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Çѱ¹Áö¹Ý°øÇÐȸ / v.26, no.1, 2010³â, pp.75-83
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( Characteristics of Uncofined Compressive Strength and Flow in Controlled Low Strength Materials Made with Coal Ash ) |
| °øÁø¿µ;°Çü³²;õº´½Ä; ÇѾç´ëÇб³ ´ëÇпø °Ç¼³È¯°æ°øÇаú;ÇѾç´ëÇб³ ´ëÇпø °Ç¼³È¯°æ°øÇаú;ÇѾç´ëÇб³ °Ç¼³È¯°æ°øÇаú;
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| Àú°µµ°íÀ¯µ¿ÈÀç´Â ´ÙÁüÀÌ ÇÊ¿ä ¾ø°í À¯µ¿¼ºÀÌ Å« ¹°Áú·Î ÀϹÝÀûÀ¸·Î ½Ã¸àÆ®, ºñȸ, ÀܰñÀç, ¹°, È¥ÈÁ¦ µîÀ» È¥ÇÕÇÏ¿© ¸¸µé¾îÁø´Ù. ±âÁ¸ÀÇ CLSMÀº ÀܰñÀç·Î ¸ð·¡¸¦ »ç¿ëÇϰí ÀÖÀ¸³ª ¶§¹®¿¡ ¸ð·¡°¡ Á¡Á¡ ±¸Çϱ⠾î·Á¿öÁö´Â ÇöÀç ¿ì¸®³ª¶ó ½ÇÁ¤¿¡¼´Â ±×´ë·Î »ç¿ëÇϱ⠰ï¶õÇÏ´Ù. º» ¿¬±¸¿¡¼´Â ¸ð·¡´ë½Å ¸Å¸³È¸¸¦ ÀÌ¿ëÇÏ¿© ¸Å¸³È¸, ºñȸ, ½Ã¸àÆ®, ¹°ÀÇ È¥ÇÕ¹°·Î ¸¸µé¾îÁø CLSMÀÇ °µµÆ¯¼ºÀ» Á¶»çÇÏ¿© »ç¿ë°¡´É¼ºÀ» Á¦½ÃÇϰíÀÚ ÇÑ´Ù. ÀÏÃà¾ÐÃà°µµ½ÇÇè°á°ú ±âÁØ ÀÏÃà¾ÐÃà°µµ(0.5MPa~1.0MPa)¸¦ ¸¸Á·ÇÏ´Â ¹èÇÕºñ´Â ¸Å¸³È¸¿Í ºñȸÀÇ È¥ÇÕºñ 0:100~70:30, ½Ã¸àÆ®ºñ 3.0~5.0%, ÇÔ¼öºñ 31~34%·Î ³ªÅ¸³µ´Ù. Ç÷οì½ÃÇè °á°ú ¸Å¸³È¸¿Í ºñȸ¸¦ È¥ÇÕÇÏ¿© »ç¿ëÇÏ´Â ¸ðµç °æ¿ì(¸Å¸³È¸¿Í ºñȸÀÇ ºñ 30:70~70:30)¿¡¼ ±âÁØ Ç÷ο찪(0.2m)¸¦ ¸¸Á·ÇÏ¿´´Ù. |
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| Controlled low strength material (CLSM) is a flowable mixture and does not need to be compacted. It is produced by mixing portland cement, fly ash, fine aggregates, water and chemical admixtures. Sand is the most commonly used fine aggregates in the conventional CLSM, but it is getting more and more difficult to obtain sand in Korea. In this study, the characteristics of unconfined compressive strength, flow and applicability of a new CLSM that is produced by mixing of pond ash, fly ash, water, cement are examined. An unconfined compressive strength satisfies the standard unconfined compressive strength (0.5~1.0 MPa) were obtained when the mixture ratio of pond ash and fly ash is 30:70~70:30, cement ratio is 3.0~5.0%, and water content is 31~34%. The results of flow test indicate that the mixture ratio of pond ash and fly ash which satisfy the standard How value (0.2 m) is 30:70~70:30. |
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| Ű¿öµå |
| Controlled low strength material;Pond ash;Flow;Fly ash;Unconfined compressive strength; |
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Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.26, no.1, 2010³â, pp.75-83
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO201015939077235)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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