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Evaluation of the Alterability of Natural and Artificial Agglomerated Stones Produced in Epoxy Matrix.

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Title: Evaluation of the Alterability of Natural and Artificial Agglomerated Stones Produced in Epoxy Matrix.
Authors: Castilho, Evanizis Dias Frizzera1 (AUTHOR), Gadioli, Mônica Castoldi Borlini2 (AUTHOR), Aguiar, Mariane Costalonga de3 (AUTHOR), Marvila, Markssuel Teixeira4 (AUTHOR), Fontes Vieira, Carlos Mauricio5 (AUTHOR), Monteiro, Sergio Neves6 (AUTHOR), Azevedo, Afonso Rangel Garcez de1,5 (AUTHOR) afonso@uenf.br
Source: Polymers (20734360). May2026, Vol. 18 Issue 10, p1164. 26p.
Subjects: Sustainable construction, Epoxy resins, Industrial waste research, Weathering, Circular economy, Flexibility (Mechanics), Mechanical behavior of materials, Stone industry
Abstract: The growing demand for sustainable solutions in civil construction has driven the use of industrial waste in the formulation of new materials. This study evaluated the alterability of artificial stone slabs produced with 87% ornamental stone waste (Dumont Quartzite and Preto São Gabriel Granite) and 13% epoxy matrix, using the vacuum vibro-thermo-compression technique. Alterability was tested against staining agents, chemical attack, wetting and drying cycles, UV radiation, salt crystallization, three-point flexural strength test after freeze–thaw cycles, and natural weathering. Quantitative results revealed high physical stability, with mass loss varying only between 0.11% and 0.23% in wetting and drying cycles. In salt crystallization, mass loss ranged from 0.38% to 0.47%, lower than the rates of 0.87% and 1.36% reported in the literature for similar materials. Regarding mechanical performance, freeze–thaw cycles caused reductions in flexural strength between 11.66% and 31.59%; however, the stones maintained final strength values above 20 MPa, classifying them as very high-strength materials. The results indicated good physical and chemical stability of the materials, with low mass loss and preservation of mechanical properties, except under UV radiation and natural weathering, which caused significant chromatic alterations. The data obtained demonstrate the viability of applying these stones in indoor environments, promoting the valorization of waste and contributing to the circular economy. [ABSTRACT FROM AUTHOR]
Copyright of Polymers (20734360) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Evaluation of the Alterability of Natural and Artificial Agglomerated Stones Produced in Epoxy Matrix.
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  Data: <searchLink fieldCode="DE" term="%22Sustainable+construction%22">Sustainable construction</searchLink><br /><searchLink fieldCode="DE" term="%22Epoxy+resins%22">Epoxy resins</searchLink><br /><searchLink fieldCode="DE" term="%22Industrial+waste+research%22">Industrial waste research</searchLink><br /><searchLink fieldCode="DE" term="%22Weathering%22">Weathering</searchLink><br /><searchLink fieldCode="DE" term="%22Circular+economy%22">Circular economy</searchLink><br /><searchLink fieldCode="DE" term="%22Flexibility+%28Mechanics%29%22">Flexibility (Mechanics)</searchLink><br /><searchLink fieldCode="DE" term="%22Mechanical+behavior+of+materials%22">Mechanical behavior of materials</searchLink><br /><searchLink fieldCode="DE" term="%22Stone+industry%22">Stone industry</searchLink>
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  Label: Abstract
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  Data: The growing demand for sustainable solutions in civil construction has driven the use of industrial waste in the formulation of new materials. This study evaluated the alterability of artificial stone slabs produced with 87% ornamental stone waste (Dumont Quartzite and Preto São Gabriel Granite) and 13% epoxy matrix, using the vacuum vibro-thermo-compression technique. Alterability was tested against staining agents, chemical attack, wetting and drying cycles, UV radiation, salt crystallization, three-point flexural strength test after freeze–thaw cycles, and natural weathering. Quantitative results revealed high physical stability, with mass loss varying only between 0.11% and 0.23% in wetting and drying cycles. In salt crystallization, mass loss ranged from 0.38% to 0.47%, lower than the rates of 0.87% and 1.36% reported in the literature for similar materials. Regarding mechanical performance, freeze–thaw cycles caused reductions in flexural strength between 11.66% and 31.59%; however, the stones maintained final strength values above 20 MPa, classifying them as very high-strength materials. The results indicated good physical and chemical stability of the materials, with low mass loss and preservation of mechanical properties, except under UV radiation and natural weathering, which caused significant chromatic alterations. The data obtained demonstrate the viability of applying these stones in indoor environments, promoting the valorization of waste and contributing to the circular economy. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
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  Data: <i>Copyright of Polymers (20734360) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.3390/polym18101164
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        Text: English
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        PageCount: 26
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      – SubjectFull: Sustainable construction
        Type: general
      – SubjectFull: Epoxy resins
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      – SubjectFull: Industrial waste research
        Type: general
      – SubjectFull: Weathering
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      – SubjectFull: Circular economy
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      – SubjectFull: Flexibility (Mechanics)
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      – SubjectFull: Mechanical behavior of materials
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      – SubjectFull: Stone industry
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              Text: May2026
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