Circular economy potential of sustainable aggregates for the Malaysian construction industry

Sinoh, Saznizam Sazmee; Othman, Faridah; Onn, Chiu Chuen

doi:10.1016/j.scs.2022.104332

Cited by 10 publications

(5 citation statements)

References 70 publications

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“…Recent policy initiatives promote the adoption of cleaner, circular practices in the building and construction materials sector in developed regions [14], as in the European Commission's Circular Economy Action Plan [15]. The 1972 United Nations (UN) Conference on the Human Environment was the first intergovernmental effort to set broad environmental goals [16]; today, to achieve environmental sustainability, governments and industries are adopting circular economy practices, which comprise a systematic approach focusing on restorative and regenerative aspects of the economics of the manufactured product [17].…”

Section: The Importance Of Alternative Materials For Building Constru...mentioning

confidence: 99%

A Comprehensive Review of Stone Dust in Concrete: Mechanical Behavior, Durability, and Environmental Performance

et al. 2023

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The escalating demand for natural resources within the construction industry is progressing upward. At the same time, however, there is a great concern regarding the depletion of these resources. This review paper emphasizes the significance of utilizing alternative aggregate materials in concrete. Particularly, it aims to explore replacing natural sand with stone dust. On the one hand, the depletion of primary sources of natural sand worldwide, combined with environmental and ecological concerns, drives the adoption of alternative aggregate materials for sustainable concrete construction. On the other hand, stone dust, a waste from the quarrying industry, offers a cost-effective and practical solution for producing concrete. This article presents a comprehensive literature review of the main trends in utilizing stone dust in recycled aggregates in the past decade and its influence on concrete properties. It addresses critical research questions regarding the physical and chemical properties of stone dust aggregates compared to natural sand; the impact of stone dust on the workability, mechanical, physical, and durability properties of recycled concrete; and the potential reduction of environmental impacts in terms of energy consumption and emissions through the replacement of natural sand with stone dust. Ultimately, this paper proposes future investigative work based on identified research gaps.

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Section: The Importance Of Alternative Materials For Building Constru...mentioning

confidence: 99%

A Comprehensive Review of Stone Dust in Concrete: Mechanical Behavior, Durability, and Environmental Performance

et al. 2023

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“…Tensile strength is the ability of concrete to resist pulling or tension forces, which is vital for structures exposed to twisting or bending forces. Thermal conductivity measures the capacity of concrete to conduct heat and is an essential property for buildings located in hot or cold climates, as it impacts the transfer of heat between the inside and outside of the structure [87][88] [89].…”

Section: Analysis Of Concrete Performancementioning

confidence: 99%

“…This process can result in significant greenhouse gas emissions and other environmental impacts, such as land degradation and air pollution. In contrast, using waste materials as aggregates can reduce these impacts, as it avoids the need to extract and process new materials [98].…”

Section: Evaluation Of the Environmental Impact Of Using Waste Materi...mentioning

confidence: 99%

Potential of Waste Material as Coarse Aggregates for Lightweight Concrete Production: A Sustainable Approach

Mohammed Umar,

K. Muthusamy

2023

Constr.

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In recent times, there has been growing interest in utilizing waste materials as coarse lightweight aggregates in the production of lightweight aggregate concrete. This approach has been gaining momentum as it has the potential to address the environmental concerns that come with conventional construction practices. The objective of this review paper is to evaluate the viability and potential of waste materials as coarse lightweight aggregates for producing lightweight aggregate concrete. This paper reviews the current research on various types of waste materials, including waste plastic, recycled concrete aggregate, slag, fly ash, and expanded polystyrene, as potential candidates for coarse lightweight aggregates. The paper highlights the properties and characteristics of these waste materials and their suitability for use as coarse lightweight aggregates. Additionally, the evaluation explores the mechanical characteristics of lightweight aggregate concrete that is generated using waste materials as coarse lightweight aggregates. Specifically, it compares the compressive strength, splitting tensile strength, flexural strength, and modulus of elasticity of lightweight aggregate concrete that includes waste materials with those of typical concrete. Furthermore, the paper discusses the sustainability benefits of using waste materials as coarse lightweight aggregates. By using waste materials in construction, not only are resources conserved, but waste is also diverted from landfills, reducing the negative impact on the environment. In conclusion, this review paper demonstrates that the use of waste material as coarse lightweight aggregate for lightweight aggregate concrete production is a viable and sustainable approach. The application of waste materials as coarse lightweight aggregates in lightweight aggregate concrete demonstrates mechanical characteristics that are similar to traditional concrete. Moreover, utilizing waste materials in this manner provides environmental advantages. This study offers valuable insights into the implementation of waste materials in construction, and it emphasizes the possibility of further exploration and advancement in this domain. For this review, a total of 15 articles were analyzed, with publication dates ranging from 2005 to 2021. The study contributes to several Sustainable Development Goals (SDG 9/11/12/13) set by the United Nations such as providing insights into the role of industry, innovation, infrastructure, sustainable cities, responsible consumption, production practices, and climate action.

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“…Simultaneously, it accounts for 23% of air pollution (greenhouse gasses and particulates matter emissions) amounting to 50% of climate change, 40% drinking water pollution and 50% of landfilling ( Kabirifar et al, 2020 ). According to Sinoh et al (2023) , concrete production amounts of more than 30 billion tonnes on a yearly basis, amounting for 8% of global carbon dioxide emissions, whereas its aggressive consumption leads to the unsustainable exploitation of natural aggregates. Due to the large volume and size of waste from construction, CDW take up a lot of space in landfills, leading to lack of space for other waste (thus the creation of new landfilling sites), increase in air, water and soil emissions (carbon dioxide, leachate leading to increase in soil and water toxicity, etc.).…”

Section: Introductionmentioning

confidence: 99%

Construction and demolition waste framework of circular economy: A mini review

Papamichael,

Voukkali,

Loizia

et al. 2023

Waste Manag Res

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As the demand for materials continues to increase and building lifespans shorten, the construction industry faces mounting pressure to reduce its material and environmental impacts. Mismanagement of construction and demolition waste (CDW) can have severe environmental consequences. To address this, material recovery and circular economy approaches offer significant potential for reducing construction waste through the sustainable use of resources. Existing circular economy and material recovery models that prioritize recycling and reuse efforts demonstrate a sustained commitment to supporting circular practices in the construction and demolition sector. The goal is to minimize waste production, which poses environmental challenges such as raw material shortages and sustainability concerns. Using Preferred Reporting Items for Systematic Reviews and Meta-Analyses statement for recruiting relevant literature, this mini review aims to identify the obstacles to implementing circular economy practices in the construction industry, while exploring opportunities for material recovery and circularity. The ultimate aim is to facilitate a fair and smooth transition towards sustainable development, while addressing environmental, social and economic barriers. A more sustainable and circular approach to building construction and management can be attained by considering all the aspects of the CDW cycle, resulting in significant benefits for the environment and society as a whole.

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Circular economy potential of sustainable aggregates for the Malaysian construction industry

Cited by 10 publications

References 70 publications

A Comprehensive Review of Stone Dust in Concrete: Mechanical Behavior, Durability, and Environmental Performance

A Comprehensive Review of Stone Dust in Concrete: Mechanical Behavior, Durability, and Environmental Performance

Potential of Waste Material as Coarse Aggregates for Lightweight Concrete Production: A Sustainable Approach

Construction and demolition waste framework of circular economy: A mini review

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