• 한국재난정보학회 논문집
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• 제4권1호
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• pp.86-100
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• 2008

It is needed to classify the kinds of construction and demolition(c&d) debris to 6 catagories of waste concrete, waste asphalt concrete, waste wood, scraps, combustible waste and incombustible waste in order to properly do a separate discharge and to estimate unit generation rate in construction site. Also, in this case, the unit treating cost for mixed wastes should be applied with the unit treating cost for combustible waste. The construction standard materials estimation data is used for basic data for estimating unit generation rate. The mixed wastes in this data should be classified to waste wood, combustible waste and incombustible waste, and their ratio is obtained by using the unit generation rate of Asia Pacific Environment and Management Institute and Seoul Metropolitan Development Institute. The waste amounts generated from newly-built construction can be obtained from multiplying the loss rate by the amount of materials used from construction standard estimation data. Also, those from dismantling construction can be obtained by subtracting waste amount generated during newly-built construction from total input amount of materials in newly-built construction. Those in two cases can be used in construction site. It can be used for estimating the amount generated and establishing the treating plan in the case of setting up the policy of waste management and doing the environment impact assessment.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2021년도 봄 학술논문 발표대회
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• pp.309-310
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• 2021

In order to respond to environmental problems and to efficiently recycle resources, it is important to evaluate the amount of construction waste generated. In particular, the estimation of the amount of waste generated in the demolition work was performed based on the basic unit of waste generated per floor area. This study proposes a method using drones as a method for evaluating the amount of demolition waste in a wide area. In the simulated application, the field measurement results and the proposed method were compared, and the effectiveness of the building volume calculation using drones was confirmed. It was confirmed that the building volume can be calculated quickly in the additional pilot application.

• 대한건축학회논문집:구조계
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• 제36권4호
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• pp.153-161
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• 2020

This study investigates the recycling potential of demolition waste (DW) according to building structure, while considering economic aspects. For that, this study surveyed 1,034 residential buildings to collect reliable information on demolition waste generation rates (DWGRs). This study suggested a method for operational cost calculation for each stage and carried out an inventory analysis. The economic value of recycled DW materials was also calculated. And then, the recycling potential(RP) was calculated by building structures and waste types. RP by building structure was low (27-40%), and RP was found in the order of masonry-block, wooden, RC and concrete-brick. By type of DWs, the RP of aggregates was considerably lower than 7%, and DWs such as wood, plastics, and metals showed more than 100% RP. Considering the results of this study, In order to improve the RP of buildings and DWs, the diversification of products that recycled waste like aggregates (i.e., mortar, concrete, bricks, blocks, tiles) and the development of high value-added products are considered to be the most urgent problems. Based on the above RP results, this study proposed a more advanced method for life cycle assessment of buildings and demolition waste.

• 한국BIM학회 논문집
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• 제12권2호
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• pp.26-39
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• 2022

The purpose of this study is to establish a novel system for on-site management of construction and demolition waste. Construction waste has always been one of largest waste in the world and has long lacked an effective management system. Although various countries have planned the disposal of waste at the political level, the real-time and effective management of construction sites has not been mentioned. Especially in China, the continuous development of the construction industry also generates a large amount of waste, and China is not prepared for a large amount of construction waste. In order to alleviate the huge impact of construction waste on society and the environment, this study proposes a waste management method that combines Building Information Modeling technology and Radio Frequency Identification technology. Through this research, by using information technology to manage the generation and discharge of construction waste, and record the amount and information of waste generation, also improve the management method of construction waste.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2021년도 가을 학술논문 발표대회
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• pp.219-220
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• 2021

It is considered that the construction industry is one of the pivotal players in the national economy in terms of Gross Domestic Production (GDP) and employment. Behind the positive role of this industrial sector to the national economy, the construction industry generates approximately 50 % of the total waste generation from all the industrial sectors. There are several measures to mitigate the adverse impacts of the construction waste such as reduce, reuse and recycle. Recycling would be one of the effective strategies for waste minimisation, which would be able to reduce the demand upon new resources as well as enhance reusing the construction materials on sites. The automated construction waste classification system would make it possible not only to reduce the amount of labour input but also mitigate the possibility of errors during the manual classification process. In this study, we proposed an automated waste segmentation and classification system for recycling the construction and demolition waste in the real construction site context. Since the practical application to the real-world construction sites was one of the significant factors to develop the system, a YOLACT (You Only Look At CoefficienTs) algorithm was chosen to conduct the study. In this study, it is expected that the proposed system would make it possible to enhance the productivity as well as the cost efficiency by reducing the manpower for the construction and demolition waste management at the construction site.

• 한국건설순환자원학회논문집
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• 제12권2호
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• pp.222-228
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• 2024

이 연구에서는 건축물 분별해체 제도 도입에 따른 사회적 편익을 분석하고자 하였다. 이를 위하여 연면적 2,400 m²의 공동주택을 대상으로 산출된 분별해체 수익 및 비용을 토대로 국가전체의 증분수익, 증분비용, 증분이익을 도출하였다. 2,400 m²를 대상으로 분별해체 공사를 실시할 경우, 해체공사 시공비용의 증가액, 혼합폐기물의 감소로 인한 발생 폐기물 처리 비용 저감액, 분리·선별한 폐기물을 활용한 재활용으로부터 얻을 수 있는 수익을 종합적으로 검토하였을 때, 일반 해체공사와 비교하여 총 34,727천원의 비용 절감 효과가 예상됨을 확인할 수 있었다. 이를 건설폐기물 발생량이 가장 많았던 2020년을 기준으로 국가 전체적으로 환산한다면 746,782,886천원의 사회적 편익이 발생함을 추정할 수 있었다.

