Effect of the addition and processing of glass polishing waste on the durability of geopolymeric mortars

The waste from the flat glass polishing process for civil construction is generally discarded in landfills. Despite some researchers evaluating its application in the development of alternative building materials, its added value is still a barrier. The objective of this research is to evaluate the...

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Main Authors: de Azevedo, A.R.G., Marvila, M.T., Ali, M., Khan, M.I., Masood, F., Vieira, C.M.F.
Format: Article
Published: Elsevier Ltd 2021
Online Access:https://www.scopus.com/inward/record.uri?eid=2-s2.0-85113380085&doi=10.1016%2fj.cscm.2021.e00662&partnerID=40&md5=ca06feb464b82ac16a464e64c5f73a63
http://eprints.utp.edu.my/29664/
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spelling my.utp.eprints.296642022-03-25T02:29:46Z Effect of the addition and processing of glass polishing waste on the durability of geopolymeric mortars de Azevedo, A.R.G. Marvila, M.T. Ali, M. Khan, M.I. Masood, F. Vieira, C.M.F. The waste from the flat glass polishing process for civil construction is generally discarded in landfills. Despite some researchers evaluating its application in the development of alternative building materials, its added value is still a barrier. The objective of this research is to evaluate the physical-mechanical behavior of the addition of glass polishing waste on the durability of geopolymeric mortars to be used for small external structural repairs and their processing methods. Cylindrical specimens (50 � 100 mm) were made with metakaolin (MK) and natural sand as precursors, whereas a mixture of NaOH in pearls + glass polishing waste, dissolved in water in two different orders (A: dry mixing of both activators and B: NaOH was dissolved in water and then the glass waste was added) was used as an alkaline solution, in addition to a reference mixture (without waste). The dosage used a SiO2/Al2O3 ratio = 2.5 and 3.0. The specimens were subjected to ambient and thermal curing (60 °C) for 7 days and then submitted to laboratory for measuring the durability of wetting and drying cycles, saline environment and thermal shock. It can be observed that in the evaluation of wetting and drying cycles, the type A mixture with a molar ratio of 3.0 in ambient cure obtained a weight loss of 10 , while in mechanical strength with a molar ratio of 2.5 and thermal cure the reduction was 27.34 . Meanwhile, in the durability to salt exposure, both processing conditions were satisfactory, with a molar ratio of 3.0, with type A and thermal cure with a loss of mass of 11.25 . In the evaluation of thermal shock, the mixture with the smallest loss of mechanical strength was the molar ratio of 2.5, type A with ambient cure. It can be concluded that forthe conditions evaluated, the mixture with a molar ratio of SiO2/Al2O3 = 2.5, using type A processing in the ambient cure, presented the smallest losses in mass and mechanical strength in comparative terms, adapting to the values of literature for mortars. © 2021 The Author(s) Elsevier Ltd 2021 Article NonPeerReviewed https://www.scopus.com/inward/record.uri?eid=2-s2.0-85113380085&doi=10.1016%2fj.cscm.2021.e00662&partnerID=40&md5=ca06feb464b82ac16a464e64c5f73a63 de Azevedo, A.R.G. and Marvila, M.T. and Ali, M. and Khan, M.I. and Masood, F. and Vieira, C.M.F. (2021) Effect of the addition and processing of glass polishing waste on the durability of geopolymeric mortars. Case Studies in Construction Materials, 15 . http://eprints.utp.edu.my/29664/
institution Universiti Teknologi Petronas
building UTP Resource Centre
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Petronas
content_source UTP Institutional Repository
url_provider http://eprints.utp.edu.my/
description The waste from the flat glass polishing process for civil construction is generally discarded in landfills. Despite some researchers evaluating its application in the development of alternative building materials, its added value is still a barrier. The objective of this research is to evaluate the physical-mechanical behavior of the addition of glass polishing waste on the durability of geopolymeric mortars to be used for small external structural repairs and their processing methods. Cylindrical specimens (50 � 100 mm) were made with metakaolin (MK) and natural sand as precursors, whereas a mixture of NaOH in pearls + glass polishing waste, dissolved in water in two different orders (A: dry mixing of both activators and B: NaOH was dissolved in water and then the glass waste was added) was used as an alkaline solution, in addition to a reference mixture (without waste). The dosage used a SiO2/Al2O3 ratio = 2.5 and 3.0. The specimens were subjected to ambient and thermal curing (60 °C) for 7 days and then submitted to laboratory for measuring the durability of wetting and drying cycles, saline environment and thermal shock. It can be observed that in the evaluation of wetting and drying cycles, the type A mixture with a molar ratio of 3.0 in ambient cure obtained a weight loss of 10 , while in mechanical strength with a molar ratio of 2.5 and thermal cure the reduction was 27.34 . Meanwhile, in the durability to salt exposure, both processing conditions were satisfactory, with a molar ratio of 3.0, with type A and thermal cure with a loss of mass of 11.25 . In the evaluation of thermal shock, the mixture with the smallest loss of mechanical strength was the molar ratio of 2.5, type A with ambient cure. It can be concluded that forthe conditions evaluated, the mixture with a molar ratio of SiO2/Al2O3 = 2.5, using type A processing in the ambient cure, presented the smallest losses in mass and mechanical strength in comparative terms, adapting to the values of literature for mortars. © 2021 The Author(s)
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author de Azevedo, A.R.G.
Marvila, M.T.
Ali, M.
Khan, M.I.
Masood, F.
Vieira, C.M.F.
spellingShingle de Azevedo, A.R.G.
Marvila, M.T.
Ali, M.
Khan, M.I.
Masood, F.
Vieira, C.M.F.
Effect of the addition and processing of glass polishing waste on the durability of geopolymeric mortars
author_facet de Azevedo, A.R.G.
Marvila, M.T.
Ali, M.
Khan, M.I.
Masood, F.
Vieira, C.M.F.
author_sort de Azevedo, A.R.G.
title Effect of the addition and processing of glass polishing waste on the durability of geopolymeric mortars
title_short Effect of the addition and processing of glass polishing waste on the durability of geopolymeric mortars
title_full Effect of the addition and processing of glass polishing waste on the durability of geopolymeric mortars
title_fullStr Effect of the addition and processing of glass polishing waste on the durability of geopolymeric mortars
title_full_unstemmed Effect of the addition and processing of glass polishing waste on the durability of geopolymeric mortars
title_sort effect of the addition and processing of glass polishing waste on the durability of geopolymeric mortars
publisher Elsevier Ltd
publishDate 2021
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-85113380085&doi=10.1016%2fj.cscm.2021.e00662&partnerID=40&md5=ca06feb464b82ac16a464e64c5f73a63
http://eprints.utp.edu.my/29664/
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score 13.209306