Explore potential barriers of applying circular economy in construction and demolition waste recycling

Liu, Jingkuang; Wu, Piao; Jiang, Yuhan; Wang, Xuetong

doi:10.1016/j.jclepro.2021.129400

Cited by 67 publications

(34 citation statements)

References 57 publications

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“…This comprises recycling measures (cycling), use phase extension (extending), a more intense use phase (intensifying), and the substitution of products by service and software solution (dematerialising)." Some authors have also proposed different conceptual frameworks and tools to build CBMs (Joyce and Paquin, 2016;Nußholz, 2017;Manninen et al, 2018;Bocken et al, 2019;Lüdeke-Freund et al, 2019;Donati et al, 2020;Geissdoerfer et al, 2020;Boldrini and Antheaume, 2021); others have already discussed the implementation of CBM, barriers, and limitations (Núñez-Cacho et al, 2018;Dijkstra et al, 2020;Guldmann and Huulgaard, 2020;Liu et al, 2021). No contribution was found, however, on studies quantifying monetary and material flows and also environmental benefits of an empirical application of CBM of recycling EoL fishing nets, including also the stakeholders' knowledge of the whole value chain.…”

Section: Figurementioning

confidence: 99%

Nuts and bolts of tropical tuna purse seine nets recycling: A circular business model

Andrés¹,

Zudaire²,

Larreta³

et al. 2022

Front. Sustain.

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Tropical tuna purse seiners are one of the most important contributors to end-of-life (EoL) fishing gears in the world, and these fishing nets can become a promising secondary raw material. Thus, tuna companies are looking for possibilities to valorize them by applying circular economy (CE). This contribution aims at assessing the viability of creating a circular business model out of recycled tropical tuna purse seine EoL nets. The yearly contribution of the Spanish tuna freezer purse seine companies to EoL fishing nets was estimated at 900 tons. Three pilot projects were implemented (involving 80 tons of EoL tuna nets) to learn about the monetary and material flows, supply chain, stakeholders' perception, and the environmental impacts of upcycling polyamide nets into four marketable products (i.e., conditioned fishing nets, backpacks, fishers' dungarees, and sunglasses). The results indicate that recycled regrinds/flakes and pellets were 37 and 50%, respectively, more expensive than virgin counterparts, but the yarn may achieve competitive production costs in the textile industry, with an additional environmental benefit close to 69% per kg of virgin–origin yarn. The challenges faced when recycling EoL polyamide fishing nets were discussed. Innovation and logistics appear to play a fundamental role in making the business sustainable. Besides, the circular business model methodology to assess the value proposition was also discussed in its empirical application.

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Section: Figurementioning

confidence: 99%

Nuts and bolts of tropical tuna purse seine nets recycling: A circular business model

Andrés¹,

Zudaire²,

Larreta³

et al. 2022

Front. Sustain.

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“…Se observa como la resistencia a flexión sigue siendo inferior en las muestras de mortero elaboradas con árido reciclado cerámico y cómo los morteros con ratio cemento/árido 1:3 obtuvieron mayores resistencias. En cualquier caso, se puede afirmar que los ciclos de envejecimiento acelerado han tenido una fuerte repercusión negativa en las prestaciones mecánicas finales de los morteros, de acuerdo con los resultados obtenidos por otros investigadores (Wang, et al, 2021).…”

Section: B Ensayos De Caracterización Físicaunclassified

“…La industria de la construcción produce a nivel mundial más de 10 mil millones de toneladas de Residuos de Construcción y Demolición (RCD) anualmente (Liu, et al, 2021). En el caso concreto de la Unión Europea (UE), los RCD suponen cerca del 35% del volumen total de residuos generados según fuentes del EUROSTAT, superando al resto de actividades industriales desarrolladas en la UE (Cristiano, et al, 2021).…”

Section: Introductionunclassified

Estudio Experimental sobre las Propiedades de los Morteros de Cemento y Chamota = Experimental Study on the Properties of Cement and Chamotte Mortars

Ferrández-Vega

Zaragoza-Benzal²,

Morón-Barrios³

et al. 2022

ADE

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El creciente agotamiento de los recursos naturales y el aumento de la actividad industrial está llevando al sector de la construcción hacia la búsqueda de nuevos materiales más respetuosos con el medio ambiente. En este trabajo se ha realizado una campaña experimental para conocer las propiedades físicas y mecánicas de los morteros de cemento elaborados con chamota, con la intención de estudiar su viabilidad técnica en comparación con los morteros elaborados con árido natural. Los resultados muestran como el empleo de los residuos cerámicos triturados como sustitución del árido natural para la fabricación de morteros es viable. No obstante, las resistencias mecánicas finales de los morteros se ven reducidas al emplear áridos reciclados, así como, se presentan unas peores propiedades físicas que podrían limitar el empleo de estos morteros en obra.AbstractThe growing depletion of natural resources and the increase in industrial activity is leading the construction sector to search for new materials that are more respectful of the environment. In this work, an experimental program has been carried out to know the physical and mechanical properties of cement mortars made with chamotte, with the intention of studying its technical feasibility in comparison with mortars made with natural aggregate. The results show how the use of crushed ceramic waste as a substitute for natural aggregate for the manufacture of mortars is viable. However, the final mechanical resistance of the mortars is reduced when using recycled aggregates from chamotte, as well as worse physical properties that could limit the use of these mortars on site.

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“…The amount of C&DW generated by the industry is also increasing at a rapid rate. Globally, more than 10 billion tons of C&DW are produced every year [7,8]. The construction industry is seen as a major generator of waste and pollution, as waste from construction activities significantly pollutes the environment [8,9].…”

Section: Introductionmentioning

confidence: 99%

Identifying the Barriers to Sustainable Management of Construction and Demolition Waste in Developed and Developing Countries

Alotaibi

Bowan²,

daiem

et al. 2022

Sustainability

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The construction industry is a vital part of every nation’s economy. Construction activities influence the social, environmental, and economic aspects of sustainability. There are so many barriers to sustainable construction and demolition waste management (C&DWM). This study aims to identify barriers for effective sustainable C&DWM in developed and developing countries. To achieve the objective, 11 barriers have been selected and identified based on an excessive and comprehensive literature review, and then reviewed by experts. These reviewed barriers were further examined by various experts within different organizations using a questionnaire survey. Ranking of the barriers was carried out using the Relative Importance Index (RI), and the results were statistically analyzed using Statistical Package for Social Sciences (SPSS). Practical solutions were proposed to overcome the identified barriers. The overall ranking of barriers by RI indicates that insufficient attention paid to C&DWM, lack of law enforcement, lack of regulation, and financial constraints represent the four major barriers to sustainable C&DWM in these countries. The findings of this study and the proposed solutions are enablers for decision-makers to develop effective strategies to tackle construction and demolition wastes in sustainable manners.

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Explore potential barriers of applying circular economy in construction and demolition waste recycling

Cited by 67 publications

References 57 publications

Nuts and bolts of tropical tuna purse seine nets recycling: A circular business model

Nuts and bolts of tropical tuna purse seine nets recycling: A circular business model

Estudio Experimental sobre las Propiedades de los Morteros de Cemento y Chamota = Experimental Study on the Properties of Cement and Chamotte Mortars

Identifying the Barriers to Sustainable Management of Construction and Demolition Waste in Developed and Developing Countries

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