Analysis of sustainable concrete obtained from the by-products of an industrial process and recycled aggregates from construction and demolition waste

Bergonzoni, M.; Melloni, Riccardo; Botti, Lucia

doi:10.1016/j.procs.2022.12.200

Cited by 15 publications

(7 citation statements)

References 3 publications

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“…The construction and refurbishment of buildings account for 11% of total greenhouse gas emissions in urban areas, with the majority of these emissions being from the manufacturing of cement, steel, aluminium and plastic. Therefore, the push to upgrade buildings towards energy efficiency and renewable energy usage must be accompanied by efforts to reduce the emissions generated during the production of construction materials, known as embodied emissions, as well as those that result from how CDW are disposed of ( Bergonzoni et al, 2023 ; Purchase et al, 2022 ).…”

Section: Resultsmentioning

confidence: 99%

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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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Section: Resultsmentioning

confidence: 99%

“…glass, polyethylene terephthalate (PET), ceramics, clay bricks, tires, concrete waste, agricultural waste, silica flume, fly ash, etc.) can be used in concrete production to reduce the disposal of large volumes of CDW through aggregates replacement ( Bergonzoni et al, 2023 ; Purchase et al, 2022 ).…”

Section: Resultsmentioning

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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“…Numerous studies have explored the feasibility and effectiveness of new recycled materials derived from CDW, including cement [84], concrete [85], mortars [86], plasters [87], gypsums [88], plastics [89,90], insulation materials [91], bricks [92,93], soil reinforcement [94], and fire-resistant materials [95].…”

Section: -Materials Recyclingmentioning

confidence: 99%

Circular Material Usage Strategies and Principles in Buildings: A Review

Santos,

Cervantes,

Zaragoza-Benzal

et al. 2024

Buildings

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Building construction accounts for a significant proportion of global greenhouse gas emissions, raw material extraction, and waste production. Applying circular economy (CE) principles in the building construction industry would considerably reduce these values. However, uptake by the industry is relatively slow, which is largely attributed to sectoral barriers, including limitations in knowledge and experience. This review paper aims to assess and contribute to diminishing these obstacles by offering a comprehensive review of circular material usage principles and strategies within the construction sector. Opportunities and facilitators of change are also presented, including innovations and emerging technologies in recycling, digitization, robotic systems, novel materials, and processing. Finally, four case studies demonstrate the application of circular theory via a novel block system, recycled aggregate, modular kitchen reuse, and an energy efficiency retrofit. The conclusions show that future efforts should prioritize the development of strong regulatory frameworks, awareness initiatives, and international cooperation. In this regard, the integration of technological advancements, such as AI, robotics, and blockchain, is essential for optimizing waste management efficiency. Furthermore, education on circular practices plays a critical role. Through global collaboration, standardizing circular construction approaches can promote a more sustainable and resilient building construction industry.

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“…A search in Scopus for the words recycled aggregate, leaching and industrial gives only 17 results and in none were the samples prepared under industrial conditions, as in this work. Some works use recycled elements for road construction, but the aggregates are not encapsulated in concrete elements [ 46 , 47 ], while others study the leaching in concrete samples, but not ones that were vibro-pressed and manufactured under laboratory conditions [ 48 ]. However, the surface is smaller as compared to the recycled aggregate without encapsulating it, which may cause environmental problems due to leaching when the recycled materials are used in a lower-value application such as sub-base materials for road construction [ 18 , 49 ].…”

Section: Introductionmentioning

confidence: 99%

Influence of the Properties of Different Types of Recycled Aggregate on the Service Properties and Leaching of Paving Blocks Manufactured at Industrial Scale

Hernández,

Sánchez,

Navarro

et al. 2024

Materials

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The literature shows that a circular economy can benefit some sectors such as the construction industry. This sector demands huge amounts of raw materials and produces waste when buildings and structures are demolished. This paper explores the possibility of manufacturing at industrial scale paving blocks using different types of construction and demolition wastes as aggregates, without modifying the commonly used industrial conditions. A total of four different recycled aggregates were used in this research. Both natural and recycled aggregates have been characterized. The dosages were optimized (three different formulations). Prefabricated tests have been carried out on the products manufactured in industrial plants and the evolution of mechanical properties over time has been analysed. The results obtained were analysed statistically by applying the principal component analysis (PCA) method. To ensure the security of the elements manufactured, the ionic leaching of the materials used as recycled aggregate and of the elements produced has been tested. The main implications of this research on the construction industry show that the majority of recycled aggregates used could replace 25% of the natural aggregate in manufactured precast concrete, that the properties of the aggregates should be taken into account in the different standards and that all paving blocks manufactured in this study can be considered environmentally safe (no risk of leaching) according to the Netherland Soil Quality Decree. Therefore, it is evident that it is possible to manufacture on an industrial scale paving blocks with mixed recycled aggregates, concrete and ceramic in nature, both with the fine and coarse fractions that meet the requirements of its reference standard UNE-EN 1338 and the Netherland Soil Quality Decree that evaluates environmental risks due to leaching.

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Analysis of sustainable concrete obtained from the by-products of an industrial process and recycled aggregates from construction and demolition waste

Cited by 15 publications

References 3 publications

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

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

Circular Material Usage Strategies and Principles in Buildings: A Review

Influence of the Properties of Different Types of Recycled Aggregate on the Service Properties and Leaching of Paving Blocks Manufactured at Industrial Scale

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