건설폐기물에 대한 관련 주체별 인식조사를 위한 기초연구

조현욱(Jo Hyeon-Wook),정인수(Jung In-Su),이찬식(Lee Chan-Sik) 대한건축학회 2009 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.29 No.1(구조계)

By-product and construction waste in construction site are doing to damage earth environment including soil, water, air etc,. Public official, contractor and waste management are concerned in construction waste management process since waste occurrence. Each stakeholder has different notion about construction waste management, but systematic research of this has not accomplished before. This study's purpose is to deduce construction waste processing problems systematically by a study for stakeholders' perception investigation on construction waste. So, this study analyzed domesticㆍforeign construction waste condition through former study, deduced problem of construction waste management and related law, interviewed with stakeholders of construction waste, and modified the problem list. By the result, this study deduced problems of 18 item in 3 section. That is “lack of understanding about storage and lading rule", "recycling way is less", "complicated document" etc. In this study, had deduced construction waste processing problems, and problems list may be used to basis data of next study. In the future, it is necessary to analyze quantitatively problems and a related improvement. And also, a study for construction waste reduction must is necessary.

Quantification of construction waste prevented by BIM-based design validation: Case studies in South Korea

Won, J.,Cheng, J.C.P.,Lee, G. Pergamon Press ; Elsevier Science Ltd 2016 Waste management Vol.49 No.-

Waste generated in construction and demolition processes comprised around 50% of the solid waste in South Korea in 2013. Many cases show that design validation based on building information modeling (BIM) is an effective means to reduce the amount of construction waste since construction waste is mainly generated due to improper design and unexpected changes in the design and construction phases. However, the amount of construction waste that could be avoided by adopting BIM-based design validation has been unknown. This paper aims to estimate the amount of construction waste prevented by a BIM-based design validation process based on the amount of construction waste that might be generated due to design errors. Two project cases in South Korea were studied in this paper, with 381 and 136 design errors detected, respectively during the BIM-based design validation. Each design error was categorized according to its cause and the likelihood of detection before construction. The case studies show that BIM-based design validation could prevent 4.3-15.2% of construction waste that might have been generated without using BIM.

Practitioners' Perception on Relationship between Production Planning and Waste Occurrence in Construction Projects

Khanh, Ha Duy,Kim, Soo Yong Korea Institute of Construction Engineering and Ma 2014 Journal of construction engineering and project ma Vol.4 No.3

Construction management has been suffering from many problems, which need to be solved or better understood. Most of construction projects have not achieved efficiency as expected. In this context, waste was also considered as a problem of efficiency decrease, and poor production planning was considered as a cause for waste. This study was conducted on the basis of waste concepts and production planning processes based on the philosophies of Lean Construction. A survey to find out the relationship between them was carried out through questionnaire, which was answered by experienced people in construction projects. The results have shown that frequency of wastes occurrence is quite high, and production planning processes are superficially performed in construction phase. There is a significant negative relationship between production planning and waste occurrence (r = -0.262). Weekly Work Plan (WWP) is the most dominant plan for waste control with seventeen in total of nineteen waste factors, and phase plan is the most dominant plan for two remaining waste factors. A case study was adopted to validate the relationship between production planning and waste occurrence. The results showed that the better the project was planned, the fewer the waste would occur on construction sites.

BIM과 RFID 기술을 활용한 건설 폐기물 관리 방안

단신,안이슬,함남혁,김재준 한국BIM학회 2022 KIBIM Magazine Vol.12 No.2

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.

