Rock Wool Waste as Supplementary Cementitious Material for Portland Cement-Based Composites

Silva, K. D. C.; Silva, G. C.; Natalli, Juliana Fadini; Mendes, Júlia Castro; Silva, G. J. B.; Peixoto, Ricardo André Fiorotti

doi:10.14359/51701100

Cited by 6 publications

(5 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The ground waste rock wool had also prolonged the induction period of cement hydration at 5 wt% (1 h 17 min), 15 wt% (4 h 34 min), and 20 wt% (6 h 27 min). Beyond the 20% replacement of cement with waste rock wool, the flow spread decreased due to an unfavorable demand for water to moisten the particles’ surface [ 76 ].…”

Section: Repurposing As Fillers In Compositesmentioning

confidence: 99%

Waste Mineral Wool and Its Opportunities—A Review

et al. 2021

View full text Add to dashboard Cite

Massive waste rock wool was generated globally and it caused substantial environmental issues such as landfill and leaching. However, reviews on the recyclability of waste rock wool are scarce. Therefore, this study presents an in-depth review of the characterization and potential usability of waste rock wool. Waste rock wool can be characterized based on its physical properties, chemical composition, and types of contaminants. The review showed that waste rock wool from the manufacturing process is more workable to be recycled for further application than the post-consumer due to its high purity. It also revealed that the pre-treatment method—comminution is vital for achieving mixture homogeneity and enhancing the properties of recycled products. The potential application of waste rock wool is reviewed with key results emphasized to demonstrate the practicality and commercial viability of each option. With a high content of chemically inert compounds such as silicon dioxide (SiO2), calcium oxide (CaO), and aluminum oxide (Al2O3) that improve fire resistance properties, waste rock wool is mainly repurposed as fillers in composite material for construction and building materials. Furthermore, waste rock wool is potentially utilized as an oil, water pollutant, and gas absorbent. To sum up, waste rock wool could be feasibly recycled as a composite material enhancer and utilized as an absorbent for a greener environment.

show abstract

Section: Repurposing As Fillers In Compositesmentioning

confidence: 99%

Waste Mineral Wool and Its Opportunities—A Review

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Segundo Silva (2018), a sílica, quando presente no estado amorfo, está diretamente relacionada à quantidade de hidróxido de cálcio (CH) que pode ser consumido pela atividade pozolânica; sendo assim, é possível que esse rejeito atue como pozolana ao ser aplicado em matrizes cimentícias. Outro fator observado foi a expressiva quantidade de Al2O3, que pode reagir com a cal no momento da hidratação, resultando na formação de aluminatos de cálcio e reduzindo, assim, a quantidade de Portlandita [Ca(OH)2] na matriz.…”

Section: Propriedades Químicas E Mineralógicasunclassified

“…Uma vez determinado pela fluorescência de Raios-X um teor de 58,6% de sílica, pode-se inferir que parte da matéria não-cristalina é constituída por sílica amorfa. A presença de fases amorfas é favorável à finalidade de material cimentício suplementar, pois estruturas com essa característica são mais reativas do que as estruturas cristalinas (SILVA, SILVA, et al, 2018) (MASSAZZA, 1993.…”

Section: Propriedades Químicas E Mineralógicasunclassified

Rejeito Da Mineração De Areia Como Material Cimentício Suplementar

Figueiredo¹,

Santos²,

Kuster³

et al. 2020

≫Congresso Brasileiro De Patologia Das Construções

View full text Add to dashboard Cite

O rejeito proveniente do processamento de material granular destinado à produção de areia industrial e para construção civil é gerado em grande quantidade no Brasil e ainda inexplorado cientificamente. Denominado goma de areia (GA), é um material altamente fino e que representa ônus ao processo de produção. Esse estudo avaliou as características físicas, químicas, mineralógicas e morfológicas da goma de areia, assim como sua aplicação em concretos; com o objetivo de promover sua reinserção na cadeia produtiva. Realizadas as análises propostas, verificou-se na literatura que esse resíduo possui características desejáveis para aplicação como material cimentício suplementar (SCM), incluindo suas propriedades físicas e químicas; como distribuição granulométrica, teores de óxidos presentes, composição de fases e teor de amorfos, visto que todos estes fatores afetam a interação do material com o cimento. Através da avaliação dos concretos produzidos, notou-se que a goma de areia proporcionou melhoria das propriedades físicas e mecânicas das matrizes, apresentando potencial aumento na durabilidade e na resistência a meios agressivos, prevenindo o surgimento de patologias. Palavras-chave: material cimentício suplementar, tecnologia do concreto , rejeito, sustentabilidade.

show abstract

“…Accordingly, many researchers have turned their attention to finding alternative materials to be used as SCMs, focusing on industrial or agriculture waste. Within the first group, it is worth mentioning rock-wool waste [13], electric arc furnace dust (EAFD) [14] and other steel slags, i.e., ladle furnace slag (LFS) [15][16][17][18][19], glass waste [20], cocombustion fly ashes [21] and municipal solid waste incineration (MSWI) bottom ash [22]; in the second, we can mention sugarcane bagasse ash [23] and rice husk ash [24,25]. When dealing with these materials, there are two main challenging objectives that need to be reached: ensuring that the waste is stable, both from a chemical and volumetric point of view, and that it is able to develop a pozzolanic behavior.…”

Section: Introductionmentioning

confidence: 99%

Assessment of a Municipal Solid Waste Incinerator Bottom Ash as a Candidate Pozzolanic Material: Comparison of Test Methods

et al. 2021

View full text Add to dashboard Cite

New generations of green concretes are often consuming large amounts of industrial waste, as recycled or manufactured aggregates and alternative binders substituting ordinary Portland cement. Among the recycled materials that may be used in civil engineering works, construction and demolition waste (C&DW), fly ashes, slags and municipal solid waste incinerator bottom ashes (MSWI BA) are those most diffused, but at the same, they suffer due to a large variability of their properties. However, the market increasingly asks for new materials capable of adding some specific features to construction materials, and one of the most interesting is the pozzolanic activity. Hence, this work deals with an experimental study aimed at assessing the technical feasibility of using an industrial waste comprised largely of MSWI BA, with small quantities of C&DW and electric arc furnace slag (EAFS), in green cement-based mixtures (cement paste and mortars). The aim of the work is to achieve the goal of upcycling such waste and avoiding its disposal and landfilling. Particularly, the test methods for assessing the pozzolanic activity of this waste are discussed, analyzing the efficacy of indirect methods such as the strength activity index (SAI), the conductivity test and the efficiency factor (k), together with a direct method based on lime consumption.

show abstract

Rock Wool Waste as Supplementary Cementitious Material for Portland Cement-Based Composites

Cited by 6 publications

References 34 publications

Waste Mineral Wool and Its Opportunities—A Review

Waste Mineral Wool and Its Opportunities—A Review

Rejeito Da Mineração De Areia Como Material Cimentício Suplementar

Assessment of a Municipal Solid Waste Incinerator Bottom Ash as a Candidate Pozzolanic Material: Comparison of Test Methods

Contact Info

Product

Resources

About