Factors that affect sustainable construction waste management efforts at site

The sustainable management of construction waste represents a major challenge in promoting the circular economy. Construction is responsible for a significant amount of waste, and its proper management is essential to minimize environmental impact and create an efficient circular system. This article examines the challenges and opportunities associated with the sustainable management of construction waste. Challenges include the diversity and complexity of materials used in construction, as well as the need to develop adequate infrastructures for waste collection, sorting and recycling. However, there are also many opportunities in promoting the sustainable management of construction waste. The circular economy offers the opportunity to turn waste into valuable resources through recycling, reuse and reuse. To fully exploit these opportunities, collaboration between the public and private sectors is required, as well as the development of coherent policies and regulations for the management of construction waste. In conclusion, the sustainable management of construction waste represents both a challenge and an opportunity in promoting the circular economy. By adopting effective strategies and policies, implementing innovative technologies and involving all stakeholders, we can help reduce the impact of construction waste on the environment and build a more sustainable future. This paper was supported by the State Program 20.80009.0807.22 Development of the mechanism for the formation of the circular economy in the Republic of Moldova.

Residents’ waste management practices in a developing country: A social practice theory analysis

Aims: To Identify sustainable Biomedical solid waste management practices in the context of limited resources in selected HCFs in Douala, Cameroon.
 Study Design: A cross-sectional survey with quantitative and qualitative study design was adopted for data collection from workers in the HCFs and also identifying the process of waste management.
 Place and Duration of Study: This study was carried out in the some selected HCFs in the Douala region of Cameroon between January 2023 to June 2023.
 Methodology: Study respondents were working in different sections of the HCFs and comprised of the following categories: doctors, laboratory scientists, cleaners, nurses and administrative/clerical workers. Field visitations and interactions with HCFs officials took place during the random sampling technique which was used in determining the sample size of 200 workers, Out of the sample size of 200 who were given questionnaires in order to provide data for the study, 150 valid mail questionnaires were retrieved and used for analysis. Every questionnaire was verified by validity. There’s also questions related funds, facilities availability, training and personal protective equipment. All of the data were coded and analyzed. The results were calculated based on sums and percentages of variables with SPSS vers.26 software and chi-square analysis with the level significance of p-value less than 0.05 was analyze
 Results: This finding could also indicate that imbibing sustainable biomedical wastes management practices increases with higher experience in the hospital. Furthermore, communal bin disposal of biomedical wastes was the only statistically significant category under disposal method, indicating that waste disposal may be lacking in terms of sustainable practices. [30] also identified biomedical wastes disposal in open dumps among health workers in Saudi Arabia, attributable to poor sustainable waste training and lack of regulatory frameworks. I PCA results indicate that there are two dimensions of prevalent biomedical wastes in the hospital studied, as explicated by the two components retained
 Conclusion: The limited resources and government policies and local councils influences sustainable waste management practices and this paper aimed at identifying some of the solutions towards improving Sustainable waste management policies. The practice of biomedical waste management in the study area was low. Level of education, taking training on biomedical waste management, availability of color-coded three bins, and attitude of health care workers were significantly associated with biomedical waste management practices. Hence, in-service training is recommended to improve biomedical waste management practices.

It is widely accepted that solid waste management is a global problem. This problem is even more pronounced in developing countries such as Nigeria where solid waste management is a major concern. In recent times, however, there has been a concerted effort towards engaging members of the public in solving the waste management crisis. This effort is centred on public participation in sustainable waste management practice across the country. Nevertheless, in Abuja there seems to be low public participation in sustainable wastes and environmental management practice. This paper therefore seeks to investigate the rate of participation in sustainable waste and environmental management activities in Abuja. In order to achieve the aim of the study, the paper relied on a sample of 57 participants to obtain some primary data. The paper employed a mixed method approach with the aid of a questionnaire. The questions were designed to gather data on demographics of the participants, their awareness and attitude to sustainable waste management, the barriers preventing public participation in a sustainable solid waste management and measures that can encourage public participation in sustainable waste management in Abuja. The study revealed that increase funding, provision of recycling collection points, enforcement of laws and policies, the development of effective policies and regulatory framework amongst others are some of the measures that can encourage public participation in sustainable waste management programs in Abuja.

The uncontrolled generation of construction waste happened due to the rapid development of the construction industry become one of the significant environmental issues in Malaysia. Therefore, sustainability was applied in construction waste management strategies. Sustainability in construction waste management emphasized the relevance of co-development in the economy, environment, and society and helped to achieve harmony in the economy, environment, and society. Therefore, this research was conducted with the aims to identify the causative factors of construction waste, determine the construction waste management strategies, and discover the relationship between the causative factors of construction waste and construction waste management strategies towards sustainable construction waste management improvement. In this regard, this research was conducted quantitatively using the questionnaire as a research medium to obtain feedback from the construction organizations on the causative factors and management strategies of construction waste towards sustainable construction waste management improvement. The developed questionnaire was distributed via a virtual method among project managers as representatives of construction organizations operating in Penang. As a result, 29.6 percent of the response rate was accepted. The analysis showed that the management factor, regulation factor and prevention strategy was important factors and strategies for sustainable construction waste management improvement and found that there was a strong relationship between them. Finally, this research outlined strategies to achieve sustainable construction waste management improvement in the construction industry and create a better environment.

