waste minimisation
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2022 ◽  
Vol 14 (2) ◽  
pp. 656
Author(s):  
Musa Mohammed ◽  
Nasir Shafiq ◽  
Al-Baraa Abdulrahman Al-Mekhlafi ◽  
Ehab Farouk Rashed ◽  
Mohamed Hassan Khalil ◽  
...  

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.


2021 ◽  
Vol 17 (2) ◽  
pp. 1-17
Author(s):  
Shitaw Tafesse ◽  
◽  
Tamene Adugna ◽  

Construction sites generate a large amount of material wastes and have become a common problem with associated risks in Ethiopia. However, the sources of such wastes are not well recognised. Therefore, the purpose of this research was to analyse the risk factors that contribute to material wastes in building construction projects. To achieve this goal, the factors that cause construction wastes were identified from literature and construction experts via focus group discussions and personal interviews. Following this, the factors were subjected to a questionnaire survey to identify the most critical factors of construction wastes. The questionnaire was distributed purposively to 85 construction experts representing contractors, consultants, and clients and 70 questionnaires were duly received for analysis. The data were analysed with a mean score and ranked to identify the most critical factors generating material wastes at construction sites. According to the results of the study frequent changes made to the design, poor strategies for waste minimisation, improper storage of material, poor site management, poor planning and supervision, and errors of contract document were the most critical factors causing construction wastes.


Materials ◽  
2021 ◽  
Vol 14 (23) ◽  
pp. 7296
Author(s):  
Joanna Sagan ◽  
Anna Sobotka

A circular economy requires closed circuits of consumed resources. Construction generates approximately 50% of solid waste globally, which is difficult to manage. The aim of this article was to identify the factors that determine the development of circular construction in the context of waste minimisation in the life cycle of building structures. The identification of cause-and-effect relationships by means of the DEMATEL method allows the problems of construction waste management to be taken into account in the context of the development of sustainable construction and fulfilling the principles of the circular economy.


Author(s):  
Ai Ha Thi Nguyen ◽  
Akshit Singh ◽  
Sushma Kumari ◽  
Sonal Choudhary

2021 ◽  
Vol 23 (08) ◽  
pp. 625-634
Author(s):  
Bhaskar GV ◽  
◽  
Shashank R ◽  
Srinivasan H ◽  
Santhosh M ◽  
...  

The hierarchy of waste refers to the “3 Rs” i.e. Reduce, Reuse and Recycle, which implements the strategies of waste management according to their specifications in terms of waste minimisation. The power of solar was exposed to people when Jawaharlal Nehru National Solar Mission (JNNSM) was introduced in the country in the year 2010.From then on people started to install and set up the solar as they came to know that the end life of it is around to be 2035. But none of them thought about future, i.e. what would happen to the solar panels when they are not able to generate power. Now the main issue is how will India be able to discard nearly 90 GW worth solar panel in the next 20 years? Where an average solar panel sized 250 watts, 90GW will amount to almost 7.7 million tonnes of E- waste at the end of a lifetime of a solar plant [1]. This paper mainly focuses on how these E-wastes produced can be reused and recycled.


Author(s):  
Winnie Wing Mui So ◽  
Irene Nga Yee Cheng ◽  
Lewis Ting On Cheung ◽  
Yu Chen ◽  
Stephen Cheuk Fai Chow ◽  
...  

Abstract This study aimed to explore the relationships between situational and psychological factors and Hong Kong citizens’ plastic waste management (PWM) intentions based on an extended theory of planned behaviour model with situational factors. A total of 996 Hong Kong permanent residents were surveyed, and data were analysed using structural equation modelling. The results revealed that situational factors had a direct and positive effect on PWM intention, but also affected PWM intention indirectly through their significant effects on attitude and perceived behavioural control regarding PWM. The implications for environmental education and policy are discussed.


2021 ◽  
Vol 17 (2) ◽  
Author(s):  
Hannah Blumhardt

For the first time since the enactment of the Waste Minimisation Act 2008, New Zealand is applying regulated (or mandatory) product stewardship to several priority products. By making those who manufacture, sell and use products responsible for minimising the waste those products cause, well-designed product stewardship schemes can act as a critical tool in the transition to a circular economy. However, the New Zealand government has put its faith in industry to lead scheme design. Such an approach threatens to vitiate robust, ambitious schemes and foreground industry interests over those of wider society and the natural environment. This article juxtaposes the radical potential of product stewardship against the probable outcome of industry-led schemes, and recommends reforms that the minister for the environment should pursue in order to shift the dial towards more inclusive design of product stewardship schemes.


Author(s):  
Nawadon Petchwattana ◽  
Phisut Naknaen ◽  
Kamonchai Cha-Aim ◽  
Jakkid Sanetuntikul‬

2020 ◽  
Vol 118 ◽  
pp. 323-330
Author(s):  
Saidat Damola Olanrewaju ◽  
Olabode Emmanuel Ogunmakinde

Crystals ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 696 ◽  
Author(s):  
Rayed Alyousef ◽  
Hossein Mohammadhosseini ◽  
Fahed Alrshoudi ◽  
Mahmood Md. Tahir ◽  
Hisham Alabduljabbar ◽  
...  

The utilisation of waste plastic and polymeric-based materials remains a significant option for clean production, waste minimisation, preserving the depletion of natural resources and decreasing the emission of greenhouse gases, thereby contributing to a green environment. This study aims to investigate the resistance of concrete composites reinforced with waste metalised plastic (WMP) fibres to sulphate and acid attacks. The main test variables include visual inspection, mass loss, and residual strength, as well as the microstructural analysis of specimens exposed to aggressive environments. Two sets of concrete mixes with 100% ordinary Portland cement (OPC) and those with 20% palm oil fuel ash (POFA) were made and reinforced with WMP fibres at volume fractions of 0–1.25%. The results revealed that the addition of WMP fibres decreased the workability and water-cured compressive strength of concrete mixes. The outcomes of the study suggest that the rate of sulphate and acid attacks, in terms of mass losses, was controlled significantly by adding WMP fibres and POFA. The mutual effect of WMP fibre and POFA was detected in the improvement in the concrete’s resistance to sulphate and acid attacks by the reduction in crack formation, spalling, and strength losses. Microstructural analysis conducted on the test specimens elucidates the potential use of POFA in improving the performance of concrete in aggressive environments.


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