• Cement Symposium
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• no.30
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• pp.153-157
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• 2003

• Cement Symposium
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• s.38
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• pp.38-46
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• 2011

• Cement Symposium
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• no.17
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• 1989

• Cement Symposium
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• no.23
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• pp.36-48
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• 1995

• Cement Symposium
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• no.24
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• pp.75-81
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• 1996

• Cement
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• s.143
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• 1996

• Cement Symposium
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• no.27
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• 2000

• Cement Symposium
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• no.21
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• pp.60-65
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• 1993

• Cement
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• 2011

• Journal of the Korean Geotechnical Society
• /
• v.23 no.8
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• pp.159-169
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• 2007

The behavior of fiber-reinforced cemented sands (FRCS) was studied to improve a brittle failure mode observed in cemented sands. Nak-dong River sand was mixed with ordinary Portland cement and a Polyvinyl alcohol (PVA) fiber. A PVA fiber is widely used in concrete and cement reinforcement. It has a good adhesive property to cement and a specific gravity of 1.3. A PVA fiber has a diameter of 0.1 mm that is thicker than general PVA fiber for reinforced cement. Clean Nak-dong River sand, cement and fiber at optimum water content were compacted in 5 layers giving 55 blows per layer. They were cured for 7 days. Cemented sands with a cement/sand ratio of 4% were fiber-reinforced at different locations and tested for unconfined compression tests. The effect of fiber reinforcement form and distribution on strength was investigated. A specimen with evenly distributed fiber showed two times more strength than not-evenly reinforced specimen. The strength of fiber-reinforced cemented sands increases as fiber reinforcement ratio increases. A fully reinforced specimen was 1.5 times stronger than a specimen reinforced at only middle part. FRCS behavior was controlled not only by a dosage of fiber but also by fiber distribution methods or fiber types.