Experimental evaluation of cement mortars with recycled brass fibres from the electrical discharge machining process
This paper aims to evaluate the effect of recycled brass fibres on the physical, thermal and mechanical properties of cementitious mortars. For that purpose, seven different mortars, with the same water/cement ratio but using two different brass fibres were manufactured. Not-machined brass fibres we...
| Autores: | , , , |
|---|---|
| Tipo de recurso: | artículo |
| Fecha de publicación: | 2020 |
| País: | España |
| Institución: | Universidad del País Vasco |
| Repositorio: | Addi. Archivo Digital para la Docencia y la Investigación |
| OAI Identifier: | oai:addi.ehu.eus:10810/49979 |
| Acceso en línea: | http://hdl.handle.net/10810/49979 |
| Access Level: | acceso abierto |
| Palabra clave: | cement mortars brass fibres electrical discharge machining ultrasonic time waste thermal conductivity mechanical-properties concrete diffusivity composites beha |
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Experimental evaluation of cement mortars with recycled brass fibres from the electrical discharge machining processBorinaga Treviño, RoqueOrbe Mateo, AimarCanales Abaitua, JavierNorambuena Contreras, J.cement mortarsbrass fibreselectrical discharge machiningultrasonic timewastethermal conductivitymechanical-propertiesconcretediffusivitycompositesbehaThis paper aims to evaluate the effect of recycled brass fibres on the physical, thermal and mechanical properties of cementitious mortars. For that purpose, seven different mortars, with the same water/cement ratio but using two different brass fibres were manufactured. Not-machined brass fibres were used as a reference and compared to the waste brass fibres obtained as a by-product of wire cutting methods through electrical discharge machines. Both fibres were added to the mortars in proportions of 0.25%, 0.5% and 1% by volume of mortar. The morphology and presence of elements in the fibres were evaluated by scanning electron microscopy (SEM) coupled with energy dispersive X-ray spectroscopy (EDX). In addition, ultrasonic pulse velocity and thermal conductivity were measured to evaluate the mortar quality and the fibre dispersion into the mortar specimens. Mechanical properties were studied through flexural and compression tests. Since the fibres present a reduced length, the effect on both porosity and bulk density is negligible and the reduction on ultrasonic pulse velocity and compression strength and the slight increment on flexural strength is not remarkable due to the limited anchorage provided. Nonetheless, the improvement in the thermal conductivity of the developed mortars with recycled brass fibres, supports focusing on the niche market of heating installations, such as underfloor heating or closed-loop geothermal heat exchangers.This work has been partly financed within the European Horizon 2020 Joint Technology Initiative Shift2Rail through contract no. 826255 (IN2TRACK2). This work has also been co-financed with the project Elkartek 2019 ref. KK-2019/00023 (GOLIAT2). The authors also wish to thank the Basque Government for financial assistance through IT919-16 and IT1314-19.ElsevierEuropean Commission202120212020info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10810/49979reponame:Addi. Archivo Digital para la Docencia y la Investigacióninstname:Universidad del País VascoInglésinfo:eu-repo/grantAgreement/EC/H2020/826255https://www.sciencedirect.com/science/article/pii/S0950061820305274?via%3Dihubinfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-nd/3.0/es/2020 The Authors. Published by Elsevier Ltd. This isanopenaccessarticleundertheCCBY-NC-NDlicense(http://creativecommons.org/licenses/by-nc-nd/4.0/)Atribución-NoComercial-SinDerivadas 3.0 Españaoai:addi.ehu.eus:10810/499792026-06-18T09:23:17Z |
| dc.title.none.fl_str_mv |
Experimental evaluation of cement mortars with recycled brass fibres from the electrical discharge machining process |
| title |
Experimental evaluation of cement mortars with recycled brass fibres from the electrical discharge machining process |
| spellingShingle |
Experimental evaluation of cement mortars with recycled brass fibres from the electrical discharge machining process Borinaga Treviño, Roque cement mortars brass fibres electrical discharge machining ultrasonic time waste thermal conductivity mechanical-properties concrete diffusivity composites beha |
