한국지반공학회:학술대회논문집 (Proceedings of the Korean Geotechical Society Conference)
- 한국지반공학회 2010년도 추계 학술발표회 2차
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- Pages.81-87
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- 2010
석탄회의 자경성에 따른 공학적 특성연구
The Study on the Engineering Characteristics by Self-Hardening of Coal Ash
- Sang, Jung-Hyuk (Dept. of Civil and Environmental Eng., Hanyang University) ;
- Shin, Woong-Gi (Dept. of Civil and Environmental Eng., Hanyang University) ;
- Kim, Ji-Won (Dept. of Civil and Environmental Eng., Hanyang University) ;
- Chun, Byung-Sik (Dept. of Civil and Environmental Eng., Hanyang University)
- 발행 : 2010.09.09
초록
As enormous construction projects of land development are carried out around Korea, useful construction materials are needed to perform the construction projects. However, there are no more enough of fill and reclamation materials in our country. That is why the coal ash is expected to be utilized as an alternative material. Since the coal ash has the characteristics of a pozzolan and a selfhardening material, it is adjudged that coal ash has a great possibility to be used as a fill and reclamation material. In this study, grain size analysis, Atterberg limit test, and specific gravity test were performed to examine the physical characteristics of the coal ash about a self-hardening material before utilizing the coal ash in the construction. Compaction test, unconfined compression test were conducted to investigate the engineering characteristics according to mixture ratios of fly ash and bottom ash. As a result of the tests, it was confirmed that the mixing ratio 1:1 of fly ash and bottom ash is the most effective to use as a fill and reclamation material. If the mixture of coal ash is used as a backfill material with light weight around structure, it is expected to play a significant role in reducing earth pressure on the back of the structure. As described above, the coal ash should be considered as an alternative material of fill and reclamation materials since the result of the tests indicates that the coal ash is suitable to a useful material on the construction design.