The effectiveness of the implementation of construction waste reduction through 3R reflects the sustainability in construction waste management. Weak implementation of construction waste reduction through 3R among contractors will lead to unsustainable construction waste management. Increase in construction waste on landfills is critical especially on islands where land is very limited for solid waste disposal. This aim of this paper is to investigate current practice of construction waste reduction through 3R practice among contractors in Penang, Malaysia. The findings reported herein is based on feedbacks from 143 construction contractors of grade CIDB G7, G6 and G5 in Penang and experts from Penang Local Authority, CIDB in Penang and its Headquarters, National Solid Waste Management Department, and Headquarters of Solid Waste and Public Cleansing Management Corporation. Interviews and questionnaire surveys have been found that 3R practice is not mandatory in construction waste management in Penang. Only 39.8% construction contractors practiced 3R in managing their waste. Therefore, 3R practices should be emphasized in construction industry. Reducing wastes through 3R practices in construction industry is a way forward towards sustainable construction waste management especially in expanding the lifetime of landfill.

Estimating the sustainability returns of recycling construction waste from building projects

The purpose of this study is to investigate and establish a regulatory model for managing household waste with a public health approach. The research employs a statutory approach combined with a comparative methodology to analyze and explore the connections between law and other social institutions. Various laws and regulations are directly associated with waste management, including Law No. 32 of 2009 on Environmental Protection and Management and other similar legislation. The enforcement of these laws and regulations in waste management relates to three legal systems: structure, substance, and legal culture. The study’s results show that the enforcement of environmental law in waste management is a blend of legal structure, legal substance, and legal culture. It can also be studied from both preventive and repressive sides. The study highlights the importance of implementing sustainable waste management practices to reduce environmental pollution and minimize health risks to the public. Through legal intervention, sustainable waste management practices can become standardized and be effectively enforced, leading to cleaner and safer living environments. The study concludes that preventing and responding to waste management issues requires a comprehensive approach that includes legal measures, as the implementation of laws and regulations plays an essential role in ensuring responsible waste management practices and protecting people’s health.

The management of construction and demolition waste is a critical concern for sustainable urban development and environmental conservation. In this review, the authors provides an overview of the involvement of machine learning techniques like the support vector machine (SVM), artificial neural networks (ANNs), Random Forest (RF), K-nearest neighbor (KNN), deep convolutional neural networks (DCNNs), etc. in the estimation, classification, and prediction of construction and demolition waste, contributing to the advancement of sustainable waste management practices. The authors observed that the DCNN achieved an outstanding accuracy of 94% in the estimation and classification of construction waste. Based on the authors’ observations, the machine learning models are well suited for the prediction or classification of construction waste and are good for sustainable waste management in the future. This paper provides insights into the promising future of machine learning in revolutionizing waste management practices and future research.

This study shows that there is no systematic review of research progress in literature throughout the field of sustainable construction waste management by 3R (reduction, reuse, and recycling) A lifecycle approach, The need for processes, strategies, rating systems and policies for robust and efficient waste management is widely recognized. The paper aims to evaluate. A review of sustainable construction waste management in Malaysia to maximize the 3R and reduce the disposal of construction waste by implementing a sustainable strategy throughout project lifecycle. Managing landfill shortages and long-term negative environmental economic and social effects of sustainable waste disposal are now becoming crucial for the sustainability of public health and natural ecosystems. To make adjustments, causes and factors responsible for sustainable construction waste management and progress in moving towards sustainability, it is therefore important to define the existing waste management system and causative factors adopted by industries. It allows a major shift in waste management of Malaysia by improvising current technology for waste management in a much more sustainable way. Furthermore, this ongoing research would develop sustainable construction waste procedures to sustain environmental, economic and social development for a Malaysian construction project.

Sustainable construction has become a top priority in most developing countries including Malaysia. With the rapid development progress in Malaysia, construction waste continues to rise and putting pressure on the social, economy, and environmental sustainability of the nation. Effective construction waste management (CWM) is crucial for achieving the sustainability goals. A well-designed waste management strategy is essential to minimise the environmental impact of waste generation for a more resilient built environment. Past researchers have identified a lack of systematic procedures for CWM and implementation by contractors. This research aims to address this gap by developing a procedural framework for implementing the 6R approach - refuse, reduce, reuse, recycle, recovery, and reflect in the local construction waste management. An extensive literature review on the CWM practices was conducted followed by a preliminary focused-group interview with the Solid Waste Management and Public Cleansing Corporation (SWCorp). A draft procedural framework focusing on 6R waste management was developed following the pilot group studies. To improve the developed framework, semi-structured interviews with the main contractors were conducted for their insights on the current practices and challenges faced in construction waste management, and the feasibility of the proposed procedural framework. The interview findings showed great support to the developed procedural framework with little recommendations incorporated. A final procedural framework was then concluded for implementation. This study presents a significant opportunity for the main contractor in practising sustainable construction waste management (SCWM) through the recommended procedural model.