A Study on Separation of Woods from Construction Waste by the Double-cyclone Wind separator and High-precision Near Infrared Analysis System

( Sangkeun Kim ) 한국폐기물자원순환학회(구 한국폐기물학회) 2019 ISSE 초록집 Vol.2019 No.-

Waste wood contained in construction waste would possibly be used as a fuel or recycled material in other industries. The combustible materials including paper, textile, plastic, vinyl or synthetic resins could be used as subsidiary fuel or recycled material. In this study, we focus on developing a technique to classify and separate the combustible wastes(especially, woods) from the mixed construction and demolition (C&D) waste. Two systems are considered. The first one is composed of 1) cistern and airdrying separator to classify large sized combustible waste 2) rake-brush type separator to classify small sized combustible waste and 3) NIR method to separate wood waste. The second one is conducted under the dried condition and is composed of 1) Jaw & impact crusher to crash waste and 2) 2 stage-seperator & NIR method to maximize the efficiency of combustible waste separation. The NIR (Near Infrared) is part of the infrared range in the electromagnetic radiation spectrum, with wavelength limits at 0.8 and 2.5 μm. A large number of substances exhibit typical spectra for their composition and properties in this spectral range which can be measured with NIR spectrometers and interpreted qualitatively and quantitatively. NIR is a sophisticated system for automatically picking mixed potential recyclables and refuse. This system is equipped with a fast and high-precision near infrared analysis combined with a computer controlled discharging system. As a result of the evaluation on combustion characteristics, activation energy of wood pellet and timber wood are higher. Thus, it can be considered that timber wood would be a main factor as a combustion of mixing various kinds of wood.

현장조사를 통한 건설폐기물 재활용 실태 분석

최두성(Choi Doo-Sung),문성환(Moon Sung-Hwan),조균형(Cho Kyun-Hyong) 대한건축학회 2008 대한건축학회논문집 Vol.24 No.4

This study is intended to calculate the actual recycling ratio of construction waste generated on site of the final disposal company. It is also analyzed the construction waste of the final disposal company, as well as aiming to ultimately analyze the actual disposal state of Korea's construction waste. According to on-site research on the middle disposal company, the average recycling ratio, reclamation, and incineration of brought in waste were 95.6%, 4.2%, and 0.01%. As the result of on-site research on the middle disposal company, disposing ratio of construction waste was shown at 4.2% lower in recycling percentage when compared to statistic data of Ministry of Environment, Republic of Korea(year 2005, in metropolitan area) and 4.0% and 0.01% higher in reclamation and incineration compared to the data. These differences seem to be because export data of waste in simple construction fields were only applied in the process of the current statistic data calculation. Actual results of construction waste's final disposal company was not reflected. Therefore, in order to improve efficiency of the government's construction waste-related policy, it is judged there needs to be improvements in current disposal methods.

물질재활용률 향상을 위한 건설폐기물 성상별 분류 및 발생 원단위 산정에 관한 연구

김병일(Kim, Byoung-Il),송태섭(Song, Tae-Hyeob),이세현(Lee, Sea-Hyun) 대한건축학회 2013 大韓建築學會論文集 : 構造系 Vol.29 No.12

The quantity of construction wastes have been continuously increasing 178,120ton/day in 2010 compared to 148,489ton/day in 2004 such as concretes, asphalt concretes, metals, woods, synthetic resins, etc due to increased demolishing old apartments and expanding social facilities. Therefore, national efforts including department of environment, many universities and research centers have been studying to establish an effective system for reducing amount of waste, as well as improving rate of material recycle of construction wastes. One of the very best is to set up the exact basic unit of construction wastes for both new construction and demolition work. The purpose of this study was to classify construction wastes based on rate of material recycle and analyze basic unit of new construction and demolition work from analysis of a lot of data from construction company, as well as a field study. The types of construction wastes were classified into six for new construction and five for demolition work. The results for units of construction wastes showed that generation of concrete classes and mixed wastes was significantly greater than others specifically, apartment buildings. In conclusion, exacting separation and sorting efforts at on-site require to reduce waste amounts and activate rate of material recycle, as well as efforts on establishing systemized management.

