇ ÀÎÀå·ÂÀ» Á÷Á¢ ÈûÀ» °¡ÇØ ´ç±èÀ¸·Î¼ ÃøÁ¤ÇÏ´Â ¹æ½ÄÀÔ´Ï´Ù.
¿ëµµ
* ¿ø¸é°ú ¼ö¸®ÇÏ¿© µ¡´í ºÎºÐ »çÀÌÀÇ ºÎÂø·ÂÀ» ÃøÁ¤ÇÕ´Ï´Ù.
* ÄÜÅ©¸®Æ®³ª ´Ù¸¥ ¼ÒÀçÀÇ ÀÎÀå·ÂÀ» ÃøÁ¤ÇÕ´Ï´Ù.
* ´Ù¸¥ ¼ÒÀç µîÀ¸·Î µ¡´ë¾î ¼ö¸®Çϱâ Àü¿¡ ¿ø¸éÀÇ ÀÎÀå·Â °µµ¸¦ È®ÀÎÇÏ´Â Áغñ ÀýÂ÷¿¡ È°¿ëµË´Ï´Ù.
¿ø¸®
º» Àåºñ¸¦ È°¿ëÇÒ ¶§, µð½ºÅ©¸¦ ÃøÁ¤ÇÏ·Á´Â ÁöÁ¡ Ç¥¸é¿¡ ¹ÐÂø °íÁ¤½ÃÅ°°í, ÇÏ´ÜÀÇ °¡Àå ÁÂÃø ±×¸²Ã³·³ µð½ºÅ© ÁÖÀ§¸¦ °¦¾Æ³½ ÈÄ µð½ºÅ©¸¦ ´ç°Ü ¿Ã¸³´Ï´Ù.
BOND-TEST (a) Failure in substrate (b) Bond failure (c) Failure in overlay
º» Àåºñ¸¦ È°¿ëÇÏ¸é¼ ¹ß»ýÇÒ ¼ö ÀÖ´Â ¿À·ù·Î´Â »ó´ÜÀÇ ±×¸²°ú °°Àº °ÍµéÀÌ ÀÖ½À´Ï´Ù.
(a) ºÎÂø·ÂÀÌ ¿ø¸éÀÇ ÀÎÀå·Âº¸´Ù °ÇÏ°Ô ÃøÁ¤µÇ´Â °æ¿ìÀÔ´Ï´Ù.
(b) µ¡´í ºÎºÐ°ú ¿ø¸é »çÀÌÀÇ ºÎÂø·ÂÀÌ ÃøÁ¤µÇ´Â °æ¿ìÀÔ´Ï´Ù.
(c) ºÎÂø·ÂÀÌ µ¡´í ºÎºÐÀÇ ÀÎÀå·Âº¸´Ù °ÇÏ°Ô ÃøÁ¤µÇ´Â °æ¿ìÀÔ´Ï´Ù.
ÃøÁ¤ÇÏ´Â µ¿¾È °¡Àå Áß¿äÇÑ Á¡Àº, Àåºñ°¡ ÃøÁ¤ ÁöÁ¡À» ´ç°Ü ¿Ã¸®´Â °úÁ¤¿¡¼ µð½ºÅ©¿¡ ÀüÇØÁö´Â Èçµé¸²À» ÃÖ¼ÒÈÇØ¾ß ÇÑ´Ù´Â °ÍÀÔ´Ï´Ù. ±×·¯Áö ¾ÊÀ¸¸é ³Ê¹« ³·°Å³ª ºñÁ¤»óÀûÀÎ ÃøÁ¤°ªÀ» ¾ò°Ô µË´Ï´Ù.
