Potential use of spherical glass sourced from cathode ray tube funnel glass for the application as coarse aggregate in concrete

Managing discarded waste cathode ray tube (CRT) funnels glass has become a major concern worldwide because it has toxic effects on the environment and human health if the hazardous lead leached to the surroundings. The common way of recycling this waste is by crushing it, where it was used as an alt...

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Autores principales:	Nurul Noraziemah Mohd Pauzi, Nur Izie Adiana Abidin, M. Jamil
Formato:	article
Lenguaje:	EN
Publicado:	Tamkang University Press 2021
Materias:	waste glass cathode ray tube lead concrete strength Engineering (General). Civil engineering (General) TA1-2040 Chemical engineering TP155-156 Physics QC1-999
Acceso en línea:	https://doaj.org/article/b951b2271f2f4955a4b98e5286de3886
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spelling	oai:doaj.org-article:b951b2271f2f4955a4b98e5286de38862021-11-25T05:06:34ZPotential use of spherical glass sourced from cathode ray tube funnel glass for the application as coarse aggregate in concrete10.6180/jase.202206_25(3).00102708-99672708-9975https://doaj.org/article/b951b2271f2f4955a4b98e5286de38862021-11-01T00:00:00Zhttp://jase.tku.edu.tw/articles/jase-202206-25-3-0010https://doaj.org/toc/2708-9967https://doaj.org/toc/2708-9975Managing discarded waste cathode ray tube (CRT) funnels glass has become a major concern worldwide because it has toxic effects on the environment and human health if the hazardous lead leached to the surroundings. The common way of recycling this waste is by crushing it, where it was used as an alternative fine aggregate for concrete production. But the crushing technique has led to the formation of micro-cracks in the funnel glass products, causing to high lead leaching rate. On the other hand, recycling the CRT funnel glass waste through melting and annealing operations in producing the spherical CRT glass (GS) has proven will not danger the environment due to the leaching of lead. Therefore, this paper explored the feasibility of using GS as partial (20%, 50%) and full replacements (100%) of natural coarse aggregates in concrete. The workability, density, compressive strength, and splitting tensile strength were investigated. Given the importance of materials and exposure, the influence of silica fume content and CRT concrete strength subjected to high temperature were evaluated. Overall, the inclusion of GS increased the workability and decreased the density, but reduced the compressive and tensile strength. The use of GS as coarse aggregates should be limited to below 50% due to its negative impacts on the strength aspects have become obvious. However, the results show that the CRT concrete made with 20% GS and 10% silica fume have comparable properties with the control, 52 MPa where only 7% lower than control concrete. The addition of silica fume able to counteract the negative effect of GS.Nurul Noraziemah Mohd PauziNur Izie Adiana AbidinM. JamilTamkang University Pressarticlewaste glasscathode ray tubeleadconcretestrengthEngineering (General). Civil engineering (General)TA1-2040Chemical engineeringTP155-156PhysicsQC1-999ENJournal of Applied Science and Engineering, Vol 25, Iss 3, Pp 437-445 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	waste glass cathode ray tube lead concrete strength Engineering (General). Civil engineering (General) TA1-2040 Chemical engineering TP155-156 Physics QC1-999
spellingShingle	waste glass cathode ray tube lead concrete strength Engineering (General). Civil engineering (General) TA1-2040 Chemical engineering TP155-156 Physics QC1-999 Nurul Noraziemah Mohd Pauzi Nur Izie Adiana Abidin M. Jamil Potential use of spherical glass sourced from cathode ray tube funnel glass for the application as coarse aggregate in concrete
description	Managing discarded waste cathode ray tube (CRT) funnels glass has become a major concern worldwide because it has toxic effects on the environment and human health if the hazardous lead leached to the surroundings. The common way of recycling this waste is by crushing it, where it was used as an alternative fine aggregate for concrete production. But the crushing technique has led to the formation of micro-cracks in the funnel glass products, causing to high lead leaching rate. On the other hand, recycling the CRT funnel glass waste through melting and annealing operations in producing the spherical CRT glass (GS) has proven will not danger the environment due to the leaching of lead. Therefore, this paper explored the feasibility of using GS as partial (20%, 50%) and full replacements (100%) of natural coarse aggregates in concrete. The workability, density, compressive strength, and splitting tensile strength were investigated. Given the importance of materials and exposure, the influence of silica fume content and CRT concrete strength subjected to high temperature were evaluated. Overall, the inclusion of GS increased the workability and decreased the density, but reduced the compressive and tensile strength. The use of GS as coarse aggregates should be limited to below 50% due to its negative impacts on the strength aspects have become obvious. However, the results show that the CRT concrete made with 20% GS and 10% silica fume have comparable properties with the control, 52 MPa where only 7% lower than control concrete. The addition of silica fume able to counteract the negative effect of GS.
format	article
author	Nurul Noraziemah Mohd Pauzi Nur Izie Adiana Abidin M. Jamil
author_facet	Nurul Noraziemah Mohd Pauzi Nur Izie Adiana Abidin M. Jamil
author_sort	Nurul Noraziemah Mohd Pauzi
title	Potential use of spherical glass sourced from cathode ray tube funnel glass for the application as coarse aggregate in concrete
title_short	Potential use of spherical glass sourced from cathode ray tube funnel glass for the application as coarse aggregate in concrete
title_full	Potential use of spherical glass sourced from cathode ray tube funnel glass for the application as coarse aggregate in concrete
title_fullStr	Potential use of spherical glass sourced from cathode ray tube funnel glass for the application as coarse aggregate in concrete
title_full_unstemmed	Potential use of spherical glass sourced from cathode ray tube funnel glass for the application as coarse aggregate in concrete
title_sort	potential use of spherical glass sourced from cathode ray tube funnel glass for the application as coarse aggregate in concrete
publisher	Tamkang University Press
publishDate	2021
url	https://doaj.org/article/b951b2271f2f4955a4b98e5286de3886
work_keys_str_mv	AT nurulnoraziemahmohdpauzi potentialuseofsphericalglasssourcedfromcathoderaytubefunnelglassfortheapplicationascoarseaggregateinconcrete AT nurizieadianaabidin potentialuseofsphericalglasssourcedfromcathoderaytubefunnelglassfortheapplicationascoarseaggregateinconcrete AT mjamil potentialuseofsphericalglasssourcedfromcathoderaytubefunnelglassfortheapplicationascoarseaggregateinconcrete
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Potential use of spherical glass sourced from cathode ray tube funnel glass for the application as coarse aggregate in concrete

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