• Proceedings of the Korean Ceranic Society Conference
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• 2004.04b
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• pp.52.1-52.1
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• 2004

• Proceedings of the Korean Ceranic Society Conference
• /
• 2003.04a
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• pp.139.1-139
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• 2003

• Cement Symposium
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• s.40
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• pp.46-54
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• 2013

• Cement Symposium
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• s.39
• /
• pp.103-110
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• 2012

• Cement Symposium
• /
• s.39
• /
• pp.73-82
• /
• 2012

• Magazine of the Korea Institute for Structural Maintenance and Inspection
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• v.18 no.1
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• pp.63-68
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• 2014

• Water for future
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• v.54 no.1
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• pp.52-60
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• 2021

• Proceedings of the Korean Institute of Landscape Architecture Conference
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• 2021.10a
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• pp.81-82
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• 2021

• Journal of the Korean Geosynthetics Society
• /
• v.16 no.4
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• pp.13-20
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• 2017

In this study, laboratory tests were performed to evaluate for new filling materials (ZA-Soil) for bored pile that were developed using by high calcium ash. As a result of laboratory test, the uniaxial compression strength of 2 types of ZA-Soil are shown 68.0% and 64.6% compared to ordinary portland cement. And it have a suitable flowability and environmental stability. Also, after 28days, uniaxial compression strength of material mixed with soil and high strength filling material (ZA-Soil) for bored pile is 1.10-1.23 times bigger than material mixed with ordinary portland cement.

• Journal of the Korea Concrete Institute
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• v.16 no.3 s.81
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• pp.369-374
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• 2004

Calcium sulfoalumiante(CSA) was prepared for using natural calcite($CaCO_3$) and industrial by-products and wastes, such as $Al(OH)_3,\;CaSO_4{\cdot}2H_2O$. The mixture of raw materials was fired at 20, 400, 600, $1200^{\circ}C$ for 1h and cooled rapidly in air. The cement replaced by 10 wt% $C_4A_3S$ expansive additives was investigated by the measurement of the hydration products and compressive strength, setting time, expansion at wet curing condition. $C_4A_3S$ was found in x-ray diffraction pattern over the temperature $1200^{\circ}C$. The setting time or the cement pastes added clinkers fired at different temperature was shorter than ordinary portland cement. The compressive strength was higher than the ordinary portland cement about 20~30%. The mainly hydration products were ettringite, and $Ca(OH)_2$. The expansion due to the formation of ettringite during hydration decreased the drying shrinkage of hardened cement rather than the ordinary portland cement.