Potential for material valorization of composites (glass fiber in polyester resin) in concrete: performance evaluation on mortar
IntroductionGlass fibers with polyester resin structural composites are highly sought after in many sectors such as transportation industries, thanks to their low density and fairly good mechanical properties. However, their end-of-life management is not yet satisfactory. Composites mostly end in en...
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Frontiers Media S.A.
2024-10-01
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| Series: | Frontiers in Materials |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fmats.2024.1416647/full |
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| author | Agnès Zambon Mylène Deleglise-Lagardere |
| author_facet | Agnès Zambon Mylène Deleglise-Lagardere |
| author_sort | Agnès Zambon |
| collection | DOAJ |
| description | IntroductionGlass fibers with polyester resin structural composites are highly sought after in many sectors such as transportation industries, thanks to their low density and fairly good mechanical properties. However, their end-of-life management is not yet satisfactory. Composites mostly end in energy recovery in the best-case scenario or, worse, in landfills. Transformation into shreds and powders for reuse as a new source of raw material for the construction sector (concrete) is an economically and environmentally attractive recovery solution. The present study investigates the development of a concrete filled with glass/polyester composite shreds.MethodsTo this end, rheological (cone spread) and physico-mechanical (density and mechanical strength in flexion and compression) characterization tests were carried out. Several mix designs were tested in order to understand the impact of introducing composite shreds as a substitute for sand. Composite shreds were introduced in the following ratios by volume: 0, 1, 1.5, 2, 2.5, 3, and 7% with water and cement ratio equal to 0.5, 0.6, and 0.7.Results and discussionThe results obtained indicate that workability decreases with the substitution of sand by shreds. For a substitution of sand by shreds of 2%, it is relatively small, and the pouring of the mortar is still feasible. The decrease can be attributed to the water absorption of the composite shreds. Concerning mechanical results, for formulations with a substitution percentage of composite shreds lower than 3%, the mechanical strength (both compression test and flexure test) is slightly higher than that of the reference sample. The increase in compressive strength that can be observed is at its maximum, equal to 10%, compared to that of the reference sample. These results are in line with density results, which are also slightly higher than that of the reference sample. This effect can be attributed to water absorption of composite shreds and the filling effect of the powders. For a percentage of substitution equal to 7%, the mechanical strength is lower than that of the reference sample (30% decrease), with a compressive strength equal to 33 MPa (47 MPa for the reference sample). For this percentage of substitution equal to 7%, a decrease in density is also observed (6% decrease) and can be explained by the porosity created by the incorporation of the composite shreds into the mortar. |
| format | Article |
| id | doaj-art-ed99b1e54dbb49efa574ffae90974697 |
| institution | OA Journals |
| issn | 2296-8016 |
| language | English |
| publishDate | 2024-10-01 |
| publisher | Frontiers Media S.A. |
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| series | Frontiers in Materials |
| spelling | doaj-art-ed99b1e54dbb49efa574ffae909746972025-08-20T02:12:14ZengFrontiers Media S.A.Frontiers in Materials2296-80162024-10-011110.3389/fmats.2024.14166471416647Potential for material valorization of composites (glass fiber in polyester resin) in concrete: performance evaluation on mortarAgnès Zambon0Mylène Deleglise-Lagardere1University Lille, IMT Nord Europe University Artois, Yncrea Hauts de France, Laboratoire de Génie Civil et géo-Environnement, Lille, FranceIMT Nord Europe, Institut Mines-Télécom, University Lille, CERI Matériaux et Procédés, Lille, FranceIntroductionGlass fibers with polyester resin structural composites are highly sought after in many sectors such as transportation industries, thanks to their low density and fairly good mechanical properties. However, their end-of-life management is not yet satisfactory. Composites mostly end in energy recovery in the best-case scenario or, worse, in landfills. Transformation into shreds and powders for reuse as a new source of raw material for the construction sector (concrete) is an economically and environmentally attractive recovery solution. The present study investigates the development of a concrete filled with glass/polyester composite shreds.MethodsTo this end, rheological (cone spread) and physico-mechanical (density and mechanical strength in flexion and compression) characterization tests were carried out. Several mix designs were tested in order to understand the impact of introducing composite shreds as a substitute for sand. Composite shreds were introduced in the following ratios by volume: 0, 1, 1.5, 2, 2.5, 3, and 7% with water and cement ratio equal to 0.5, 0.6, and 0.7.Results and discussionThe results obtained indicate that workability decreases with the substitution of sand by shreds. For a substitution of sand by shreds of 2%, it is relatively small, and the pouring of the mortar is still feasible. The decrease can be attributed to the water absorption of the composite shreds. Concerning mechanical results, for formulations with a substitution percentage of composite shreds lower than 3%, the mechanical strength (both compression test and flexure test) is slightly higher than that of the reference sample. The increase in compressive strength that can be observed is at its maximum, equal to 10%, compared to that of the reference sample. These results are in line with density results, which are also slightly higher than that of the reference sample. This effect can be attributed to water absorption of composite shreds and the filling effect of the powders. For a percentage of substitution equal to 7%, the mechanical strength is lower than that of the reference sample (30% decrease), with a compressive strength equal to 33 MPa (47 MPa for the reference sample). For this percentage of substitution equal to 7%, a decrease in density is also observed (6% decrease) and can be explained by the porosity created by the incorporation of the composite shreds into the mortar.https://www.frontiersin.org/articles/10.3389/fmats.2024.1416647/fullmaterial valorizationglass fiberpolyester resincompositeconcreteresource preservation |
| spellingShingle | Agnès Zambon Mylène Deleglise-Lagardere Potential for material valorization of composites (glass fiber in polyester resin) in concrete: performance evaluation on mortar Frontiers in Materials material valorization glass fiber polyester resin composite concrete resource preservation |
| title | Potential for material valorization of composites (glass fiber in polyester resin) in concrete: performance evaluation on mortar |
| title_full | Potential for material valorization of composites (glass fiber in polyester resin) in concrete: performance evaluation on mortar |
| title_fullStr | Potential for material valorization of composites (glass fiber in polyester resin) in concrete: performance evaluation on mortar |
| title_full_unstemmed | Potential for material valorization of composites (glass fiber in polyester resin) in concrete: performance evaluation on mortar |
| title_short | Potential for material valorization of composites (glass fiber in polyester resin) in concrete: performance evaluation on mortar |
| title_sort | potential for material valorization of composites glass fiber in polyester resin in concrete performance evaluation on mortar |
| topic | material valorization glass fiber polyester resin composite concrete resource preservation |
| url | https://www.frontiersin.org/articles/10.3389/fmats.2024.1416647/full |
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