Avaliação experimental de blocos prensados de solo-cimento com adição de grits

Pinheiro, Márcia Lana; Alvarenga, Rita de Cássia Silva Sant’Anna; Ribeiro, Benício Costa; Júnior, Paulo Rogério Silva; Sarmet, Márcio Sampaio; Fassoni, Délio Porto

doi:10.1590/s1678-86212013000200004

Cited by 13 publications

(8 citation statements)

References 5 publications

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“…The strength tends to increase for higher grit levels in the formulations. Another work [69] on similar products confirmed these observations, and the optimal formulation, established according to the (maximum) compression strength and the (minimum) water absorption values, was the mix with 62.5 wt% grits. The replacement of Portland cement with grits in the production of soil-cement blocks was also studied in [35].…”

Section: Slaker Gritsmentioning

confidence: 56%

Wastes from pulp and paper mills - a review of generation and recycling alternatives

et al. 2018

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The production of pulp and paper is increasing worldwide, and wastes are therefore being generated in appreciable amounts. Various materials are generated in pulp and paper mills, such as ash, dregs, grits, lime mud and pulp mill sludge. Over the years, these wastes have typically been sent to landfills or incinerated. However, with increased environmental awareness new alternatives have been investigated, especially the valorization of these materials. In this review, the characteristics of the manufacturing process, generated wastes, main destinations and recycling alternatives are addressed. The state of the art indicates that dregs are useful in agriculture as soil amendments, while lime mud can be used in agriculture and in environmental technology, mainly in wastewater treatment. Grits are commonly employed in construction, and pulp mill sludge shows applications in agriculture, construction and energy processes. In conclusion, this review shows several successful cases of recycling wastes from pulp and paper mills.

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Section: Slaker Gritsmentioning

confidence: 56%

Wastes from pulp and paper mills - a review of generation and recycling alternatives

et al. 2018

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“…Dallacort et al (2002) verificaram que é possível substituir de 25 e 57% do teor de cimento por resíduos cerâmicos para a produção de blocos de solo-cimento com resistências adequadas. Pinheiro et al (2013) concluíram que é viável utilizar o resíduo grits (oriundo de indústrias de celulose e papel) para produzir blocos de solo-cimento adequados para construção. Por outro lado, do ponto de vista ambiental, o uso de resíduos pode ser comprometido caso a disponibilidade seja limitada, o que pode levar a um aumento da distância de transporte, resultando em maiores impactos ambientais, como apontam Göswein et al (2018).…”

Section: Proposição De Melhorias Ambientais Para O Sistema De Alvenaria De Blocos De Solo-cimentounclassified

Avaliação ambiental do sistema construtivo de alvenaria de blocos de solo-cimento considerando diferentes especificações de projeto

Caldas¹,

Filho²

2021

GT Projetos

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Este trabalho teve o objetivo de avaliar os potenciais impactos ambientais no ciclo de vida de diferentes especificações de projeto do sistema de alvenaria estrutural de blocos de solo-cimento. As alternativas avaliadas foram comparadas com a alvenaria estrutural de blocos cerâmicos e de concreto. Foi utilizada a metodologia de Avaliação do Ciclo de Vida (ACV). Foram comparados diferentes tipos de processo de produção de blocos de solo-cimento, considerando um processo manual e outro mecanizado. Foram também comparados dois tipos de cimento, CP-II-E-40 e CP-V-ARI e diferentes tipos de revestimento utilizados em uma parede de blocos de solo-cimento. A alternativa de alvenaria com blocos de solo-cimento com processo manual e com cimento CP-II-E-40 foi a mais vantajosa. As alternativas de alvenaria de blocos de solo-cimento apresentaram menores impactos ambientais que a alvenaria estrutural de blocos cerâmicos e de concreto para a maioria dos casos avaliados principalmente quando o revestimento de resina acrílica é considerado, com diferenças de até 77% para a categoria de Potencial de Aquecimento Global. A pesquisa contribui por mostrar, de forma quantitativa, o desempenho ambiental de diferentes alternativas do sistema de alvenaria de blocos de solo-cimento, para o contexto brasileiro. Os resultados apresentados, especialmente as diretrizes ambientais de projeto, podem auxiliar projetistas e construtores desse sistema construtivo

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“…Many alternative technologies have been investigated to reduce the hazard potential of certain waste streams. Stabilisation in a solid state is one of the most common processes for encapsulating toxic species in an inert matrix (such as a cement-based matrix) (Miranda et al 2011, Modolo et al 2011, Pinheiro et al 2013, Siqueira and Holanda 2013. Ceramisation or vitrification may also be implemented, but they require more energy and monetary investment unless a valuable product is obtained that can mitigate these expenses (Mangialardi 2001, Park and Heo 2002, Buruberri et al 2015.…”

Section: Introductionmentioning

confidence: 99%

Characterization of Pulp and Paper Mill Waste for the Production of Waste-Based Cement

Simão

Hotza

Raupp-Pereira

et al. 2019

Rev. Int. Contam. Ambie.

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Waste generation is increasing in many industries. Therefore, effective measures are required to secure an environmentally sustainable and economically viable waste destination. Co-processing in clinker kilns at high temperatures and incorporation into cement matrices may stabilize many types of industrial waste. This paper presents the results of a study that characterized pulp and paper mill waste and their recycling in clinker production. Chemical characterization and estimation of the hazardous potential of lime mud, biomass ash, and wastewater treatment plant (WWTP) sludge were performed in accordance with brazilian standard (NBR) 10004:2004. Biomass ash and WWTP sludge were classified as non-hazardous (class II), while lime mud was classified as hazardous (pH > 12.5, class I). These wastes were mixed (69 wt % lime mud, 29 wt % biomass ash, and 2 wt % WWTP sludge), and the resulting mixture was processed at 1455 ºC to generate 'Ecoclinker'. The clinker was characterized, milled, and mixed with calcium sulphate for use as an 'Ecocement'. Mortars were obtained and cured for periods of seven and twenty-eight days. The hardened product exhibited a mechanical strength of ~20 MPa. The leaching and pH tests indicated that these parameters were within the permitted limits, confirming that this waste-based cement was non-hazardous. Palabras clave: reciclaje de residuos, clínker, mortero RESUMEN La generación de residuos sólidos está aumentando en muchos sectores industriales; por lo tanto, se requieren medidas efectivas para garantizar un descarte de residuos que sea ambientalmente adecuado y económicamente viable. El coprocesamiento en hornos de producción de clínker a altas temperaturas, así como la incorporación en

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Avaliação experimental de blocos prensados de solo-cimento com adição de grits

Cited by 13 publications

References 5 publications

Wastes from pulp and paper mills - a review of generation and recycling alternatives

Wastes from pulp and paper mills - a review of generation and recycling alternatives

Avaliação ambiental do sistema construtivo de alvenaria de blocos de solo-cimento considerando diferentes especificações de projeto

Characterization of Pulp and Paper Mill Waste for the Production of Waste-Based Cement

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