• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2005년도 춘계 학술기술논문발표대회 논문집
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• pp.99-104
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• 2005

This study is as a part of the new disposal and recycling plans of heat-resource waste of Daegu dyeing, industrial center we tried to examine applicable possibility of crushed thing(waste aggregate) as aggregates for mortar and concrete. To examine applicable possibility of waste aggregate as a lightweight-aggregate for concrete and mortar, we carried this study by mainly property examination of concrete according to replacement ratio of waste aggregate. We carried slump, unit weight, compressive strength and bending strength test according to replacement ratio of waste aggregate. As the result of that, if we use waste aggregate, lightweight of concrete and mortar will be possible. Specially it shows a strength improvement effect of cement hardening according to using this so it is judged that applicable possibility as aggregate for concrete and mortar is very excellent.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2004년도 학술대회지
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• pp.87-90
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• 2004

Serious problems of the environment protection and resource exhaustion are exhibited. due to the increase of the construction materials and activation of the remodeling, recently. Especially, most of the advanced countries. recycling plan for the waste concrete is vigorously progressing. The purpose of this study is making advances in the recycling of waste concrete material for use as recycled aggregate to make secondary concrete product. Using recycled aggregates form demolished concrete, we manufactured cement bricks to experiment overall performance in Korean Standard and feasible performances. On the recycled cement, in the case of cement : aggregate is 1 : 7 is satisfied with KS F 4004 : dimensions, water absorption, compressive strength of quality of a standard. So we concluded that it has great feasibility to apply these products to construction industry.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2006년도 춘계학술논문 발표대회 제6권1호
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• pp.71-75
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• 2006

Problem of the environmental pollution and pollution by vast quantity occurrence of industrial waste by progress of industry is risen recently. Is real condition that waste foundry sand to be industrial waste that happen in casting industry of them has much the occurrence amount and the processing method is depending on most simplicity reclamation and so on. Therefore, by using waste foundry sand in the world by fine aggregate for mortar in recycling side of industrial waste necessity of development for new principal parts aggregate is risen along with rise of aggregate price by exhaustion phenomenon of natrual resources, wish to analyze physical and mechanical properties special quality and foretell practical use possibility availability.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2005년도 추계 학술논문 발표대회
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• pp.21-24
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• 2005

A by-product of construction can be easily reused through properly treatment. On the contrary, the level of technique to reuse the by-product is not so high. Especially, the bulky of trash concrete is huge. The demand and treatment cost of them is on the increase. So, the riffle effect of the recycle of the trash concrete cannot be bypassed. But the research on the recycle of them is few. Therefore, the reuse of recycled concrete, the treatment of them, and the promotion plan of them were suggested in this study

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2016년도 춘계 학술논문 발표대회
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• pp.201-202
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• 2016

Energetically-modified material using reject fly ash was manufactured to investigate the effect of the material on strength characteristic of cement mortar. In order to modify reject fly ash, a vibration mill was used. after grinding process, the defects in the alignment of atom was checked using transmission electron microscope. It was found that the compressive strength values of 28 days-cured specimens using energetically-modified reject fly ash (ERFA) were higher than that of mortar with non-ground reject fly ash.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2014년도 추계 학술논문 발표대회
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• pp.49-50
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• 2014

Dredged sea soil contains various contaminants. First priority to recycle dredged sea soil is to pretreat it to remove various contaminants because recycling dredge sea soil without any pre-treatment may cause a secondary contamination due to the leaching of hazardous chemicals. In this study, pretreated dredged sea soil was used to investigate pozzolanic activity. The properties of pretreated dredged sea soil were investigated, the method for heat treatment was determined, and the compressive strength of mortar using dredged sea soil was examined to evaluate pozzolanic activity. According to the results, pretreated dredged sea soil has some possibility to work as a pozzolanic material. When dredged sea soil was heat treated for 90min at 550℃, compressive strength was shown to be comparable to that of plain cement mortar.