(a)¿Í °°Àº °æ¿ì´Â µ¡´í ºÎºÐÀÇ ºÎÂø·ÂÀÌ ¿ø¸éÀÇ ÀÎÀå·Âº¸´Ù °ÇÏ°Ô ÃøÁ¤µÇ±â ¶§¹®¿¡ ÈçÈ÷ ¹ß»ýÇÏ°Ô µÇ´Â ¿À·ùÀÔ´Ï´Ù. ÃøÁ¤ ½ÇÆд º¹ÇÕÀûÀÎ ½Ã½ºÅÛ ¼ÓÀÇ »ç¼ÒÇÏ°í ÀÛÀº ¿À·ù¿¡¼ ½ÃÀ۵Ǹç, ¾î¶² Á¾·ùÀÇ ÃøÁ¤ ½ÇÆа¡ ³ªÅ¸³¯Áö´Â ¾î´À ´©±¸µµ ¿¹»óÇÒ ¼ö ¾øÀ½À» ÀÎÁöÇϽñ⠹ٶø´Ï´Ù. Àåºñ¸¦ µé¾î¿Ã¸®´Â ÈûÀÇ Æò±ÕÀ» °è»êÇÒ ¶§¿¡´Â µ¿ÀÏÇÑ Á¾·ùÀÇ ÃøÁ¤ ½ÇÆзΠ¾òÀº ÃøÁ¤ °á°úµé¸¸À» ´ë»óÀ¸·Î ÇØ¾ß ÇÕ´Ï´Ù.
º» ÀåºñÀÇ º»ÁúÀº ÇÑÁ¤µÈ ¿äÀÎ ºÐ¼®À» ÅëÇØ ¿¬±¸µÇ¾î ¿Ô½À´Ï´Ù.
75mm µð½ºÅ©¸¦ È°¿ëÇÏ´Â º»Ã¼ÀÇ ÃøÁ¤ ½ÇÆд 0.02~0.03mmÀÇ ¹Ì¼¼ÇÑ À̵¿À¸·Îµµ ¿¹»óµÉ ¼ö ÀÖ°í, ºÐ¸®µÇ±â Àü µð½ºÅ© ÇϺο¡ ÀüÇØÁö´Â ¸í¸ñ ¾Ð·ÂÀº ¿ø¸é ÄÜÅ©¸®Æ®ÀÇ ´ÜÃà ÀÎÀå·Âº¸´Ù 3% Á¤µµ ³·½À´Ï´Ù.
°¡º¯¼º.
75mm µð½ºÅ©¿¡ ÀÖ¾î, ¹Ýº¹ ÃøÁ¤ÀÇ º¯µ¿ °è¼ö´Â ÄÜÅ©¸®Æ®¿¡¼ 38mmÀÇ ÃÖ´ë ÃÑ »çÀÌÁîÀÇ 8~10%¿¡ À̸¨´Ï´Ù. 50mm µð½ºÅ©¿¡ ÀÖ¾î, º¯µ¿ °è¼ö´Â 14~16%ÀÔ´Ï´Ù.
BOND-TEST
ÃøÁ¤ ÀýÂ÷.
1 ÃøÁ¤ ÁöÁ¡ °áÁ¤. ÃøÁ¤ÇÒ ÁöÁ¡À» ¸ðµÎ ³ëÃâ½ÃÅ°°í ÆíÆòÇÑ ÃøÁ¤ ÁöÁ¡À» Çü¼ºÇϱâ À§Çؼ ¸¶¸§¸ð ¸ð¾çÀÇ º¼Æ®·Î °íÁ¤½ÃÅ°´Â ºÎ¼ÓÇ°À» ÀÌ¿ëÇÕ´Ï´Ù. °¡¿îµ¥ ¼ÕÀâÀÌ ºÎºÐÀº º°µµÀÇ ÈÙ ±×¶óÀδõ·Î ºÐ¸®ÇÕ´Ï´Ù. ±Ý¼Ó ºê·¯½Ã¸¦ ÀÌ¿ëÇØ Ç¥¸éÀ» °ÇÁ¶ÇÏ°Ô À¯ÁöÇÏ½Ã°í ¾î¶°ÇÑ ¸ÕÁö³ª ÀÔÀÚµµ ³²Áö ¾Êµµ·Ï ³¯·Á¹ö¸®½Ê½Ã¿À. ÈíÀÔÆÇÀº ÃøÁ¤ ÁöÁ¡ Çü¼º ºÎ¼ÓÇ°À» ¾ÈÁ¤ÈÇϴµ¥ ÀÌ¿ëµË´Ï´Ù. ÀÌ·¯ÇÑ Áغñ °úÁ¤Àº ³Ã°¢¼ö ¾øÀÌ ÁøÇàµÈ´Ù´Â