Experimental evaluation of cement mortars with recycled brass fibres from the electrical discharge machining process

Borinaga-Treviño, R.; Orbe, A.; Canales, J.; Norambuena-Contreras, Jose

doi:10.1016/j.conbuildmat.2020.118522

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Experimental evaluation of cement mortars with recycled brass fibres from the electrical discharge machining process

R. Borinaga-Treviño

, A. Orbe

, J. Canales, Jose Norambuena-Contreras

Construction and Building Materials, Volume: 246, Start page: 118522

Swansea University Author: Jose Norambuena-Contreras

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DOI (Published version): 10.1016/j.conbuildmat.2020.118522

Abstract

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...

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Published in:	Construction and Building Materials
ISSN:	0950-0618
Published:	Elsevier BV 2020
Online Access:	Check full text
URI:	https://cronfa.swan.ac.uk/Record/cronfa66778
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spelling	v2 66778 2024-06-20 Experimental evaluation of cement mortars with recycled brass fibres from the electrical discharge machining process 73c6854ebb10465fbf7faab297135641 0000-0001-8327-2236 Jose Norambuena-Contreras Jose Norambuena-Contreras true false 2024-06-20 ACEM 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. Journal Article Construction and Building Materials 246 118522 Elsevier BV 0950-0618 Cement mortars; Brass fibres; Electrical discharge machining; Ultrasonic time; Waste; Thermal conductivity 20 6 2020 2020-06-20 10.1016/j.conbuildmat.2020.118522 COLLEGE NANME Aerospace, Civil, Electrical, and Mechanical Engineering COLLEGE CODE ACEM Swansea University 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. 2024-07-26T14:25:56.0025661 2024-06-20T10:58:55.5240232 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Aerospace Engineering R. Borinaga-Treviño 0000-0002-0910-4186 1 A. Orbe 0000-0002-7568-0456 2 J. Canales 3 Jose Norambuena-Contreras 0000-0001-8327-2236 4 66778__31005__ecc50dd8c8c44312b68a11cb3cdd2104.pdf 66778.VoR.pdf 2024-07-26T14:24:36.3696051 Output 2343116 application/pdf Version of Record true Copyright: 2020 The Authors. This is an open access article under the CC BY-NC-ND license. true eng http://creativecommons.org/licenses/by-nc-nd/4.0/
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 Jose Norambuena-Contreras
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
author_id_str_mv	73c6854ebb10465fbf7faab297135641
author_id_fullname_str_mv	73c6854ebb10465fbf7faab297135641_***_Jose Norambuena-Contreras
author	Jose Norambuena-Contreras
author2	R. Borinaga-Treviño A. Orbe J. Canales Jose Norambuena-Contreras
format	Journal article
container_title	Construction and Building Materials
container_volume	246
container_start_page	118522
publishDate	2020
institution	Swansea University
issn	0950-0618
doi_str_mv	10.1016/j.conbuildmat.2020.118522
publisher	Elsevier BV
college_str	Faculty of Science and Engineering
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hierarchy_top_title	Faculty of Science and Engineering
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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.
published_date	2020-06-20T14:25:55Z
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score	11.035655

Experimental evaluation of cement mortars with recycled brass fibres from the electrical discharge machining process

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