• KIEAE Journal
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• 제7권5호
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• pp.127-133
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• 2007

Each year the amount of construction wastes increases at a rapid pace. Particularly, wastes from apartment housing projects that make up 89.14% of the total construction projects have increased about 48% as compared with those of the year 2000. Construction wastes are therefore rising as an issue related to environmental problems and disposal costs. And there are ongoing studies of the disposal, control and recycling of construction wastes. Mitigation measures for the wastes, however, have been a rare subject of research that focuses on waste-generating factors by activity during apartment housing projects. Given that, the purpose of this study was to categorize construction wastes by work type and to identify the factors causing wastes in order to reduce them. This study investigated the amount of the wastes from apartment housing constructions by activity as related to disposal costs, and examined causes in the ordering, transport, material management and construction stage, respectively. The analysis results will likely bring about expectation effects that help reduce the generation of the wastes by establishing action plans.

• 한국건축시공학회지
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• 제19권5호
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• pp.449-456
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• 2019

최근 비정형 건축물의 비중이 증가함에 따라 거푸집 재사용이 불가하여 건설폐기물이 증가하고 있는 추세이다. 또한 비정형 건축물 건축 시 생산자의 숙련도에 따라 비정형 패널의 품질이 결정되며 이에 따른 정확한 공사비 측정불가 및 인건비 증대라는 문제점이 있다. 본 연구는 이러한 비정형 건축물의 문제점을 보완하기 위하여 오차율이 적고 작업성이 좋은 최적의 배합을 찾는 것을 목표로 실험을 진행한다.

• 한국건설관리학회:학술대회논문집
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• 한국건설관리학회 2001년도 학술대회지
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• pp.311-314
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• 2001

한국전쟁 이후, 우리 군은 시설건설에 지속적으로 투자를 하였으나, 대부분의 군시설은 건설의 긴급성 때문에 장기적인 계획이 부족한 상태로 이루어진 경우가 많았다. 현재 군이 보유한 시설 중 경과연수가 20년 이상 된 노후 시설은 약 $25\%$를 차지하고 있으며, 이들은 원래의 기능을 제대로 수행하지 못하고 있는 실정이다. 최근 현대화 사업 등을 통하여 노후 군시설을 교체하고 있지만, 장기적인 관점에서 계획하고 유지관리 되지 못할 경우 국가예산의 낭비를 초래하고, 기존 시선의 철거로 인해 발생하는 건축폐기물에 의한 환경문제를 초래할 수 있다. 본 연구에서는 국가경제적인 낭비를 줄이고 군시설의 장수명화를 도모하기 위한 효율적인 유지관리방안을 제시하였다.

• 한국건축시공학회지
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• 제16권3호
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• pp.193-199
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• 2016

본 연구는 산업폐기물로 발생되는 굴 패각과 건식공정 바텀애시를 골재로 활용하여 제작된 내화보드의 가열실험을 통한 성능에 관한 연구이며 다음과 같은 결론을 도출하였다. 전기로 가열실험을 통해 나타난 시험편의 이면온도는 $300^{\circ}C$ 가열상황에서 $103.1{\sim}125.1^{\circ}C$로, $600^{\circ}C$의 가열상황에서 $201.1{\sim}210.1^{\circ}C$로, $900^{\circ}C$의 가열상황에서 $249.2{\sim}276.9^{\circ}C$의 범위로 나타났다. 내화보드 시험편의 경우 일정온도상승 이후 유지되는 것으로 나타나 사용재료들의 경우 내화성능이 발휘되는 것으로 판단된다. 실험의 결과로 유추할 때, 입자의 크기가 작을 경우 $600^{\circ}C$까지는 내화성능이 상대적으로 우수하지만, 그 이상의 온도에서는 입자의 크기가 큰 경우 많은 공극을 포함하여 열전달이 지연되는 것으로 판단된다.