Copper tailings recycling in cement-based composites: A deterministic LCA approach accompanied by microstructure, mechanical, thermal and non-destructive tests

Basit Öğe Kaydı
dc.authorid0000-0003-2905-4515
dc.authorid0000-0001-6067-7337
dc.contributor.authorBekem Kara, İlknur
dc.contributor.authorDurmuş, Gökhan
dc.contributor.authorKara, Cuma
dc.contributor.authorKaplan, Gökhan
dc.date.accessioned2026-07-10T08:29:56Z
dc.date.available2026-07-10T08:29:56Z
dc.date.issued2025
dc.departmentAÇÜ, Borçka Acarlar Meslek Yüksekokulu, İnşaat Teknolojisi Bölümü
dc.departmentAÇÜ, Borçka Acarlar Meslek Yüksekokulu, Yapı Denetimi Bölümü
dc.description.abstractInnovative approaches to sustainable building materials are needed due to the cement industry's high carbon footprint and the environmental management of massive amounts of copper tailings (CT) from mining operations. Using a comprehensive approach, this study aims to evaluate the thermal-mechanical performance and ecological sustainability of CT, a high-silica (>79 %) and distinctly bimodal grain-distribution material from Artvin-Murgul, as a pozzolanic additive in cement-based composites. To achieve this, mortar series were created in which CT was added to cement at weight percentages ranging from 0 % to 15 %. Mechanical, thermal, microstructural, and pozzolanic activity analyses were employed to evaluate the performance of the samples. A cradle-to-grave Life Cycle Assessment (LCA) employing the EF 3.1 method in compliance with ISO 14040/44 standards was also used to evaluate environmental performance. With a pozzolanic activity index of 76.2 %, the results verified that CT is a pozzolanic material. The 28-day compressive strength was maintained at 52.5 MPa, with the best performance from the 5 % CT replacement. The composite's higher density, however, resulted in a slightly lower specific strength compared to the control sample, underscoring the trade-off between mass efficiency and environmental advantages. Additionally, there was a 2.1 % increase in flexural strength (7.17 MPa). The success of the pozzolanic reaction has been chemically verified through microstructural analyses. The weak Ca(OH)2 phase was consumed by the 5 % CT addition, which significantly decreased the Ca/Si ratio in the matrix and resulted in a more robust C-S-H structure. According to LCA results, applying 15 % CT resulted in notable improvements in Global Warming Potential (GWP) and all impact categories, particularly acidification and eutrophication. A 12.4 % decrease in net lifecycle GWP was computed, taking carbonation effects into account. In addition to enhancing mechanical performance, this study demonstrates that using CT at the optimal rate offers substantial environmental advantages, as evidenced by LCA. This process effectively turns industrial waste into a valuable, eco-friendly building material.
dc.identifier.doi10.1016/j.mineng.2025.109866
dc.identifier.issn0892-6875
dc.identifier.issue2
dc.identifier.urihttps://hdl.handle.net/11494/6309
dc.identifier.volume235
dc.identifier.wosWOS:001606999600001
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.institutionauthorBekem Kara, İlknur
dc.institutionauthorKara, Cuma
dc.institutionauthorid0000-0003-2905-4515
dc.language.isoen
dc.publisherPERGAMON-ELSEVIER SCIENCE LTD
dc.relation.ispartofMINERALS ENGINEERING
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/embargoedAccess
dc.subjectCopper tailings
dc.subjectSustainability
dc.subjectHigh temperature effect
dc.subjectLife cycle assessment
dc.subjectMicrostructure
dc.titleCopper tailings recycling in cement-based composites: A deterministic LCA approach accompanied by microstructure, mechanical, thermal and non-destructive tests
dc.typeArticle

Dosyalar

Orijinal paket
Listeleniyor 1 - 1 / 1
[ X ]
İsim:
6309.pdf
Boyut:
12.93 MB
Biçim:
Adobe Portable Document Format
İndir
Lisans paketi
Listeleniyor 1 - 1 / 1
[ X ]
İsim:
license.txt
Boyut:
1.17 KB
Biçim:
Item-specific license agreed upon to submission
Açıklama:
İndir

Koleksiyon

WoS İndeksli Yayınlar Koleksiyonu
Borçka Acarlar Meslek Yüksekokulu Yayın Koleksiyonu