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Çѱ¹µµ·ÎÇÐȸ / v.3, no.4, 2001³â, pp.117-126
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Á÷Á¢ÀÎÀ广¹ý¿¡ ÀÇÇÑ SBR Æú¸®¸Ó °³Áú ÄÜÅ©¸®Æ®ÀÇ ºÎÂø°µµ Ư¼º Æò°¡
( Evaluation For Adhesion in Tension of SBR Polymer Modified Concrete Tensile by Uniaxial Method ) |
| À±°æ±¸;ÀåÈï±Õ;À̳²ÁÖ;À̽ÂÀç;ȫâ¿ì; °¿ø´ëÇб³ Åä¸ñ°øÇаú;°¿ø´ëÇб³ Åä¸ñ°øÇаú;°¿øµµ¸³Àü¹®´ë Åä¸ñ°øÇаú;½ÂÈÀÌ¿£¾¾;°¿ø´ëÇб³ ¼®À纹ÇսżÒÀçÁ¦Ç°¿¬±¸¼¾ÅÍ;
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| º» ¿¬±¸´Â ÀÏ¹Ý ÄÜÅ©¸®Æ®¿Í SBR ¶óÅØ½º °³Áú ÄÜÅ©¸®Æ®ÀÇ ºÎÂø°µµ Ư¼ºÀ» ºÐ¼®ÇϰíÀÚ ½Å ±¸ ÄÜÅ©¸®Æ®·Î ±¸¼ºµÈ Á÷Á¢ÀÎÀå ½ÃÇèü¸¦ Á¦ÀÛÇÏ¿© ºÎÂø°µµ¸¦ ÃøÁ¤ÇÏ¿´´Ù. À̶§, ½ÃÇèü¿Í ÃøÁ¤±âÀÇ ¿¬°áÀåÄ¡°¡ $360^{circ}$ ȸÀüÀÌ °¡´ÉÇϵµ·Ï ½ÃÇèÀåºñ¸¦ °³¼±ÇÏ¿© ½ÃÇèüÀÇ Æí½ÉÀÌ ºÎÂø°µµ ÃøÁ¤¿¡ ¹ÌÄ¡´Â ¿µÇâÀ» ÃÖ¼ÒÈ¿´´Ù. ÁÖ¿ä ½ÇÇ躯¼ö·Î´Â ¶óÅØ½º È¥ÀÔÀ², Ç¥¸é 󸮻óÅÂ, Ç¥¸é ÇÔ¼ö»óÅ·ΠÁ¤ÇÏ¿´À¸¸ç ½ÇÇè°á°ú´Â ´ÙÀ½°ú °°´Ù; ¶óÅØ½º È¥ÀÔ·üÀÌ Áõ°¡ÇÔ¿¡ µû¶ó ºÎÂø°µµµµ Áõ°¡ÇÏ¿´À¸¸ç, È¥ÀÔ·ü 15%¿¡¼ 37%ÀÇ ÁõÁøÀ» º¸¿´´Ù. À̰ÍÀº ¶óÅØ½º°¡ °ñÀç¿Í ½Ã¸àÆ® ÆäÀ̽ºÆ® »çÀÌ¿¡ ÃæÀüµÇ¾î Çʸ§ ¸·À» Çü¼ºÇÏ°í ºÎÂø·ÂÀ» ÁõÁø½ÃÄױ⠶§¹®ÀÎ °ÍÀ¸·Î ÆÇ´ÜµÈ´Ù. Ç¥¸é󸮿¡ µû¶ó ºÎÂø°µµÀÇ º¯È¸¦ °íÂûÇÑ °á°ú, »÷µå ±×¶óÀεù°ú ¿ÍÀÌ¾î ºÎ·¯½¬¿¡ ÀÇÇØ Ç¥¸é󸮸¦ ÇÏ¿´À» °æ¿ì ºÎÂø°µµ´Â ´Ü¼ø Àý´ÜÇÑ °æ¿ìº¸´Ù ¾à 49% Áõ°¡ÇÏ¿´´Ù. Ç¥¸éÇÔ¼ö »óÅ¿¡ µû¸¥ ¿µÇâÀ» °íÂûÇÑ °á°ú, ºÎÂø°µµ´Â ±âÁ¸ ÄÜÅ©¸®Æ® Ç¥¸éÀÌ °ÇÁ¶ÇÏ¿´À» °æ¿ì¿¡ °¡Àå ÀÛ°Ô ³ªÅ¸³µ°í, ÀÚÀ¯¼ö°¡ Ç¥¸é¿¡ ÀÖÀ» ¶§°¡ ±× ´ÙÀ½À» ³ªÅ¸³ÂÀ¸¸ç, Ç¥¸é°ÇÁ¶Æ÷È»óÅ¿¡¼± 37% Áõ°¡ÇÏ¿© °¡Àå Å©°Ô ³ªÅ¸³µ´Ù. µû¶ó¼ ºÎÂø°µµ¸¦ ÁõÁø½Ã۱â À§Çؼ´Â ÀûÀýÇÑ Ç¥¸éó¸®¿Í Ç¥¸éÇÔ¼ö»óÅÂÀÇ À¯Áö°¡ ÇʼöÀûÀÓÀ» ¾Ë ¼ö ÀÖ¾ú´Ù. |
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| In this research, evaluation of adhesion in tension property of SBR-modified concrete to ordinary portland cement concrete was conducted with uniaxial direct tensile bond test which was proposed by Kuhlmann. A test set-up was fabricated in order to minimize the eccentric force by introducing a joint which might fully rotate. The main experimental variables were cement-latex ratios, surface preparations and moisture levels. The results obtained were as follows: The LMC specimen at 15% latex-cement ratio increased the adhesion in tension by range of 37% compared to that of conventional cement concrete. This might be due to latex film formed between cement paste and aggregate. The effects of surface preparation on bond of latex modified concrete to conventional concrete were significant at the conditions by sand paper and wire brush. A better bond could be achieved by rough surface rather than smooth. The saturated and surface dry (SSD) condition were considered to be the most appropriate moisture level followed by wet, finally by dry. Thus, a proper surface preparation and moisture level are quite necessity in order to obtain better bonding at LMC overlay. |
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| ºÎÂø°µµ;¶óÅØ½º °³Áú ÄÜÅ©¸®Æ®;ÀÏÃàÀÎÀå½ÇÇè;Ç¥¸éÁغñ;bond strength;latex modified concrete;uniaxial tensile test;surface preparation; |
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Çѱ¹µµ·ÎÇÐȸ³í¹®Áý / v.3, no.4, 2001³â, pp.117-126
Çѱ¹µµ·ÎÇÐȸ
ISSN : 1738-7159
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200115637535697)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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