As the construction industry grows, it produces large volumes of construction waste, which has a tremendous environmental impact and generates public concern in the neighbouring towns. The construction industry generates a significant volume of waste and faces a challenge with poor construction waste minimisation in order to prevent adverse environmental and dumping impacts worldwide. In developing countries, regional waste management systems have increased problems. Environmental pollution (air, water, and soil) and human health issues are caused by waste produced in a country as a result of different cultural, social, and religious activities. Prior studies were reviewed to choose dimensions and items for the data gathering instrument. A pilot test was conducted to identify potential questionnaire adjustments, and hypotheses were tested using structural equation modelling (SEM). A total of 220 Malaysian construction professionals answered the survey, which yielded the results. Five hypotheses have direct correlations based on the findings, three of which have a significant effect. Furthermore, the findings reveal that policy-related factors mediate the relationship between improving factors and sustainable construction waste minimisation. In contrast, they did not mediate the relationship between current practices/generation and sustainable construction waste management. The established framework can help improve construction waste management and help achieve global sustainable development goals. The data reveal that adopting preventive plans to reduce construction waste is one of the most important aspects of enhancing profitability. This study could aid construction industry players in evaluating waste management components during the construction and design stages of a building project.

PURPOSE Current studies show that contractors face persistent challenges in balancing cost efficiency with sustainable waste management practices. There is a paucity of literature regarding contractors’ waste management practices, especially in developing nations like South Africa. This study seeks to investigate cost efficiency and sustainability in contractors’ Waste management practices in construction 5.0 to achieve human-centric sustainable construction in the South African construction sector of the Eastern Cape Province. DESIGN / APPROACH / METHODOLOGY A quantitative research approach was used to collect data from 105 useful respondents in the South African Construction sector of the Eastern Cape Province. A relatively important index (RII) was used in this study to rank variables. Principal component analysis (PCA) was adopted to reduce a large number of variables into a smaller set of uncorrelated variables. FINDINGS The findings from descriptive statistics reveal saving contractors’ finance in the long run, waste disposal costs are a significant consideration, and prioritising short-term savings over long-term benefits as the most significant waste management practice. PCA show the following components: Budgetary Pressures, balancing resource use and financial outcomes in waste management, and cost-sensitive attitudes toward waste management in construction 5.0. RESEARCH LIMITATIONS / IMPLICATIONS The study also highlights limitations, such as geographical constraints, and contractor variability, which may impact the widespread implementation of proposed waste management practices. The research provides actionable insights for policymakers, industry practitioners, and contractors seeking to optimise waste management while maintaining financial viability. ORIGINAL / VALUE This study contributes to the growing body of knowledge on sustainable construction by uniquely integrating Construction 5.0 principles into waste management practices, a relatively underexplored area in the South African construction sector.

Solid waste management in urban areas in Malaysia is a critical issue that requires immediate attention. Waste management in Malaysia will become even more complex and difficult in the future due to the tremendous growth of the economy, urban population, and consumption patterns. The primary issue in this situation is the growing amount of waste production, which is outpacing the growth in disposal capacity. The Malaysian government has introduced the Waste Separation at Source Initiative (SSI), which mandates the Malaysian community to sustainable waste management practices in their daily lives. However, most urban Malaysians are unaware of these environmentally friendly waste management practices, despite the government's numerous attempts. Therefore, how to motivate the Malaysian community to adopt sustainable waste management practices has been of concern. A variety of persuasive technologies (PT) applications have been developed within sustainable HCI to promote sustainable waste management. However, its effectiveness among the urban community in Malaysia remains unknown. Accordingly, to develop an effective persuasive application for sustainable waste management, this study attempts to investigate end-user perspectives on effective persuasive design principles based on the Persuasive System Design (PSD) model. In-depth interview sessions were conducted with seven (7) participants, aged 31 to 47 years residing in various regions in Klang Valley. During interview sessions, participants were presented with several user interfaces (UIs) of waste management applications showing how each persuasive design principle had been applied. Next, we conducted a thematic analysis of positive and negative reviews of end-users to identify effective persuasive design principles to encourage sustainable waste management. Our results uncover 20 positives, 3 negatives, and 5 mixed views (positive and negative) perceptions. The positive perceptions fall under the following categories: reduction, tailoring, personalization, self-monitoring, simulation, praise, rewards, reminders, liking, social role, trustworthiness, expertise, surface credibility, real-world feel, verifiability, social learning, normative influence, and cooperation principles. Some of the negative perceptions include rehearsal, similarity, and recognition principles. Meanwhile, tunneling, suggestion, authority, third-party endorsement, competition, social comparison, and social facilitation principles with mixed views (positive and negative) perceptions.

Artificial intelligence applications for sustainable solid waste management practices in Australia: A systematic review