Current Status of the Research on Construction and Demolition Waste Management

Rapid industrial development, mega construction projects and increased immigration are some of the reasons that the State of Qatar has recently generated an unprecedented amount of construction and demolition (C&D) waste in the country. The State is racing towards the Fédération Internationale de Football Association World Cup 2022, a fact that requires additional construction, for which it is expected to increase its rate of waste generation. Compared to other regions, there are relatively few studies in the literature that report on the C&D waste management issues of Qatar. The present work begins to address this gap by providing insights into the current state of C&D waste management practices in Qatar and by providing a mini-review on the benefits of using recycled aggregates which have only recently been allowed locally by Qatar Construction Standards. A Strengths, Weaknesses, Opportunities, and Threats analysis has been implemented, using data and information from various sources including governmental reports, industries, local waste management companies, as well as reported interviews with relevant stakeholders. Finally, several strategies were proposed and developed that could potentially be implemented by stakeholders and decision-makers, so as to improve the current status by encouraging more sustainable and viable practices.

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CURRENT STATUS OF CONSTRUCTION AND DEMOLITION WASTE MANAGEMENT IN VIETNAM: CHALLENGES AND OPPORTUNITIES

International Journal of Geomate ◽

10.21660/2018.52.7194 ◽

2018 ◽

Vol 16 (52) ◽

Author(s):

Nguyen Van Tuan

Keyword(s):

Waste Management ◽

Construction And Demolition Waste ◽

Current Status ◽

Demolition Waste ◽

Challenges And Opportunities

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Construction and demolition waste management in Korea: recycled aggregate and its application

Clean Technologies and Environmental Policy ◽

10.1007/s10098-021-02177-x ◽

2021 ◽

Author(s):

Jeonghyun Kim

Keyword(s):

Waste Management ◽

Social Needs ◽

Construction And Demolition Waste ◽

Recycled Aggregate ◽

Management Systems ◽

Current Status ◽

Demolition Waste ◽

Construction Waste ◽

The Republic ◽

Resource Circulation

AbstractConstruction and demolition waste generated in the Republic of Korea accounts for about half of the annual waste. The generation of construction waste is expected to increase gradually due to obsolete structures and reconstructions that have reached the end of their service life. Considering the geographical characteristics of Korea, where the land area is small and about 70% of which is mountainous, landfilling of waste is absolutely limited. Therefore, resource circulation such as recycling of construction waste is an urgent and important task. This paper overviews the current status of construction waste generation, treatment, and the flow of government policies in Korea. Furthermore, the current status, limitations, and stakeholder efforts regarding recycling of recycled aggregate from construction waste were reviewed. Data used in this paper were mostly collected from government reports, construction waste regulations, and research papers. The results show that construction waste management systems have been enacted and revised in line with social needs, and each stakeholder is making an effort to use the construction waste practically. The findings can provide valuable examples for countries that lack construction waste management systems. Graphic abstract

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Investigation of waste diversion rates in the construction and demolition sector in Australia

Built Environment Project and Asset Management ◽

10.1108/bepam-01-2020-0012 ◽

2020 ◽

Vol ahead-of-print (ahead-of-print) ◽

Author(s):

Shiyamini Ratnasabapathy ◽

Ali Alashwal ◽

Srinath Perera

Keyword(s):

Waste Management ◽

Descriptive Analysis ◽

Construction And Demolition Waste ◽

Current Status ◽

Accurate Estimation ◽

Demolition Waste ◽

Effective Measure ◽

Content Type ◽

Waste Diversion

PurposeWaste diversion rate (WDR) is a key indicator of effective waste management and circular economy. However, it has not yet been widely used in the construction and demolition waste (C&DW) sector. This study aims to promote the application of WDR as an effective measure for waste management through the investigation of the current status of C&DW diversion in the Australian construction industry.Design/methodology/approachA mixed-method approach, which combines a desk study and a case study of 12 residential projects was used in this study. Data retrieved from the National Waste Database (NWD) were used for the descriptive analysis.FindingsThe analysis of the national waste data revealed that the national average WDR in Australia is 64%. WDR varies based on material types and across the states. The analysis facilitated the forecasting of the possible future trend of waste diversion in Australia. The studied projects from two states in Australia presented slightly different results. Most of the waste stream, except mixed waste, presented above 95% of WDR in each project.Research limitations/implicationsAlthough the studied projects showed a higher recycling rate, this study claims that achieving a higher rate of recovery by diverting the waste could not be assured unless accurate estimation is carried out with reliable and verifiable data. Lack of reliable data is considered as the limitation of this study. While the scope of descriptive analysis of waste generation and diversion covers the whole country, the case study analysis is limited to the states of New South Wales and Victoria.Originality/valueThe study highlights the significance of WDR in assessing the performance of effective waste management in the C&DW sector. WDR is a comprehensive measure that takes the output of the waste life cycle into account for benchmarking waste management. The results provide a critique of the current practices of waste management and the essence of the consistent, transparent and verifiable waste data to enable accurate WDR estimation in Australia. The outcome is useful for waste managers and policymakers in developing potential waste management strategies and C&DW specific legislation for building a more ecologically sustainable industry.

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