Reusing ceramic tile polishing waste in paving block manufacturing

Penteado, Carmenlucia Santos Giordano; Carvalho, E.; Lintz, Rosa Cristina Cecche

doi:10.1016/j.jclepro.2015.06.142

Cited by 86 publications

(25 citation statements)

References 30 publications

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“…Compressive strength and water absorption are inversely related; a highwater absorption percentage indicates a high porosity in the hardened concrete material, reducing, consequently the mechanical strength. A similar behavior has been found in a study of Penteado et al (2016), in which a polishing ceramic waste was used in concrete paving blocks; according to Gencel et al (2015), this behavior is explained by the fact that the aggregate particles are enveloped by the cement paste, and then, the pores of the EAFA do not contribute to the water absorption in the concrete block.…”

Section: Resultssupporting

confidence: 76%

Use of electric arc furnace slag for producing concrete paving blocks

et al. 2019

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In this study the electric arc furnace slag was used as coarse natural aggregate substitute in concrete paving blocks production. The concrete mixture was defined by using weight proportions in the ratio of 1:2:3:0.51 (cement:sand:coarse aggregate:water) in order to obtain a compressive strength of 35 MPa. Four groups of concrete were prepared: a reference recipe and three others with the slag replacing the natural aggregate in the proportions of 25%, 50% and 75%. The compressive strength was not influenced by the slag content; however, it was influenced by the curing age, as the sample with 75% of slag addition had its compressive strength increased by 13.5% from 7 to 56 days. Water absorption presented a slightly reduction with slag addition. The results of compressive strength and water absorption met the Brazilian technical requirements, making the paving blocks suitable for use in light vehicle traffic. The results obtained in this study highlight the influence of the production process in the final quality of the steel slag, and the need of stablishing technical and environmental requirements to guide and promote the safe use of electric arc furnace slag in concrete.

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Section: Resultssupporting

confidence: 76%

Use of electric arc furnace slag for producing concrete paving blocks

et al. 2019

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“…Such inert materials can successfully be used to produce new recycled concrete, and mixed with by-products from the construction sector. These by-products also include recycled concrete [55], ceramic tiles [56], and bricks [57] as well as other industries, such as geo-polymer slurry [58] or fly-ash and blast [59]. The addition of by-products into concrete is a practice that delays by-products from being landfilled; however, the substitution is already limited by the actual amount of available by-products.…”

Section: Strategy 2: Integration Of Scrap Waste and By-products Intmentioning

confidence: 99%

Strategies for Applying the Circular Economy to Prefabricated Buildings

et al. 2018

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In this paper, a circular-economy framework is applied to the prefabricated building sector to explore the environmental advantages of prefabrication in terms of reduction, reusability, adaptability, and recyclability of its components. A qualitative approach is used to revisit the design, construction, and demolition stages of prefabricated buildings; in so doing, the circular-economy framework is applied to foster circular prefabricated modi operandi. Prefabrication of buildings can be divided into four entities: elements and components, panels (or non-volumetric elements), volumetric, and entire modules. Through an analysis of published research on how the circular economy can be applied to different industry sectors and production processes, seven strategies emerged, each of which revealed the potential of improving the circular economy of buildings. The first strategy is reduction of waste through a lean production chain. By reusing the waste, the second strategy investigates the use of by-products in the production of new components. The third strategy focuses on the reuse of replacement parts and components. The fourth strategy is based on design toward adaptability, respectively focusing on reusability of components and adapting components for a second use with a different purpose. Similarly, the fifth strategy considers the implications of designing for disassembly with Building Information Modeling so as to improve the end-of-life deconstruction phase. The sixth strategy focuses on design with attention to recyclability of used material. Finally, the seventh strategy considers the use of tracking technologies with embedded information on components’ geometric and mechanic characteristics as well as their location and life cycle to enable second use after deconstruction. It is demonstrated that prefabricated buildings are key to material savings, waste reduction, reuse of components, and various other forms of optimization for the construction sector. By adopting the identified strategies in prefabricated buildings, a circular economy could be implemented within the construction industry. Finally, seven guidelines were distilled from the review and linked to the identified strategies. Owing to their degree of adaptability and capacity of being disassembled, prefabricated buildings would allow waste reduction and facilitate a second life of components.

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“…Os estudos propõem que o desperdício de um sistema pode ser usado como insumo em outro sistema, em um conceito de economia circular [38]. No caso da indústria de pisos, propõe-se, por exemplo, a reutilização de seus resíduos de produção na fabricação de blocos de pavimentação [39], argamassa [40], asfalto [41], concreto [42], etc. O aproveitamento de resíduos de esgoto [43] ou resíduos de outros ramos da indústria cerâmica, como a de sanitários [44] ou do próprio polimento de porcelanatos [45] na fabricação de revestimentos, já foram também propostos.…”

Section: Potencial De Melhoria Ambientalunclassified

Avaliação do Ciclo de Vida (ACV): Uma ferramenta para a redução do impacto ambiental dos revestimentos cerâmicos

Contartesi¹,

Melchíades²,

Boschi³

2019

Cerâm. ind.

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Por razões diversas, legislação, ética, imagem da empresa, marketing, etc. os produtores de revestimentos cerâmicos têm se interessado cada vez mais por estudos de Avaliação do Ciclo de Vida (ACV). Esses estudos, baseados em uma relação de entradas e saídas ao longo de toda a vida do produto, permitem identificar as etapas mais críticas na geração de impactos ambientais A identificação dessas etapas é fundamental para aumentar a eficácia das medidas que visam tornar os revestimentos cerâmicos cada vez mais amigáveis para o meio ambiente. Nesse cenário o presente trabalho buscou, através do levantamento e análise crítica dos trabalhos mais relevantes dedicados a essa área do conhecimento, identificar as ações mais efetivas para reduzir os impactos ambientais provocados por esses produtos, os revestimentos cerâmicos. De um modo geral, os trabalhos concluem que o maior impacto ocorre durante a fabricação, mais especificamente as etapas que envolvem energia térmica, secagem (atomização) e queima. Outras etapas destacadas são a produção de fritas e o transporte. Nesse sentido, as sugestões para a redução do impacto ambiental sugeridas pelos artigos internacionais podem ser agrupadas em três frentes principais: energia, resíduos e matérias-primas. Muito embora alguns fabricantes brasileiros já tenham implementados medidas alinhadas com as recomendações dos estudos internacionais, as peculiaridades da indústria nacional de revestimentos cerâmicos, como a predominância da via seca e a fusibilidade de algumas argilas, por exemplo, indicam a necessidade de se avaliar o ciclo de vida (ACV) para a nossa realidade. Nesse sentido, infelizmente, são muito poucas as avaliações dos ciclos de vida que levam em consideração as mencionadas peculiaridades da nossa indústria.

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Reusing ceramic tile polishing waste in paving block manufacturing

Cited by 86 publications

References 30 publications

Use of electric arc furnace slag for producing concrete paving blocks

Use of electric arc furnace slag for producing concrete paving blocks

Strategies for Applying the Circular Economy to Prefabricated Buildings

Avaliação do Ciclo de Vida (ACV): Uma ferramenta para a redução do impacto ambiental dos revestimentos cerâmicos

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