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* ÀüÀ§Â÷ ÃøÁ¤ (Half-Cell Potential) ¹æ½Ä
* ASTM C--876

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  • - °æÁ¦ÀûÀÎ °¡°Ý´ë·Î »ç¿ëÀÌ ¸Å¿ì ½±°í ´Ü¼øÇÔ.

  • - Àü±Ø (electrode)Àº Å»Âø ¿¬ÀåÀÌ  °¡´ÉÇÏ¿© µµ´ÞÇϱâ Èûµç ºÎÀ§¿¡µµ ÃøÁ¤ÀÌ ¿ëÀÌÇÔ.

  • - °í ÀÎÇÇ´ø½º (High impedance) ÀÇ µðÁöÅÐ Àåºñ·Î ¿­¾ÇÇÑ ÇöÀå¿¡¼­µµ »ç¿ëÀÌ ¿ëÀÌ ÇÔ.

  • - Àü±Ø(Electrode)Àº ¼öÆò, ¼öÁ÷Àº ¹°·Ð ¿ª¸³ ¹æÇâÀ¸·Îµµ ÃøÁ¤ÀÌ °¡´É ÇÔ.

  • - ASTM C-876 ±Ô°Ý¿¡ ºÎÇÕ.

- ASTM C-876 ±Ô°Ý¿¡ µû¸¥ ºÎ½Ä ºÎÀ§¸¦ È®ÀÎÇÏ´Â °æÁ¦ÀûÀÎ ¹æ¹ý .

°í ÀÎÇÇ´ø½º Àü¾Ð°è (high impedance voltmeter) °¡ öÀç º¸°­Á¦ (reinforcing steel)¿Í ÃøÁ¤ÇÒ ÄÜÅ©¸®Æ® Ç¥¸éÀÇ Cu-CuSO4 Àü±Ø

  (reference  electrode)À» ¿¬°áÇÏ¿© ÀüÀ§Â÷ ¹æ½ÄÀ¸·Î ÃøÁ¤ ÇÔ..

 

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-  ºÎ½ÄÀº ÄÜÅ©¸®Æ® ³»ºÎ¿¡ »ê¼Ò¿Í ¼öºÐÀÌ ÀÖÀ»¶§ ¹ß»ýµÇ´Â Àü±â È­ÇÐÀû °úÁ¤À¸·Î ½ÇÁ¦ ºÎ½ÄÀº ÄÚÆÃÀÌ µÇÁö ¾ÊÀº öÁ¦ º¸°­Á¦ÀÇ 

   ´Ù¸¥ºÎÀ§ (different section) ¾ÈÀÇ ¿¡³ÊÁöÀÇ ±³È¯ÀÌ´Ù.

- ³ôÀº ÀÎÇÇ´ø½ºÀÇ Àü¾Ð°è (high impedance voltmeter) ¸¦ öÀç º¸°­Á¦¿Í ÄÜÅ©¸®Æ® Ç¥¸éÀÇ Àü±Ø »çÀ̸¦ ¿¬°áÇÏ¿©   ´ëÁ¶ ¼¿

  (reference cell) ÀÇ À§Ä¡¿¡¼­ÀÇ ÀüÀ§Â÷¸¦ ÃøÁ¤ÇÏ°í ´Â ´ëÁ¶ ¼¿ (reference cell) ºÎ±ÙÀǠöÀÇ ºÎ½Ä °³¿¬¼ºÀ» ÃøÁ¤ ÇÑ´Ù..

-  ´ëÁ¶¼¿ (reference cell) Àº  È²»ê±¸¸®¿ë¾× ¾ÈÀÇ ±¸¸® ÀÌ´Ù. 

ÀüÀ§Â÷ (half cell potential) ÃøÁ¤À¸·Î half cell potential ÀÇ µî°Å¸® °ªÀ» ½Å¼ÓÇÏ°Ô Ãëµæ ÇÒ ¼öÀÖÀ¸¸ç µû¶ó¼­ reinforcing steel ÀÇ

  ºÎ½Ä °³¿¬¼º ±¸¿ªÀ» È®ÀÎ ÇÒ ¼ö ÀÖ´Ù.

 

- Cor Map¢â  À¸·Î ÃøÁ¤ µÈ °á°ú °ªÀÇ ºÐ¼®Àº °ÝÀÚ¸ð¾ç¿¡ ±¸È¹ ¹× µîÀüÀÇ µî°í¼±À¸·Î Ç¥½ÃµÇ°í ºÎ½Ä È°µ¿ÀÌ ÀÖ´Â ±¸¿ªÀº highlighting

    µÇ¾î Ç¥½Ã µÈ´Ù. 

 

¾Æ·¡´Â ASTM ÀÇ  Guide

C-876 using a copper/copper sulphate half cell:

  • ÃøÁ¤ °ªÀÌ  350mV ÀÌ»óÀÌ¸é ±Ý¼ÓÀÇ ºÎ½Ä °¡´É¼ºÀÌ 95% ÀÌ´Ù.

  • ÃøÁ¤ °ªÀÌ 200 ~ 350mV ÀÌ¸é ±Ý¼ÓÀÇ ºÎ½Ä °¡´É¼ºÀÌ 0% ÀÌ´Ù.

  • ÃøÁ¤ °ªÀÌ  200mV ÀÌÇÏÀÌ¸é ±Ý¼ÓÀÇ ºÎ½Ä °¡´É¼ºÀÌ 5% ÀÌ´Ù. 

  • .

**ÀÌ °Ë»ç ¹æ¹ýÀº Æ¯º°È÷ ¾Æ·¡¿Í °°Àº °æ¿ì¿¡ È°¿ëµÈ´Ù. 

  • ±³·®¹Ù´ÚÆÇ  (Bridge Decks)            -ÁÖÂ÷Àå (Parking Garages)

  • ÄÜÅ©¸®Æ® ºÎµÎ ¹×  µµÅ© (Concrete Piers and docks)

  • ÇϺα¸Á¶¹° (Substructure)    -ÅͳΠ³»º® (Tunnel Lining)

  • Åä´ë (Foundations)

 

 Á¦Ç°ÄÚµåµå

 C-CM-4500

 High impedance voltmeter

 C-CM-4410

 Electrode extension pieces each 18 inches (41 cm) long

 C-CM-4400

 Reference electrode including copper sulphate reservoir

 C-CM-4210

 Container of copper sulphate (capacity 250 ml)

 C-CM-4220

 Wetting agent reservoir (capacity 125 ml)

 C-CM-4420

 Dispensing sponge

 C-CM-4300

 Cable reel with 250 ft. (80 meters) cable

 C-CM-4000

 Complete system