Experimental study of multiscale hybrid fiber-reinforced ambient-cured LEGC under uniaxial compression

Wei, J; Yang, Q; Yu, Y; Jiang, Q; Li, X; Liu, S; Li, K; Wang, Q

Experimental study of multiscale hybrid fiber-reinforced ambient-cured LEGC under uniaxial compression

Wei, J Yang, Q Yu, Y

Jiang, Q Li, X Liu, S Li, K Wang, Q

Permalink

Publisher:: ELSEVIER SCI LTD
Publication Type:: Journal Article
Citation:: Construction and Building Materials, 2024, 411
Issue Date:: 2024-01-12

Closed Access

	Filename	Description	Size
	1-s2.0-S0950061823041041-main.pdf	Published version	11.73 MB		View/Open

Copyright Clearance Process

Recently Added
In Progress
Closed Access

This item is closed access and not available.

Full metadata record

Field	Value	Language
dc.contributor.author	Wei, J
dc.contributor.author	Yang, Q
dc.contributor.author	Yu, Y https://orcid.org/0000-0001-9592-8191
dc.contributor.author	Jiang, Q
dc.contributor.author	Li, X
dc.contributor.author	Liu, S
dc.contributor.author	Li, K
dc.contributor.author	Wang, Q
dc.date.accessioned	2025-01-12T23:26:24Z
dc.date.available	2025-01-12T23:26:24Z
dc.date.issued	2024-01-12
dc.identifier.citation	Construction and Building Materials, 2024, 411
dc.identifier.issn	0950-0618
dc.identifier.issn	1879-0526
dc.identifier.uri	http://hdl.handle.net/10453/183280
dc.description.abstract	This study proposed the addition of cellulose nanofibers (CNFs) and basalt fibers (BFs) as hybrid fibers (HFs) into lightweight expanded polystyrene (EPS) geopolymer concrete (LEGC) to enhance its mechanical properties from chemical and physical perspectives. First, uniaxial compression tests were performed on LEGC specimens with moderate densities (1120–1920 kg/m3) reinforced with HF prepared with different CNF weight ratios (0.1%, 0.2%, and 0.3%) and fixed BF volume content of 0.6%. The test results demonstrated that the integrity of the specimens under the effect of the suitable dosing of HF was better maintained at final destruction, and the enhancement rates of the compressive strength and elastic modulus of the specimens with HF were superior to those with a single fiber type. The suitable dose of CNF was 0.2% for EPS volume contents of 10% and 20%, while 0.1% was suitable for EPS volume contents of 30% and 40%. Meanwhile, the cracking resistance mechanism of HF specimens was analyzed from chemical and physical perspectives, and the synergistic mechanism was determined quantitatively. In addition, the enhancement rates of the energy absorption capacity of the specimens with a suitable dose of HF were also more effective, which ensured the light weight of the material and improved its energy absorption capacity. Finally, this study developed a nine-parameter damage constitutive model that could better describe the five-stage characteristics of the complete stress[sbnd]strain curve of the specimens, providing a certain theoretical basis for the structural design and analysis of LEGCs.
dc.language	English
dc.publisher	ELSEVIER SCI LTD
dc.relation.ispartof	Construction and Building Materials
dc.relation.isbasedon	10.1016/j.conbuildmat.2023.134386
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0905 Civil Engineering, 1202 Building
dc.subject.classification	Building & Construction
dc.subject.classification	3302 Building
dc.subject.classification	4005 Civil engineering
dc.subject.classification	4016 Materials engineering
dc.title	Experimental study of multiscale hybrid fiber-reinforced ambient-cured LEGC under uniaxial compression
dc.type	Journal Article
utslib.citation.volume	411
utslib.for	0905 Civil Engineering
utslib.for	1202 Building
pubs.organisational-group	University of Technology Sydney
pubs.organisational-group	University of Technology Sydney/Faculty of Engineering and Information Technology
utslib.copyright.status	closed_access	*
dc.date.updated	2025-01-12T23:26:20Z
pubs.publication-status	Published
pubs.volume	411

Abstract:

This study proposed the addition of cellulose nanofibers (CNFs) and basalt fibers (BFs) as hybrid fibers (HFs) into lightweight expanded polystyrene (EPS) geopolymer concrete (LEGC) to enhance its mechanical properties from chemical and physical perspectives. First, uniaxial compression tests were performed on LEGC specimens with moderate densities (1120–1920 kg/m3) reinforced with HF prepared with different CNF weight ratios (0.1%, 0.2%, and 0.3%) and fixed BF volume content of 0.6%. The test results demonstrated that the integrity of the specimens under the effect of the suitable dosing of HF was better maintained at final destruction, and the enhancement rates of the compressive strength and elastic modulus of the specimens with HF were superior to those with a single fiber type. The suitable dose of CNF was 0.2% for EPS volume contents of 10% and 20%, while 0.1% was suitable for EPS volume contents of 30% and 40%. Meanwhile, the cracking resistance mechanism of HF specimens was analyzed from chemical and physical perspectives, and the synergistic mechanism was determined quantitatively. In addition, the enhancement rates of the energy absorption capacity of the specimens with a suitable dose of HF were also more effective, which ensured the light weight of the material and improved its energy absorption capacity. Finally, this study developed a nine-parameter damage constitutive model that could better describe the five-stage characteristics of the complete stress[sbnd]strain curve of the specimens, providing a certain theoretical basis for the structural design and analysis of LEGCs.

Please use this identifier to cite or link to this item:

http://hdl.handle.net/10453/183280