• 한국건축시공학회지
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• 제22권6호
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• pp.681-688
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• 2022

본 연구에서는 도면정보나 건축물 정보가 불확실한 노후 지역의 건설폐기물 발생량 예측을 위하여 드론촬영, 자동 체적 산출, 연면적 간접 변환, 폐기물량 예측의 과정을 QGIS 플러그인 형태로 구축하였다. 이를 위해 모의검증을 통하여 드론 활용 자동 산출된 체적과 현장실측 기반 BIM 체적과의 높은 일치성을 확인하였다. 실제 해체예정지를 대상으로 현장검증을 실시하고 드론 기반 체적과 실측-BIM기반 체적의 일치성을 재확인하였다. 층고와 건축물 유형 설정을 통하여 폐기물 발생 원단위를 적용하고 직간접적인 방식으로 폐기물량을 산출하였고, 전체 과정은 드론 촬영과 산출 자동화 과정을 포함하여 면적 1,200,000m² 대상지를 6시간 이내의 작업시간으로 신속하게 처리하였다. 비록 건축물 정보와 드론을 통한 건물 객체의 차이는 가설물, 적재물, 층고 설정에 따라 오차가 발생하였지만, 실제 해체물량도 최초 예측보다 더 크게 발생할 것으로 파악되었으며, 향후 사례조사를 통하여 체적-연면적 변환의 정확도 향상에 대한 개선이 필요할 것이다.

• 한국폐기물자원순환학회지
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• 제35권8호
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• pp.785-798
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• 2018

Since the Framework Act on Resource Circulation was enacted in 2018, the government should establish a National Resource Circulation Master Plan every 10 years, which defines mid- to long-term policy goals and directions on the efficient use of resources, prevention of waste generation and recycling of waste. In addition, we must set mid- to long-term and stepwise targets for the final disposal rate, recycling rate (based on sorted recyclable materials and recycled products), and energy recovery rate of wastes, and relevant measures should be taken to achieve these targets. However, the current industrial waste (IW) statistics have limitations in setting these targets because the final disposal rate and recycling rate are calculated as the ratio of the recycling facility input to the IW generation. In this study, the material flow from the collection stage to the final disposal of industrial waste was analyzed based on the generation of 2016, and the actual recycling amount, actual incineration amount, final disposal amount and their rates were calculated. The effect on the recycling, incineration and final disposal rates was examined by changing the treatment method of nonhazardous wastes from the factory and construction and demolition wastes, which were put in landfills in 2016. In addition, the variation of the waste treatment charge was investigated according to the change of treatment methods. The results of this study are expected to be effectively used to establish the National Resource Circulation Master Plan and industrial waste management policy in the future in South Korea.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 2008년도 춘계 학술발표회 제20권1호
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• pp.937-940
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• 2008

골재자원의 부족과 폐기콘크리트의 증가로 인하여 순환골재사용의 필요성이 증가되고 있다. 그러나 순환골재의 건조수축으로 인한 균열등과 같은 문제점이 지적되어 이에 대한 연구가 요구되고 있다. 따라서 본 연구에서는 순환골재에 관한 연구의 일환으로 순환잔골재를 활용한 섬유 보강 콘크리트의 소성 및 초기 건조수축균열을 판상-링형구속수축시험 및 모의부재 옥외폭로시험을 통하여 측정하였다. 그 결과 판상-링형구속수축시험의 경우 순환잔골재를 사용한 콘크리트가 천연 잔골재보다 균열발생이 크게 나타났으며 섬유혼입의 경우 무혼입보다 높은 균열 저감성능을 나타내었다. 모의부재 실험에 있어서도 판상-링형구속수축시험과 유사하게 순환잔골재를 사용한 콘크리트가 균열발생이 큰 것으로 나타났으며 섬유 혼입의 경우 높은 저감 성능을 나타내었다.

• 한국건설순환자원학회논문집
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• 제5권4호
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• pp.427-434
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• 2017

건설폐기물의 발생은 해체단계와 신축단계로 구분할 수 있으며 대부분의 폐기물은 해체단계에서 발생하고 있다. 그러나 최근 국내 신축 건설공사가 연간 150조 규모로 확대됨에 따라 신축공사가 급격하게 증가하고 있다. 특히 건설폐기물 배출이 많은 건축공사의 규모가 100조를 초과함에 따라 신축현장에서의 건설폐기물 발생량에 대한 관리가 요구되고 있다. 신축현장은 해체공사 현장과 달리 발생된 폐기물을 성상별로 분리하여 배출이 가능하며, 상대적으로 이물질 함량이 적게 발생한다. 본 연구에서는 신축현장의 건설폐기물 성상별 발생량을 조사하고, 이를 바탕으로 건설폐기물 발생 원단위를 산정하고자 하였다. 또한 기존 발생 원단위가 콘크리트와 혼합폐기물 중심으로 되어 있어 합성수지, 폐목재, 폐보드류를 추가적인 항목으로 설정하여 원단위 설정을 하였다. 원단위 조사는 총 공사 기간별 발생하는 성상별 폐기물 조사를 실시하였다. 조사결과 신축건설현장은 초반 30%까지와 70% 이후의 공정에서 대부분의 폐기물이 배출되는 것으로 보사되었으며, 혼합건설폐기물의 비율이 45%로 높게 나타났다. 원단위 분석결과 본 연구에서 산출한 결과는 기존의 표준 품셈에 비하여 약 1.9배의 폐기물이 배출되는 것으로 나타났다.