• Proceedings of the Korean Institute of Building Construction Conference
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• 2016.10a
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• pp.144-145
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• 2016

In this study, the research to be utilized as a binder to increase the early strength of concrete polysilicon sludge is a byproduct industries. In this paper, there is a purpose to confirm the initial strength performance of polysilicon sludge.

• Magazine of the Korea Concrete Institute
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• v.11 no.2
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• pp.231-239
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• 1999

When the concrete is cast at the sea, there are lots of restrictions in the working process being different from in land, and the concrete is suffered from the physical and chemical action in terms of marine environment. The compressive strength was measured after antiwash out underwater concrete mixed with fly ash had been cast and cured in order to produce the endurable high performance concrete, and then its characteristic was discussed by comparing one cured in air with in fresh water, and the effect of fly ash usage under the properly controled sea water temperature of $15{\pm}3^{\circ}C$ was also covered. The present work showed that the proper usage of fly ash was obtained at the condition of around 10% of substituted binder weight under the structure required the early age strength, and at the condition of over 40% if considering its durability and economy.

• Cement
• /
• s.76
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• pp.45-50
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• 1979

• 레미콘
• /
• no.12 s.14
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• pp.33-42
• /
• 1987

• 레미콘
• /
• no.9 s.17
• /
• pp.47-59
• /
• 1988

• 레미콘
• /
• no.12 s.18
• /
• pp.35-48
• /
• 1988

• 레미콘
• /
• no.3 s.19
• /
• pp.45-58
• /
• 1989

• Cement Symposium
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• no.15
• /
• pp.40-44
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• 1987

• 레미콘
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• no.12 s.10
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• pp.2-11
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• 1986

• Proceedings of the Korean Institute of Building Construction Conference
• /
• 2012.11a
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• pp.221-222
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• 2012

This study is to high early concrete development which reveals 14 MPa within 12 hours in order to reduce the mold time of dismantlement and not do the steam curing of the precast concrete product. About (40~50) min could shorten the final setting time if the coagulation test result cement amount 100 kg/m3 was increased. In the case of the compressive strength, it was exposed to be satisfied the target value with the cement amount 500 kg/m3 combination according to the hardening accelerator addition.