| title_short |
Experimental evaluation of cement mortars with recycled brass fibres from the electrical discharge machining process |
| title_full |
Experimental evaluation of cement mortars with recycled brass fibres from the electrical discharge machining process |
| title_fullStr |
Experimental evaluation of cement mortars with recycled brass fibres from the electrical discharge machining process |
| title_full_unstemmed |
Experimental evaluation of cement mortars with recycled brass fibres from the electrical discharge machining process |
| title_sort |
Experimental evaluation of cement mortars with recycled brass fibres from the electrical discharge machining process |
| dc.creator.none.fl_str_mv |
Borinaga Treviño, Roque Orbe Mateo, Aimar Canales Abaitua, Javier Norambuena Contreras, J. |
| author |
Borinaga Treviño, Roque |
| author_facet |
Borinaga Treviño, Roque Orbe Mateo, Aimar Canales Abaitua, Javier Norambuena Contreras, J. |
| author_role |
author |
| author2 |
Orbe Mateo, Aimar Canales Abaitua, Javier Norambuena Contreras, J. |
| author2_role |
author author author |
| dc.contributor.none.fl_str_mv |
European Commission |
| dc.subject.none.fl_str_mv |
cement mortars brass fibres electrical discharge machining ultrasonic time waste thermal conductivity mechanical-properties concrete diffusivity composites beha |
| topic |
cement mortars brass fibres electrical discharge machining ultrasonic time waste thermal conductivity mechanical-properties concrete diffusivity composites beha |
| description |
This paper aims to evaluate the effect of recycled brass fibres on the physical, thermal and mechanical properties of cementitious mortars. For that purpose, seven different mortars, with the same water/cement ratio but using two different brass fibres were manufactured. Not-machined brass fibres were used as a reference and compared to the waste brass fibres obtained as a by-product of wire cutting methods through electrical discharge machines. Both fibres were added to the mortars in proportions of 0.25%, 0.5% and 1% by volume of mortar. The morphology and presence of elements in the fibres were evaluated by scanning electron microscopy (SEM) coupled with energy dispersive X-ray spectroscopy (EDX). In addition, ultrasonic pulse velocity and thermal conductivity were measured to evaluate the mortar quality and the fibre dispersion into the mortar specimens. Mechanical properties were studied through flexural and compression tests. Since the fibres present a reduced length, the effect on both porosity and bulk density is negligible and the reduction on ultrasonic pulse velocity and compression strength and the slight increment on flexural strength is not remarkable due to the limited anchorage provided. Nonetheless, the improvement in the thermal conductivity of the developed mortars with recycled brass fibres, supports focusing on the niche market of heating installations, such as underfloor heating or closed-loop geothermal heat exchangers. |
| publishDate |
2020 |
| dc.date.none.fl_str_mv |
2020 2021 2021 |
| dc.type.none.fl_str_mv |
info:eu-repo/semantics/article |
| format |
article |
| dc.identifier.none.fl_str_mv |
http://hdl.handle.net/10810/49979 |
| url |
http://hdl.handle.net/10810/49979 |
| dc.language.none.fl_str_mv |
Inglés |
| language_invalid_str_mv |
Inglés |
| dc.relation.none.fl_str_mv |
info:eu-repo/grantAgreement/EC/H2020/826255 https://www.sciencedirect.com/science/article/pii/S0950061820305274?via%3Dihub |
| dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-nd/3.0/es/ Atribución-NoComercial-SinDerivadas 3.0 España |
| eu_rights_str_mv |
openAccess |
| rights_invalid_str_mv |
http://creativecommons.org/licenses/by-nc-nd/3.0/es/ Atribución-NoComercial-SinDerivadas 3.0 España |
| dc.format.none.fl_str_mv |
application/pdf |
| dc.publisher.none.fl_str_mv |
Elsevier |
| publisher.none.fl_str_mv |
Elsevier |
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reponame:Addi. Archivo Digital para la Docencia y la Investigación instname:Universidad del País Vasco |
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Universidad del País Vasco |
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Addi. Archivo Digital para la Docencia y la Investigación |
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Addi. Archivo Digital para la Docencia y la Investigación |
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15,300724 |