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Oxypolymerization in the Manufacture of Bricks Based on Gold Mine Tailings and Cooking Oil as a Binder.

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Title: Oxypolymerization in the Manufacture of Bricks Based on Gold Mine Tailings and Cooking Oil as a Binder.
Authors: Zúñiga-Suárez, Alonso Rodrigo1 (AUTHOR), Zúñiga-Torres, Liliana Alexandra2 (AUTHOR) liliana.zuniga@alumnos.upm.es, Hernández-Olivares, Francisco2,3 (AUTHOR), Zúñiga-Torres, Berenice Cecibel1 (AUTHOR), Gualpa-Guzmán, Guido Giuliano2,3 (AUTHOR), Rodriguez-Tapia, Jhon Patricio1,3 (AUTHOR)
Source: Materials (1996-1944). Jun2026, Vol. 19 Issue 11, p2284. 23p.
Subjects: Metal tailings, Crosslinking (Polymerization), Compressive strength, Edible fats & oils, Sustainable buildings, Construction materials, Circular economy
Abstract: This study presents the development of an eco-friendly brick for mining, a sustainable composite material manufactured from gold mine tailings and used cooking oil (UCO) through a thermal oxypolymerization process. Unlike conventional stabilization methods, which often require additional materials beyond tailings or have a high carbon footprint in their production, this approach uses oxypolymerization to transform these two waste products into novel building materials. The use of various percentages of UCO at different heating temperatures was evaluated to identify the optimal mixture, determining that a 9% UCO content and a 9 h cycle are key conditions for inducing fatty acid crosslinking. This logical relationship between heat treatment and dosage allows the organic binder to consolidate the mineral matrix, giving the material a compressive strength of 19.12 MPa and a flexural strength of 8.24 MPa, exceeding the thresholds of the NTE INEN 297 standard. The low water absorption (2.86%) is attributed to the densification of the matrix and the hydrophobic nature of the polymerized oil, indicators of its structural durability. This work is the first to use Ecuadorian tailings as the sole mineral aggregate, validating a high-efficiency, low-impact product for sustainable construction under the principles of the circular economy. [ABSTRACT FROM AUTHOR]
Copyright of Materials (1996-1944) 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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DbLabel: Engineering Source
An: 194587195
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PubType: Academic Journal
PubTypeId: academicJournal
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  Data: Oxypolymerization in the Manufacture of Bricks Based on Gold Mine Tailings and Cooking Oil as a Binder.
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  Data: <searchLink fieldCode="JN" term="%22Materials+%281996-1944%29%22">Materials (1996-1944)</searchLink>. Jun2026, Vol. 19 Issue 11, p2284. 23p.
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  Data: <searchLink fieldCode="DE" term="%22Metal+tailings%22">Metal tailings</searchLink><br /><searchLink fieldCode="DE" term="%22Crosslinking+%28Polymerization%29%22">Crosslinking (Polymerization)</searchLink><br /><searchLink fieldCode="DE" term="%22Compressive+strength%22">Compressive strength</searchLink><br /><searchLink fieldCode="DE" term="%22Edible+fats+%26+oils%22">Edible fats & oils</searchLink><br /><searchLink fieldCode="DE" term="%22Sustainable+buildings%22">Sustainable buildings</searchLink><br /><searchLink fieldCode="DE" term="%22Construction+materials%22">Construction materials</searchLink><br /><searchLink fieldCode="DE" term="%22Circular+economy%22">Circular economy</searchLink>
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  Label: Abstract
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  Data: This study presents the development of an eco-friendly brick for mining, a sustainable composite material manufactured from gold mine tailings and used cooking oil (UCO) through a thermal oxypolymerization process. Unlike conventional stabilization methods, which often require additional materials beyond tailings or have a high carbon footprint in their production, this approach uses oxypolymerization to transform these two waste products into novel building materials. The use of various percentages of UCO at different heating temperatures was evaluated to identify the optimal mixture, determining that a 9% UCO content and a 9 h cycle are key conditions for inducing fatty acid crosslinking. This logical relationship between heat treatment and dosage allows the organic binder to consolidate the mineral matrix, giving the material a compressive strength of 19.12 MPa and a flexural strength of 8.24 MPa, exceeding the thresholds of the NTE INEN 297 standard. The low water absorption (2.86%) is attributed to the densification of the matrix and the hydrophobic nature of the polymerized oil, indicators of its structural durability. This work is the first to use Ecuadorian tailings as the sole mineral aggregate, validating a high-efficiency, low-impact product for sustainable construction under the principles of the circular economy. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Materials (1996-1944) 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/ma19112284
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        Text: English
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        PageCount: 23
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      – SubjectFull: Metal tailings
        Type: general
      – SubjectFull: Crosslinking (Polymerization)
        Type: general
      – SubjectFull: Compressive strength
        Type: general
      – SubjectFull: Edible fats & oils
        Type: general
      – SubjectFull: Sustainable buildings
        Type: general
      – SubjectFull: Construction materials
        Type: general
      – SubjectFull: Circular economy
        Type: general
    Titles:
      – TitleFull: Oxypolymerization in the Manufacture of Bricks Based on Gold Mine Tailings and Cooking Oil as a Binder.
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            NameFull: Zúñiga-Suárez, Alonso Rodrigo
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            NameFull: Zúñiga-Torres, Liliana Alexandra
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            NameFull: Hernández-Olivares, Francisco
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            NameFull: Zúñiga-Torres, Berenice Cecibel
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            NameFull: Gualpa-Guzmán, Guido Giuliano
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            NameFull: Rodriguez-Tapia, Jhon Patricio
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            – D: 01
              M: 06
              Text: Jun2026
              Type: published
              Y: 2026
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              Value: 19
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              Value: 11
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            – TitleFull: Materials (1996-1944)
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