<div class="csl-bib-body">
<div class="csl-entry">Duan, W., Zhuge, Y., Chow, C. W. K., Keegan, A., Liu, Y., & Merta, I. (2023). Mitigation of alkali-silica reaction in blast-furnace slag-based alkaline activated material through incorporation of alum water treatment residue. <i>Construction and Building Materials</i>, <i>406</i>, Article 133383. https://doi.org/10.1016/j.conbuildmat.2023.133383</div>
</div>
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dc.identifier.issn
0950-0618
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dc.identifier.uri
http://hdl.handle.net/20.500.12708/188512
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dc.description.abstract
Alkaline-activated materials (AAMs) have been developed as an alternative binder for cement in an effort to reduce the carbon footprint. However, due to the high alkaline contents in AAMs, these materials, particularly ground granulated blast-furnace slag (GGBS)-based AAM, may have a high potential of detrimental alkali-silica reaction (ASR) when amorphous silica-rich aggregates are used. This study utilised alum water treatment residue (AWTR), a waste from drinking water treatment, as an additional precursor in slag-based AAM to mitigate ASR in mortars with high reactive glass aggregate. The results showed that incorporating 40% AWTR in the precursor improved the compressive strength from 47 to 64 MPa and reduced ASR-induced expansion from 0.9% to 0.2% after 28 days of the accelerated test. The characteristics of the ASR gels were analysed using backscattered electron images coupled with energy-dispersive x-ray spectroscopy. Microscopic observations revealed that the ASR products formed in two stages. In the earlier stage, amorphous ASR gels precipitated surrounding the aggregates, exerting pressure on them and the matrix, resulting in initial cracking. In the latter stage, ASR products extruded into the open cracks, and crystalline products were formed, causing additional damage to the matrix. The quantitative elemental analysis demonstrated that incorporating AWTR could slow down silica dissolution by forming an Al layer in the aggregate surface, prevent the ASR gel calcification and reduce the growth of the harmful crystalline ASR products.
en
dc.language.iso
en
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dc.publisher
ELSEVIER SCI LTD
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dc.relation.ispartof
Construction and Building Materials
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dc.subject
Waste re-utilisation
en
dc.subject
Alum water treatment residues
en
dc.subject
Blast-furnace slag
en
dc.subject
Alkaline activated materials
en
dc.subject
Microstructural analysis
en
dc.title
Mitigation of alkali-silica reaction in blast-furnace slag-based alkaline activated material through incorporation of alum water treatment residue
en
dc.type
Article
en
dc.type
Artikel
de
dc.contributor.affiliation
University of South Australia, Australia
-
dc.contributor.affiliation
University of South Australia, Australia
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dc.contributor.affiliation
University of South Australia, Australia
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dc.contributor.affiliation
University of South Australia, Australia
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dc.contributor.affiliation
University of South Australia, Australia
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dc.type.category
Original Research Article
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tuw.container.volume
406
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tuw.journal.peerreviewed
true
-
tuw.peerreviewed
true
-
wb.publication.intCoWork
International Co-publication
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tuw.researchTopic.id
M7
-
tuw.researchTopic.id
M2
-
tuw.researchTopic.id
M5
-
tuw.researchTopic.name
Special and Engineering Materials
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tuw.researchTopic.name
Materials Characterization
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tuw.researchTopic.name
Composite Materials
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tuw.researchTopic.value
25
-
tuw.researchTopic.value
25
-
tuw.researchTopic.value
50
-
dcterms.isPartOf.title
Construction and Building Materials
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tuw.publication.orgunit
E207-02 - Forschungsbereich Bauphysik
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tuw.publisher.doi
10.1016/j.conbuildmat.2023.133383
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dc.identifier.articleid
133383
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dc.identifier.eissn
1879-0526
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tuw.author.orcid
0000-0002-0751-4480
-
wb.sci
true
-
wb.sciencebranch
Bauingenieurwesen
-
wb.sciencebranch
Umwelttechnik
-
wb.sciencebranch
Werkstofftechnik
-
wb.sciencebranch.oefos
2011
-
wb.sciencebranch.oefos
2071
-
wb.sciencebranch.oefos
2050
-
wb.sciencebranch.value
50
-
wb.sciencebranch.value
25
-
wb.sciencebranch.value
25
-
item.openairecristype
http://purl.org/coar/resource_type/c_18cf
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item.openairecristype
http://purl.org/coar/resource_type/c_18cf
-
item.grantfulltext
none
-
item.languageiso639-1
en
-
item.fulltext
no Fulltext
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item.openairetype
Article
-
item.openairetype
Artikel
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item.cerifentitytype
Publications
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item.cerifentitytype
Publications
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crisitem.author.dept
University of South Australia, Australia
-
crisitem.author.dept
University of South Australia, Australia
-
crisitem.author.dept
University of South Australia, Australia
-
crisitem.author.dept
University of South Australia, Australia
-
crisitem.author.dept
University of South Australia, Australia
-
crisitem.author.dept
E207-02 - Forschungsbereich Bauphysik
-
crisitem.author.orcid
0000-0002-0751-4480
-
crisitem.author.parentorg
E207 - Institut für Werkstofftechnologie, Bauphysik und Bauökologie