Á¡À» ÀÎÁöÇϽñ⠹ٶø´Ï´Ù. 2 µð½ºÅ© ¼³Ä¡. ¿À¿°µÇÁö ¾ÊÀº µð½ºÅ©´Â ±Þ¼Ó ¾ç»ý Á¢ÂøÁ¦(GRA)¸¦ ÀÌ¿ëÇØ ÁغñµÈ ÃøÁ¤ ÁöÁ¡¿¡ ºÎÂø½Ãŵ´Ï´Ù. GRA Á¢ÂøÁ¦´Â ¿ÏÀü ¾ç»ý ½Ã 10MPaÀÇ ÀÎÀå·ÂÀ» ¹ßÈÖÇϴµ¥, ¿ÏÀü ¾ç»ý±îÁö´Â Æò»ó ¿Âµµ¿¡¼ 2~5ºÐ Á¤µµ ¼Ò¿äµË´Ï´Ù. ¾ç»ý °úÁ¤Àº GRAÀÇ µÎ ¼ººÐÀÌ È¥ÇÕµÈ ÀÛÀº °è·® ÄÅ¿¡¼ È®ÀÎÇÒ ¼ö ÀÖ½À´Ï´Ù. ÇÑ·©ÇÑ ±âÈÄ È¯°æ¿¡¼´Â, Á¢ÂøÁ¦ÀÇ ¾ç»ýÀ» ÃËÁø½ÃÅ°±â À§ÇØ ÄÜÅ©¸®Æ® Ç¥¸é°ú µð½ºÅ©¿¡ È÷Æ® °ÇÀ¸·Î °¡¿ÇØÁÝ´Ï´Ù.
3 ÆÄ¼È Äھ. ÆÄ¼È ÄھÀº ³Ã°¢¼ö¸¦ ÀÌ¿ëÇØ Ç¥¸éÀ» ¼öÁ÷ ¹æÇâÀ¸·Î °¦¾Æ³»´Â °ÍÀÔ´Ï´Ù. ºÎÂøµÈ µð½ºÅ©°¡ µå¸± ÀÛ¾÷ÀÇ °¡ÀÌµå ¿ªÇÒÀ» ÇÏ°Ô µË´Ï´Ù. (ÄھÀÇ ³»ºÎ Á÷°æÀº µð½ºÅ©ÀÇ Á÷°æº¸´Ù ¾à°£ Å®´Ï´Ù.) ÆÄ¼È ÄÚ¾î´ÂCORECASE¸¦ ÀÌ¿ëÇؼ °¦¾Æ³À´Ï´Ù. ºÎÂø·Â ÃøÁ¤ Å×½ºÆ®¸¦ À§ÇØ, ÄÚ¾î´Â ¿ø¸é¿¡¼ 25mm ±íÀÌ È¤Àº ÄÚ¾î Á÷°æÀÇ 1/2 Áß º¸´Ù Å« ¼öÄ¡¸¸Å °¦¾Æ³À´Ï´Ù. ¿ø¸éÀÇ ÀÎÀå·ÂÀ» ¾Ë¾Æº¸·Á¸é, 25mm ±íÀÌ·Î °¦¾Æ³»½Ê½Ã¿À.
4 Ç®-¿ÀÇÁ. µð½ºÅ©´Â ±³Á¤µÈ ¼ö¾Ð½Ä ¾ÐÃà±â¸¦ ÀÌ¿ëÇØ °è»êµÈ ºñÀ²¿¡ µû¸¥ Á÷Á¢ ¾ÐÂø ¹æ½ÄÀ¸·Î ´ç°Ü ¿Ã¸³´Ï´Ù. ¾ÐÃà±â´Â Ç®¾Æ¿ô Å×½ºÆ®¿Í ¸¶Âù°¡Áö ¹æ½ÄÀ¸·Î ÀÌ¿ëµÇ´Âµ¥, ÃøÁ¤ Ç¥¸éÀÇ °¡¿îµ¥¿¡ À§Ä¡½ÃÅ°´Â ¿øÇü °¡¾Ð ¸µÀ» ³»ÀåÇÏ°í ÀÖ½À´Ï´Ù. ÃÖ°í ¾Ð·ÂÀº ÀúÀåµÇ¾î ÆÄ¼È ÄÚ¾îÀÇ ´Ü¸éÀ» ºÐ¸®ÇØ ´ç°Ü ¿Ã¸®´Â ÈûÀ» °è»êÇÒ ¶§ È°¿ëµË´Ï´Ù. »ó´ÜÀÇ ±×¸²¿¡¼ »ìÆ캻(a), (b), (c)¿Í °°Àº ÃøÁ¤ ½ÇÆе鵵 ÀúÀåµË´Ï´Ù.
