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

Contreras, Manuel Acosta; Teixeira, Silvio Rainho; Santos, G. T. A.; Gázquez, M.J.; Romero, Maximina; Bolı́var, J.P.

doi:10.1016/j.conbuildmat.2018.04.131

Cited by 55 publications

(18 citation statements)

References 33 publications

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“…The difference between the percentages obtained in the PI and the classification is closely related to the granulometric distribution that was shown previously, so a good amount of the clay fraction is present (in case of the presented sample) and it provides greater strength of the products [23]. It should also be considered that high plasticity can hinder the processing/conformation of the clay, so to reduce plasticity, it may be necessary to incorporate some clay with low plasticity or deplasticizing materials, as was done in some previous works [12,13,[24][25][26]. Figure 2 shows the Winkler diagram for the clay sample, in which appropriate regions for the processing of clay ceramics products are identified according to the granulometry of the material used [27].…”

Section: Resultssupporting

confidence: 63%

Characterization of clay deposit in the central region of Piauí for use in the ceramic industry

2020

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The clay ceramics industry comprises materials used in construction (bricks, tiles, and expanded clay, among others), is of great importance for Brazilian economic development, and the industry is seeking new sources of raw material, mainly clay. The present work aims to characterize a clay deposit located in the central region of the state of Piauí, to make feasible its use as ceramic raw material, seeking to boost the clay ceramics industry. The chemical composition, the crystalline phases, and the plasticity of the clay were analyzed. Specimens were prepared by uniaxial pressing, dried in an oven at 110 °C, and then heated to 900 °C, 1000 °C, and 1100 °C. Bending strength, apparent porosity, linear shrinkage, water absorption, and mineralogical, macrostructural, and microstructural analyses were determined. The results showed an improvement in the indices with the increase in the firing temperature and that the samples showed a reddish coloration due to the presence of iron, as well as quartz and kaolinite. Thus, the clay deposit has the potential to become raw material for the clay ceramics industry in the state of Piauí.

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Section: Resultssupporting

confidence: 63%

Characterization of clay deposit in the central region of Piauí for use in the ceramic industry

2020

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“…Most of this byproduct (85%) is stored in large stockpiles without any treatment. About 15% of this waste is re-used in building materials, soil amendment for soil remediation, agricultural fertilizers and Portland cement manufacture (e.g., [3][4][5][6][7]).…”

Section: Introductionmentioning

confidence: 99%

Phosphogypsum waste as additives to lime stabilization of bentonite

Oumnih

Bekkouch

Gharibi

et al. 2019

Sustain Environ Res

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Waste recycling with increasing the lifecycle of resource is a novel approach for enhancing circular economy. Within this context, this study aims to give a second life cycle to phosphogypsum (PG) waste, which is a byproduct from phosphoric acid manufacture, as useful resources. This study evaluates the sustainability of this harmful waste, which is accumulated in large stockpiles and becomes hazardous during storage, and to stabilize bentonite-based concrete intended for road construction. The effect of raw bentonite (Ca-Na montmorillonite), PG, and lime on the properties of cementitious materials has been investigated through various tests. The properties examined include chemistry (X-ray Fluorescence Spectrometry), mineralogy (X-ray Powder Diffraction and Fourier-Transform Infrared Spectroscopy), calorimetry (Differential Thermal Analysis/Thermogravimetry) and microstructure (Scanning Electron Microscopy) of the mortar based on different mixtures of bentonite, PG and lime. The result show that lime and PG addition involves in the formation of new nanocrystalline phases and the disappearance of certain minerals as portlandite. Calcium silicate hydrate gel appeared in the mixture with 8% of lime, whereas strätlingite was neoformed in the mixture with 8% of lime and 8% of PG. These nanocrystalline phases are responsible for enhancing mechanical strength through the pozzoloanic reaction.

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“…Contreras et al [51] avaliaram o uso de fosfogesso (gesso gerado durante a fabricação de ácido fosfó-rico nas indústrias de fertilizantes) obtido em pilhas de descarte e moído como um aditivo na fabricação de cerâmica. Os corpos de prova cerâmicos foram confeccionados incorporando diferentes concentrações de fosfogesso (5, 7,5 e 10% em peso) à argila natural e queimado a 950 °C, 1050 °C e 1150 °C, e foram avaliadas as propriedades físicas, químicas e tecnológicas.…”

Section: Efeitos De Resíduos De Gesso Em Cerâmica Vermelhaunclassified

Efeito de resíduos de gesso e de granito em produtos da indústria de cerâmica vermelha: revisão bibliográfica

2020

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RESUMO A indústria da cerâmica vermelha compreende materiais empregados na construção civil (tijolos, telhas, argila expandida, entre outros) e tem grande importância para o desenvolvimento econômico brasileiro, assim tem crescido a procura por seus produtos, causando um problema de escassez de reservas de matérias-primas de boa qualidade e em locais economicamente adequados. Outros materiais também utilizados na construção civil, como o granito (principal produto da indústria de rochas ornamentais) e gesso de revestimento tem apresentado crescimento em sua demanda, gerando, em seu processo de beneficiamento, grande quantidade de resíduos, provocando impacto negativo ao meio ambiente. A reciclagem de resíduos está cada vez mais em evidência em razão do grande volume gerado pelo setor. A indústria de cerâmica vermelha, por sua característica heterogênea, tem se destacado na incorporação de resíduos, tanto por apresentar vantagens, quanto pelo maior rigor das leis atuais. Assim, este trabalho tem por finalidade expor uma visão geral sobre os efeitos da utilização dos resíduos industriais, gesso e granito, em indústria de cerâmica vermelha, apresentando também resultados de trabalhos executados nesta área. Os resultados apontam quantidade escassa de pesquisas na área de reciclagem de resíduos de gesso e granito, e que a utilização dos mesmos em massa cerâmica está em conformidade com a legislação vigente e ainda contribui para a redução dos impactos negativos causados ao meio ambiente devido ao seu descarte em locais indevidos.

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

Cited by 55 publications

References 33 publications

Characterization of clay deposit in the central region of Piauí for use in the ceramic industry

Characterization of clay deposit in the central region of Piauí for use in the ceramic industry

Phosphogypsum waste as additives to lime stabilization of bentonite

Efeito de resíduos de gesso e de granito em produtos da indústria de cerâmica vermelha: revisão bibliográfica

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