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Çѱ¹Áö¹Ý°øÇÐȸ / v.18, no.5, 2002³â, pp.229-236
½Ã¸àÆ®°è ÁÖÀÔÀçÀÇ ÁÖÀÔÆ¯¼º¿¡ °üÇÑ ¿¬±¸
( A Study on the Properties of Grout Materials Based on Cement Type )
õº´½Ä;ÃÖÁß±Ù; ÇѾç´ëÇб³ °ø°ú´ëÇÐ;ÇѾç´ëÇб³ ´ëÇпø Åä¸ñ°øÇаú;
 
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º» ³í¹®Àº ½Ç¿ëÈ­µÈ Áö¹Ý°³·®¿ë ¸¶ÀÌÅ©·Î½Ã¸àÆ® ¹× º¸ÅëÆ÷Ʋ·£µå½Ã¸àÆ®ÀÇ ÁÖÀÔÆ¯¼º¿¡ °üÇÑ ¿¬±¸·Î¼­ ±âÃʹ°¼º, °í°áÀ², ħÅõ¼º°ú °°ÀÌ ½ÇÇèÀûÀ¸·Î ÁÖÀÔÀçÀÇ ÀÔµµ¿Í ´ÙÁüÁ¤µµ¸¦ Á¶Á¤Çϰí, ÁÖÀÔ´ë»ó Åä»çÁö¹ÝÀÇ Åõ¼ö°è¼ö¸¦ 3Á¾·ù·Î º¯È­½ÃÄÀ ¾à¾×ÁÖÀÔÀÇ ÁÖ¿ä Æ¯¼ºÀ» °ËÅäÇÑ °ÍÀÌ´Ù. ÁÖÀÔÀçÀÇ Àû¿ë¼ºÀ» Æò°¡Çϱâ À§ÇÏ¿© °í°á¼º ½ÃÇè ¹× Ä§Åõ¼º ½ÃÇèÀ» ½Ç½ÃÇÑ °á°ú, ¸ðÇüÅä»çÁö¹ÝÀÇ »ó´ë¹Ðµµ¿¡ µû¸¥ Åõ¼ö°è¼ö¸¦ $10^{-4}$~$10^{-2}$cm/sec·Î º¯È­½ÃŲ °æ¿ì, ¸¶ÀÌÅ©·Î½Ã¸àÆ®´Â Åõ¼ö °è¼ö $10^{-4}$cm/sec¿¡¼­ À¯È¿°í°áÀ² 75%, ħÅõÁÖÀÔÀ² 86%·Î¼­ ħÅõ¼º ¹× °í°á¼ºÀÌ ¿ì¼öÇÑ °á°ú¸¦ ³ªÅ¸³½ ¹Ý¸é, OPC´Â $10^{-2}$cm/sec¿¡¼­ À¯È¿°í°áÀ² ¹× ħÅõÁÖÀÔÀ²ÀÌ 50% ¹Ì¸¸À¸·Î¼­ ¿øÈ°ÇÑ Ä§ÅõÁÖÀÔÀÌ µÉ ¼ö ¾øÀ½À» ¾Ë ¼ö ÀÖ¾ú´Ù. ´ï ±âÃÊ Áö¹Ý ¹× ¿¬¾àÁö¹ÝÀÇ º¸°­À» À§ÇØ ÁÖÀÔÀçÀÇ Ä§Åõ¼ºÀÌ ¿ä±¸µÇ´Â °æ¿ì¿¡´Â ¸¶ÀÌÅ©·Î½Ã¸àÆ®°¡ Àû¿ë¼ºÀÌ ¸Å¿ì ¿ì¼öÇÑ °ÍÀ¸·Î ÆÇ´ÜµÈ´Ù. µ¿¼öÁöÁß ¸ðÇü½ÃÇè °á°ú À¯¼ÓÀÌ »ó´ëÀûÀ¸·Î ´À¸° °æ¿ì ÁÖÀÔ¾ÐÀÌ ³ôÀ»¼ö·Ï, ¿Ï°áÇü ÁÖÀÔÀç°¡ °í°áÈ¿°ú°¡ ¿ì¼öÇÑ ¹Ý¸é, À¯¼ÓÀÌ ºü¸¥ °æ¿ì¿¡´Â ¿Ï°áÇüÀÇ °æ¿ì ÁÖÀÔÀçÀÇ ´ëºÎºÐÀÌ ¿ÜºÎ·Î À¯ÃâµÇ´Â µî À¯È¿°í°áÀ²ÀÌ ¸Å¿ì ³·¾Æ °í°áÈ¿°ú°¡ ºÒ·®ÇÔÀ» ¾Ë ¼ö ÀÖ¾ú´Ù.
In this study, the characteristics of chemical grouting, such as solidification, penetrability, were analyzed experimentally by grain size of grout materials and permeability, relative density of the ground. For evaluating applicability of grout material, solidification tests and permeability tests were peformed. From the results of the tests, effective solidification ratio and penetrability ratio of Micro Cement were 75% and 86% respectively when ground permeability was in the range of 10$^{-4}$ to 10$^{-2}$cm/sec. On the other hand, effective solidification ratio and penetrability ratio of Ordinary Portland Cement (OPC) were both lower than 50%. When penetrability of grout material is needed for improvement of dam foundation and soft ground, application of Micro Cement is much superior to that of the other materials. The results of the grouting tests in the hydrodynamic ground show that the solidification effect of long gel-time grout material is excellent as injection pressure increases when groundwater velocity is relatively low. But when groundwater velocity is relatively high, the solidifcation effect of long gel-time grout material is very poor because most grout materials are outflowed.
 
Ű¿öµå
Gel-time;Micro cement Penetrability;Permeability;Solidification;
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.18, no.5, 2002³â, pp.229-236
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200211921407919)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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