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- ÃøÁ¤ ÀýÂ÷¿Í BOND-TEST¿¡ È°¿ëµÇ´Â Ư¼ö ÀåÄ¡µéÀº µð½ºÅ©°¡ Èçµé¸®Áö ¾Ê°í Á÷Á¢ ¾ÐÂøÇÏ¿© ´ç°Ü ¿Ã¸± ¼ö ÀÖµµ·Ï µµ¿ÍÁÝ´Ï´Ù.
- µð½ºÅ©ÀÇ Èçµé¸²Àº 20~50% Á¤µµÀÇ ³·Àº ÃøÁ¤°ªÀ» ¾ß±â½Ãų ¼ö ÀÖ½À´Ï´Ù.
- µð½ºÅ©´Â ÃøÁ¤ÇÏ´Â µ¿¾È ¿Ö°îÀ» ¹æÁöÇϱâ À§ÇØ ÃæºÐÇÑ °Á÷¼ºÀ» °¡Áö°í ÀÖ¾î¾ß ÇÕ´Ï´Ù.
- GRA Á¢ÂøÁ¦¸¦ ÀÌ¿ëÇؼ ÁغñµÈ, °ÇÁ¶ÇÑ ÃøÁ¤ ÁöÁ¡¿¡ ¿À¿°µÇÁö ¾ÊÀº µð½ºÅ©¸¦ ºÎÂøÇϸé, ÀÌ·¯ÇÑ µð½ºÅ©/µ¡´í ºÎºÐ ȯ°æ¿¡¼´Â ÃøÁ¤ ½ÇÆа¡ ³ªÅ¸³ªÁö ¾Ê½À´Ï´Ù.
- ÀÌ·¯ÇÑ È¯°æ¿¡¼ÀÇ ÃøÁ¤ ½ÇÆд ºÎÁ¤È®ÇÑ ÃøÁ¤À̹ǷΠºÎÂø·ÂÀ» ÃøÁ¤ÇϽ÷Á¸é ¹Ýµå½Ã ¹Ýº¹ÀûÀ¸·Î ÀçÃøÁ¤ ÇÏ¼Å¾ß ÇÕ´Ï´Ù.
Testing Examples
BOND-TEST being performed for quality control of the bond between a wear resistant overlay and a concrete slab; coring after bonding the 75- mm disc is shown (left), application of pull-off load (middle), and the bond failure, type (b), between the overlay and the substrate (right) at 1.8 MPa | |
BOND-TEST being performed on granite tiles in a subway station |
The bond of a repair on a balcony being evaluated with BOND-TEST |
The BOND-TEST Equipment and Ordering Numbers
B-10000 DSV-Kit: For surface planing, bonding the disc, and attaching the coring rig to produce the partial core without anchoring.
B-11000 BOND-TEST Preparation Kit: For removing the center knob after surface planing, cleaning the surface, bonding the discs, and heating the discs in cold weather conditions
Optionally:
CORECASE CS-75: For producing the partial core.
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B-13000 BOND-TEST Pull Machine Kit
The hydraulic pull machine has a 0 to100 kN precision electronic gauge with memory for storage of test results (peak-value, time and date of testing). The peak-value is shown after a test has been completed. The internal accuracy of the gauge is 0.01 kN. The display shows the pull force in 0.1 kN digital increments. The pull machine needs to be re-calibrated once a year, or sooner, if serviced or damaged. |
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