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Article: Development of extrudable high strength fiber reinforced concrete incorporating nano calcium carbonate

TitleDevelopment of extrudable high strength fiber reinforced concrete incorporating nano calcium carbonate
Authors
KeywordsExtrudable concrete
Fibers
Nanoparticles
Strength
Fiber reinforced concrete (FRC)
Issue Date2021
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/issn/22148604
Citation
Additive Manufacturing, 2021, v. 37, p. article no. 101617 How to Cite?
AbstractThe use of extrudable (3D printable) concrete in construction has attracted increasing attention, whilst the major obstacles to its wider application lie in the difficulties in materials design, particularly when fibers are added as an alternative to reinforcement. In this study, high strength fiber reinforced concrete (HSFRC) mixtures for extrusion were developed, and the influences of nanoparticles and carbon, steel and glass fibers on their extrudability, buildability and strength properties were investigated. It was found that the addition of nanoparticles and fibers would enhance the rheological properties for shape retention. It was also found that the addition of steel fibers would be more effective in improving the strength but less effective in improving the interlayer bond compared to the addition of carbon or glass fibers, whereas a suitable amount of nanoparticles would generally favor the strength and interlayer bond. Lastly, a conceptual model for the design of extrudable concrete mixtures and some explanations from the perspective of thixotropy were presented. This study shall advance the development of extrudable HSFRC.
Persistent Identifierhttp://hdl.handle.net/10722/308069
ISSN
2020 Impact Factor: 10.998
2020 SCImago Journal Rankings: 2.710
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorChu, SH-
dc.contributor.authorLi, LG-
dc.contributor.authorKwan, AKH-
dc.date.accessioned2021-11-12T13:42:04Z-
dc.date.available2021-11-12T13:42:04Z-
dc.date.issued2021-
dc.identifier.citationAdditive Manufacturing, 2021, v. 37, p. article no. 101617-
dc.identifier.issn2214-8604-
dc.identifier.urihttp://hdl.handle.net/10722/308069-
dc.description.abstractThe use of extrudable (3D printable) concrete in construction has attracted increasing attention, whilst the major obstacles to its wider application lie in the difficulties in materials design, particularly when fibers are added as an alternative to reinforcement. In this study, high strength fiber reinforced concrete (HSFRC) mixtures for extrusion were developed, and the influences of nanoparticles and carbon, steel and glass fibers on their extrudability, buildability and strength properties were investigated. It was found that the addition of nanoparticles and fibers would enhance the rheological properties for shape retention. It was also found that the addition of steel fibers would be more effective in improving the strength but less effective in improving the interlayer bond compared to the addition of carbon or glass fibers, whereas a suitable amount of nanoparticles would generally favor the strength and interlayer bond. Lastly, a conceptual model for the design of extrudable concrete mixtures and some explanations from the perspective of thixotropy were presented. This study shall advance the development of extrudable HSFRC.-
dc.languageeng-
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/issn/22148604-
dc.relation.ispartofAdditive Manufacturing-
dc.subjectExtrudable concrete-
dc.subjectFibers-
dc.subjectNanoparticles-
dc.subjectStrength-
dc.subjectFiber reinforced concrete (FRC)-
dc.titleDevelopment of extrudable high strength fiber reinforced concrete incorporating nano calcium carbonate-
dc.typeArticle-
dc.identifier.emailKwan, AKH: khkwan@hkucc.hku.hk-
dc.identifier.authorityKwan, AKH=rp00127-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.addma.2020.101617-
dc.identifier.scopuseid_2-s2.0-85092180801-
dc.identifier.hkuros329681-
dc.identifier.volume37-
dc.identifier.spagearticle no. 101617-
dc.identifier.epagearticle no. 101617-
dc.identifier.isiWOS:000609203100013-
dc.publisher.placeNetherlands-

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