• Proceedings of the Korean Society for Food Science of Animal Resources Conference
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• 2001.06a
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• pp.65-65
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• 2001

• Proceedings of the Korean Society for Food Science of Animal Resources Conference
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• 2001.06a
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• pp.67-67
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• 2001

• Journal of The Korean Society of Agricultural Engineers
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• v.52 no.3
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• pp.9-17
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• 2010

This study aims to evaluate a porous concrete using hwang-toh, blast furnace slag and blast furnace slag (BFS) cement instead of type I cement. The tests that were carried out to analysis the properties of porous hwang-toh BFS cement concrete included compressive strength, continuous void ratio, absorption rate, and pH value, repeated freezing and thawing test were conducted. Test results indicated that the performance in porous hwang-toh concrete are effective on the kaoline based binder materials. The pH value were shown in about 9.5 ~ 8.5. The compressive strength was increased and void ratio was decreased with increasing the kaoline based binder materials, respectively. The void ratio and compressive strength were in the range of about 21 ~ 30 %, 8 ~ 13 MPa, respectively. The increased in void ratio of more than 25 % is showed to reduce the resistance of repeated freezing and thawing. Also, the resistance of repeated freezing of thawing and the compressive strength of porous hwang-toh BFS cement concrete are independent with hwang-toh content and BFS cement amount. But, the void ratio was decreased with increasing the high volume hwang-toh contents (more than 15 %).

• KIEAE Journal
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• v.12 no.6
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• pp.99-106
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• 2012

This research tried to analyze the effects of ecological materials 'hwang-toh (yellow soil)' on indoor environments. For this purpose, two full scale mock-ups were constructed: one with silk wall paper, which is generally used for indoor finishing and the other with hwang-toh, which is the ecological material for wall finishing. Comparison and performance evaluations were conducted, and the effects of hwang-toh finishing on a humid indoor environment were verified. Through this research, it was verified that a hwang-toh plaster finish is effective in maintaining the comfort of an indoor environment.

• Proceedings of the Korean Magnestics Society Conference
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• 2007.12a
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• pp.30-32
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• 2007

• Proceedings of the Korean Aquaculture Society Conference
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• 2006.05a
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• pp.556-557
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• 2006

• KIPE Magazine
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• v.15 no.1
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• pp.29-35
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• 2010

• Science & Technology Policy
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• v.7 no.11 s.104
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• pp.46-54
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• 1997

• Proceedings of the KSLP Conference
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• 2008.03a
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• pp.21-21
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• 2008

• Proceedings of the Korean Radioactive Waste Society Conference
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• 2006.11a
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• pp.29-30
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• 2006