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Çѱ¹Áö¹Ý°øÇÐȸ / v.14, no.6, 1998³â, pp.113-125
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Ãʹ̸³ÀÚ Áö¹ÝÁÖÀÔÀç·Î¼ ÇöóÀֽ̾¬ÀÇ Àû¿ë¼º¿¡ °üÇÑ ¿¬±¸
( A Study on the Utilization of Coal Fired Fly-ash as Microfine Grouting Materials ) |
| õº´½Ä;±èÁøÃá; ÇѾç´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú;ÇѾç´ëÇб³ ´ëÇпø Åä¸ñ°øÇаú;
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| 1997³âÀÇ ±¹³» ÇöóÀֽ̾¬ ¹ß»ý·®Àº ¾à 300¸¸Åæ¿¡ À̸£°í ±× Áß ¾à 50¸¸ÅæÀÌ ÄÜÅ©¸®Æ® È¥ÈÀç·á·Î, ¾à 30¸¸ÅæÀÌ ½Ã¸àÆ® ¿ø·á ¹× ÄÜÅ©¸®Æ® 2Â÷Á¦Ç°ÀÇ ¿ø·á·Î ÀçȰ¿ëµÇ¾úÁö¸¸ ¿Ü±¹¿¡¼ ÀçȰ¿ëÀ²ÀÌ ³ôÀº Áö¹Ý°³·®Àç·Î´Â °ÅÀÇ ½ÇÀûÀÌ ¾ø´Ù. µû¶ó¼, º» ¿¬±¸ÀÇ ¸ñÀûÀº ȷ¹ßÀü¼ÒÀÇ ºÎ»ê¹°ÀÎ ÇöóÀֽ̾¬·Î ºÎÅÍ Ãʹ̺и»À» ºÐ±ÞÇÏ¿© ºÎ°¡°¡Ä¡°¡ Å« Ãʹ̸³ÀÚ ÁÖÀÔÀç·Î Àû¿ëÇÒ ¼ö ÀÖ´ÂÁö °¡´É¼ºÀ» È®ÀÎÇϰíÀÚ ÇÑ´Ù. º» ¿¬±¸¸¦ À§Çؼ ºí·¹ÀÎ ºñÇ¥¸éÀû 6,000$cm^2$/g, 8,000$cm^2$/gÀÇ 2¼öÁذú, ÇöóÀֽ̾¬ ÷°¡·® 30%, 50%, 70%ÀÇ 3¼öÁØ µî ÃÑ 6°¡Áö Á¶ÇÕÀÇ ½ÃÁ¦Ç°À» ¸¸µé¾úÀ¸¸ç, °¢°¢¿¡ ´ëÇØ¼ ½Ã¸àÆ® Ư¼º, ÁÖÀÔÀç Æ¯¼ºÀ» Æò°¡ÇÏ¿´´Ù. ½Ã¸àÆ®ÀÇ ¹°¸®Àû Ư¼º, ÁÖÀÔÀçÀÇ ÀÛ¾÷½Ã°£È®º¸, ÁÖÀÔÀç °í°áüÀÇ ³»±¸¼º Ãø¸é¿¡¼ ºÐ¼®ÇÑ °á°ú, ÇöóÀֽ̾¬°è Ãʹ̺и» ÁÖÀÔÀçÀÇ ÇöóÀֽ̾¬ ÷°¡·®ÀÇ ÇѰè´Â 50%ÀÌÇÏ·Î ÇÏ´Â °ÍÀÌ ¿ä¸ÁµÈ´Ù. ¶ÇÇÑ, ÇöóÀֽ̾¬¿¡ ÇÔÀ¯µÇ¾î ÀÖ´Â ¹Ì¿¬Ä«º»¿¡ ÀÇÇØ¼ Çöʾ×ÀÇ Ç¥¸é¿¡ ź¼ÒÇǸ·ÀÌ Çü¼ºµÇ°í °è¸éȰ¼ºÁ¦ÀÇ ¼Ò¿ä·®ÀÌ Áõ°¡ÇϹǷΠ°¡±ÞÀû ¹Ì¿¬Åº¼Ò ÇÔÀ¯·®ÀÌ ÀûÀº Á¤Á¦µÈ ÇöóÀֽ̾¬¸¦ »ç¿ëÇÏ´Â °ÍÀÌ ÇÊ¿äÇÏ´Ù. º» ¿¬±¸¸¦ ÅëÇØ¼ ȷ¹ßÀü¼ÒÀÇ Æó±â¹°ÀÎ ÇöóÀֽ̾¬¸¦ °íºÎ°¡°¡Ä¡ Á¦Ç°ÀÎ Ãʹ̸³ÀÚÁÖÀÔÀç·Î Àû¿ëÀÌ °¡´ÉÇÔÀ» È®ÀÎÇÏ¿´À¸¸ç, ±¹³»ÀÇ ±â¼ú¿©°Ç¿¡¼µµ Æó±âÇöóÀֽ̾¬·Î ºÎÅÍ °íºÐ¸» ÇöóÀֽ̾¬¸¦ ºÐ±ÞÇÏ´Â °ÍÀÌ ±â¼úÀûÀ¸·Î °¡´ÉÇϱ⠶§¹®¿¡ º» ¿¬±¸¼º°ú´Â ÇöÀåÀû¿ë¼ºÀÌ ¸Å¿ì ³ôÀº °ÍÀ¸·Î Æò°¡µÇ¾ú´Ù. |
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| At the end of 1997 about 3 million tons of coal ash was produced as byproducts from the coal fired electrical power plants in Korea. Only about 27% of that byproducts was utilized as the admixtures of cement and concrete industry. But the large quantity of coal fired fly-ash has been used as the soil improvement materials in other countries. So the aim of this study is the estimation of the applicability of the coal fired fly-ash as microfine grouting materials by admixing the superfine particles which were separated from the coal fired fly-ash for the higher values. The 6 types of specimens were manufactured in the laboratory for the purpose of estimating the chemical and physical properties of cement and grouts. These specimens consisted of 2 specific surfaces of 6, 000 and 8, 000$cm^2$/g in Elaine method. And these specimens are devide into 3 ratios (30%, 50%, 70%) of fly-ash by weight. From the estimated properties of the coal fired fly-ash microflne cements and grouts, 50% fly-ash is the most suitable ratio for grouting materials. However, further study of durability is necessary for using fly-ash grouts practically at the field projects. The higher content of the unburned carbon of fly-ash increases the thinner layer of carbon on the surface of solution of grouts, and requires more quantity of surface active agent. As a results of this study, it is found that the microfine fly-ash is very useful as a good grouting material if 50% of fly-ash is added with the microfine portland cement. So, in the near future, if the coal fired fly-ash is able to be used as grouting material in Korea, the demand of fly-ash will increase rapidly. |
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| Ű¿öµå |
| Coal fired fly-ash;Microfine cement;. Grouting material;Unburned carbon content;Syneresis;Durability of hydrates;Admixture ratio; |
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Çѱ¹Áö¹Ý°øÇÐȸÁö:Áö¹Ý / v.14, no.6, 1998³â, pp.113-125
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-215X
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199811921757724)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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