• Proceedings of the Korean Institute of Industrial Safety Conference
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• 2001.11a
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• pp.213-218
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• 2001

제품 생산자가 폐기물 수거 책임을 위해 수거비를 정부에 지불하는 경우와 자체적으로 정부 인정하에 수거 폐기하는 경우가 있는 것으로 분류되고 있다. 2001년 국내 굴지 5대 음료회사에서 정부와 합의한 것 중 하나가 자체 생산제품의 폐기처분 비율을 정부에 지불하지 않는 대신에 자체적으로 폐기하도록 합의하였다.(중략)

• Proceedings of the Korea Concrete Institute Conference
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• 2000.10a
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• pp.46-53
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• 2000

• Journal of the Korea Concrete Institute
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• v.13 no.2
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• pp.87-92
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• 2001

Until now, disposal of casting foundry fly ash generally depends on reclamation. This is the great loss from a point of view saving of resources and utilizing industrial wastes. Therefore, a study on the use of fly ash as a substitute material for construction is necessary in order to utilize industrial wastes, to reduce cost of production, to improve quality in producing concrete products, and to protect environment from pollution. In this study, concrete products(hollow concrete block and concrete brick) using casting foundry fly ash as a substitute materials for cement, are produced. And experiments are conducted based on Korean Industrial Standards. Finally, the used methods of casting foundry fly ash as a substitute materials in industry are presented.

• Journal of the Korea Organic Resources Recycling Association
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• v.20 no.2
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• pp.27-35
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• 2012

Concrete produced from the construction wastes has been largely used as the recycled aggregate. These wastes, however, is mostly used as filling materials. For any recycled aggregate like waste concrete to be used as normal construction materials, it is necessary to actively find out the proper market places as much as possible with the improved quality. In this study, we have investigated the present status on the occurrence and treatment of both domestic and abroad construction wastes, and also the recycling status and related legislation with some inhibitory factors. Based on these investigations, we suggested some effective ways to increase the recycling of construction wastes.

• Proceedings of the Korea Concrete Institute Conference
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• 2006.11a
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• pp.513-516
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• 2006

This study tested gravity separation with pseudo heavy liquid to produce structural recycled aggregates and recycled aggregates for road construction.

• Proceedings of the Korean Institute of Industrial Safety Conference
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• 2002.05a
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• pp.257-261
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• 2002

산업폐기물인 철녹을 콘크리트에 배합하여 그 강도특성을 밝힌 후에 다시 장기적으로 계절적 변화에 따라 노출된 구조 요소인 재료의 전기적 특성을 밝히는 것은 새로운 재료연구에 중요한 일이라 하겠다. 여기서 전기적 특성은 철의 본 성질을 기대할 수 없는 것으로 폐기물로서도 사용할 수 없는 것이기 때문이다. 본 연구에서는 일반콘크리트와 비교해서 전기적으로 특성이 개선될 수 있음을 기대하고 이에 대한 실험으로 사실확인을 하고 적용하는 요소에 따라 전기적 특성을 증진하는 배합요소를 찾고자 한다.(중략)

• Proceedings of the KSEEG Conference
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• 2003.04a
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• pp.169-171
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• 2003

최근 환경문제가 대두됨에 따라 산업폐기물의 처리문제에 많은 관심과 연구가 진행되고 있다. 또한 현대의 콘크리트 구조물은 거대화, 고층화되어 그 중량이 계속 커지고 있으므로 구조물을 경량화 하려는 노력과 개발이 계속 진행되어 왔다. 구조물의 주재료로 사용되고 있는 콘크리트는 강도 및 내구성에 비해 비중이 크다는 결점을 가지고 있으므로 강하고 가벼운 고강도의 경량골재 콘크리트 개발이 행해져 왔다. (중략)

• Journal of the Korean Society of Marine Environment & Safety
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• v.14 no.4
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• pp.289-295
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• 2008

The disposal of constructive waste is emerging as a national and social issue and the recycled powder generated by the production of reproductive aggregate is all being abolished or buried Analysis on the harmful effect of recycled powder indicated that because it contained massive cytotoxicity, it could derive secondary pollution to soil and subterranean water. This study set on an idea that one way to recycle recycled powder was to use it as a compound of concrete. In order to study that prospect, recycled powder, instead of cement, was mixed and a comparative analysis was conducted on the mechanical properties and workability. From experimental results, it was judged that application of recycled powder of cement replacement ratio below 20% was available with chemical admixtures. Also application of recycled powder was available to high strength concrete.

• Proceedings of the Korea Concrete Institute Conference
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• 2008.04a
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• pp.937-940
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• 2008

Recently, the recycling and reusing of construction and demolition waste concrete is urgently required because generation quantity of construction and demolition waste concrete is greatly increased according to the rapid increasing of urban redevelopment project. On the other hand, the problem solution for demand and supply unbalance of fine aggregate is urgently required because of the restriction of collecting sea fine aggregate by intensification of environment influence evaluation and the shortage of river fine aggregate. but a quality of aggregate as building structure is not demonstrated. Therefore it is the objective of this study to estimate plastic and early dry shrink crack of fiber reinforced concrete using a recycled aggregate by plat-ring test and mock-up test of exposure to the air. as a result, in case of plat- ring test, developing crack is wider using recycled aggregate concrete than natural aggregate concrete, is wider using fiber reinforced concrete than non fiber. in case of mock-up test of exposure to the air, it is similar to plat-ring test.

• Proceedings of the Korean Radioactive Waste Society Conference
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• 2008.05a
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• pp.46-46
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• 2008