Incorporation of gypsum waste in ceramic block production: Proposal for a minimal battery of tests to evaluate technical and environmental viability of this recycling process

Godinho-Castro, Alcione P.; Testolin, Renan C.; Janke, Leandro; Corrêa, Albertina X.R.; Radetski, Claudemir M.

doi:10.1016/j.wasman.2011.08.019

Cited by 44 publications

(17 citation statements)

References 14 publications

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“…In other words, there is a strong need to diversify the industrial applications of this waste. Some authors have focused on recycling gypsum for traditional ceramic building materials [18], such as synthetic polymer cement [19], ceramic block [20], and non-fired ceramic [21]. The increasing amount of PG being produced, and thus the need for increasingly large storage areas such as that in the city of Huelva, have led to a considerable need for the development of new economically and environmentally attractive methods to recycle this industrial waste.…”

Section: Introductionmentioning

confidence: 99%

Influence of the addition of phosphogypsum on some properties of ceramic tiles

Contreras

Teixeira

Santos

et al. 2018

Construction and Building Materials

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Section: Introductionmentioning

confidence: 99%

Influence of the addition of phosphogypsum on some properties of ceramic tiles

Contreras

Teixeira

Santos

et al. 2018

Construction and Building Materials

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“…erefore, the recycling of WG and the utilization of its recycled plaster are necessary to reduce the plaster of Paris consumption, reduce cost, save energy, and protect the environment. However, the recycling of WG is insufficient, and a great loss of resources considering the gypsum is only limited as an auxiliary material for producing cement [6], reinforcing soft soil [9][10][11][12], and ceramic products [13].…”

Section: Introductionmentioning

confidence: 99%

Study on Hydration and Mechanical Property of Portland Cement‐Blended Recycled Plaster Materials

Peng

et al. 2018

Advances in Materials Science and Engineering

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In this work, Portland cement- (OPC-) blended recycled plaster materials (R-CP) were prepared to find out their hydration and mechanical properties. It was found that the hydration of R-CP was accelerated by the rapid rehydrated ettringite (AFt), and the strength of R-CP was decreased by the reduced hemihydrate content and low strength of rehydrated AFt and CaCO3. On the contrary, consistent with the previous studies, the strength of OPC-blended plaster of Paris materials (POCP) was improved by the formation of AFt, Ca(OH)2, and CaCO3 that filled pores in the pastes. Therefore, a different strength development could be seen in POCP and R-CP. In principle, these findings will lay a solid ground work for the utilization of recycled plaster.

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“…Estas propriedades impedem o uso de concretos que contenham gesso como material para uso em fundação ou em aplicações associadas ao cimento, pois um excesso de sulfatos poderia gerar reações que provoquem expansão com redução na resistência do concreto e consequente deterioração do material [25]. Porém Godinho-Castro et al [26] complementa esta informação sugerindo que a incorporação de resíduos de gesso na produção de blocos cerâmicos em até 20%, seria viável sem causar impacto técnico adverso (ou seja, mudança na qualidade do produto) e impacto ambiental. Observa-se que o estudo de agregados reciclados contaminados com gesso vai depender de alguns fatores, principalmente relacionado a finalidade de utilização e o percentual de gesso presente no agregado, demonstrando que o tema ainda não é consenso, necessitando de estudos adicionais.…”

Section: Durabilidade Do Concreto Com Agregado Recicladounclassified

Influência do agregado reciclado na durabilidade do concreto: uma revisão da bibliografia

Krüger¹,

Pereira²,

Chinelatto

2017

Simpósio Paranaense De Patologia Das Construções

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Resumo: No Brasil, as edificações são concebidas para durar muitos anos, porém devido à falta de manutenção, aumento da demanda populacional ou mudanças nas características urbanas onde está inserida, sua vida útil muitas vezes é reduzida. Tendo em vista que os recursos naturais não são renováveis e que novas edificações demandam geração de agregados para sua produção, uma proposta que já vem sendo estudada é a utilização destes resíduos de construções e demolições transformados em agregados reciclados para construção. O presente artigo apresenta uma conceituação sobre a propriedade de durabilidade do concreto, correlacionando-a com as características dos agregados constituintes. De forma análoga, está apontado através de diversos estudos, como estas características influenciam diferenciadamente os agregados reciclados. Observa-se que conhecendo o comportamento apresentado pelos agregados reciclados, é possível fazer o monitoramento adequado do gerenciamento e beneficiamento deste material. Ao se controlar as características do RCD, consequentemente aumenta-se o controle das propriedades do concreto com ele confeccionado. Conclui-se então após esta revisão da literatura que a produção de concretos com boa durabilidade é um objetivo tangível.Palavras-chave: durabilidade, concreto, agregado reciclado, RCD.Abstract: In Brazil, buildings are designed to last for many years. However, due to lack of maintenance, increased population demand or changes in the urban characteristics where they are inserted, their service life is often reduced. Since natural resources are not renewable and new buildings require generation of aggregates for their production, a proposal that has already been studied is the use of these construction and demolition waste transformed into recycled aggregates for construction. This article presents a conceptualization on the concrete durability property, correlating it with the characteristics of its constituent aggregates. In an analogous way, it points out through several studies, how these characteristics influence the recycled aggregates in different ways. It is observed that knowing the behavior presented by the recycled aggregates, it is possible monitor in a proper way the management and processing of this material. When the CDW characteristics are controlled, consequently an increase in the control of the properties of the concrete made with it is obtained. The conclusion of this literature review is that the production of concrete with good durability is a tangible objective. 254 | P á g i n a KRUGER, P.; PEREIRA, E.; CHINELATTO, A. S. A., INFLUÊNCIA DO AGREGADO RECICLADO NA DURABILIDADE DO CONCRETO: UMA REVISÃO DA BIBLIOGRAFIA. 2º Simpósio Paranaense de Patologia das Construções (2º SPPC), artigo

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Incorporation of gypsum waste in ceramic block production: Proposal for a minimal battery of tests to evaluate technical and environmental viability of this recycling process

Cited by 44 publications

References 14 publications

Influence of the addition of phosphogypsum on some properties of ceramic tiles

Influence of the addition of phosphogypsum on some properties of ceramic tiles

Study on Hydration and Mechanical Property of Portland Cement‐Blended Recycled Plaster Materials

Influência do agregado reciclado na durabilidade do concreto: uma revisão da bibliografia

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