건설폐기물내 재활용 목재류 선별을 위한 풍력 및 광학선별 연구

김상근 ( Sang-keun Kim ) 한국폐기물자원순환학회(구 한국폐기물학회) 2019 한국폐기물자원순환학회 춘계학술발표논문집 Vol.2019 No.-

Waste wood contained in construction waste would possibly be used as a fuel or recycled material in other industries. The combustible materials including paper, textile, plastic, vinyl or synthetic resins could be used as subsidiary fuel or recycled material. In this study, we focus on developing a technique to classify and separate the combustible wastes (especially, woods) from the mixed construction and demolition (C&D) waste. Two systems are considered. The first one is composed of 1) cistern and air-drying separator to classify large sized combustible waste 2) rake-brush type separator to classify small sized combustible waste and 3) NIR method to separate wood waste. The second one is conducted under the dried condition and is composed of 1) Jaw & impact crusher to crash waste and 2) 2 stage-seperator & NIR method to maximize the efficiency of combustible waste separation. The NIR (Near Infrared) is part of the infrared range in the electromagnetic radiation spectrum, with wavelength limits at 0.8 and 2.5 μm. A large number of substances exhibit typical spectra for their composition and properties in this spectral range which can be measured with NIR spectrometers and interpreted qualitatively and quantitatively. NIR is a sophisticated system for automatically picking mixed potential recyclables and refuse. This system is equipped with a fast and high-precision near infrared analysis combined with a computer controlled discharging system. As a result of the evaluation on combustion characteristics, activation energy of wood pellet and timber wood are higher. Thus, it can be considered that timber wood would be a main factor as a combustion of mixing various kinds of wood.

건설폐기물의 물질흐름분석을 통한 실질 재활용률 산정 연구

고영재,장용철 한국폐기물자원순환학회 2016 한국폐기물자원순환학회지 Vol.33 No.5

In this study, the recycling processes of construction and demolition waste (C&D waste) were analyzed, and its national recycling rate was determined using material flow analysis (MFA). Available statistical data provided by Ministry of Environment and Korea Environment Corporation were used for the MFA study. The collected data were carefully examined and validated by field investigations. System boundary for MFA covered from waste generation from construction sites to final disposal in 2013. The field investigation showed that recycled aggregate is produced through mechanical shredding, separation, and screening processes of C&D waste. The production efficiency (or process yield) was estimated to be approximately 81.2% on average. The foreign materials in the waste accounted for 18.8% by weight. The separated impurities were sent to recycling facilities, incineration facilities, or landfill sites, depending on the physicochemical characteristics. Efficiency of recycling facilities and the statistical data were integrated to estimate the national actual recycling rate, which turned out to be 87.7% in 2013. Approximately 49.1% of the construction-related waste was recycled as recycled aggregate for concrete production and road base layer for asphalt pavement. Based on the result of MFA, there is 9.8% difference between the actual recycling rate in this study and reported recycling rate by national statistics. In the future, more various C&D waste treatment and disposal facilities, along with aggregate recycling facility, should be investigated to verify the actual recycling rate determined by this study. Statistical accuracy should be further refined through additional field investigations. Our findings can be applicable to development of recycling policies and best management practices for C&D waste streams.

A Study on the Characteristics of Construction Wastes Generated from Demolition of Buildings in the Housing Environment Amelioration District

Byeung-Hun Son,Won-Hwa Hong 대한건축학회 2013 Architectural research Vol.15 No.1

The amount of construction waste increased to 176,447 ton/day in 2008 from 28,400 ton/day in 2000, a 6-fold increase in just 10 years. Such dramatic increase in the waste of concrete, asphalt concrete, wood and metals was due to demolition of old buildings as well as a great number of building redevelopment projects and hurried city industrialization. Many buildings targeted for demolition today were built in line with the government policy to provide affordable housing to citizens in the shortest time possible and consequently, said buildings underwent rapid deterioration and required periodic repairs and reconstruction. Based on the above, we predict that construction waste will continue to increase for the foreseeable future. In particular, due to limited availability of suitable space to construct apartments and residential buildings in the city, old buildings are being torn down to make space for new development, further increasing construction waste. In light of that, efforts to recycle as well as reduce generated waste are urgently required.