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Strain hardening behaviour of PE fibre reinforced calcium aluminate cement (CAC) - ground granulated blast furnace (GGBFS) blended mortar

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dc.contributor.authorFan, W.
dc.contributor.authorZhuge, Y.
dc.contributor.authorMa, X.
dc.contributor.authorChow, C.W.K.
dc.contributor.authorGorjian, N.
dc.date.issued2020
dc.description.abstractCalcium aluminate cement (CAC) is regarded as an effective protective coating material for concrete sewerage pipes to prevent bacterial induced acid corrosion. However, the conversion process occurred in pure CAC mortar limited its application for structural purpose. Ground granulated blast furnace slag (GGBFS) blended with CAC can change the hydration mechanism and stop the conversion process. To better utilise CAC-GGBFS blended mortar for retrofitting concrete sewerage pipes, the inherent brittleness needs to be addressed. Introduction of polyethylene (PE) fibres into CAC-GGBFS blended mortar can help to form multiple tiny cracks under tensile loading for better crack control, give it high potential for the use in concrete structure retrofitting. In this paper, the authors took a first attempt on developing anew type of PE fibre reinforced CAC-GGBFS mortar with strain hardening behaviour. The new composite reached a compressive and flexural strength of 59.76 MPa and 22.12 MPa, respectively. The tensile strength was 5.46 MPa with the corresponding strain of 4.78%. Multiple cracks behaviour was observed under tensile and flexural loads. Classic pseudo strain hardening (PSH) criterion was validated on the new composite.
dc.identifier.citationConstruction and Building Materials, 2020; 241(118100):1-15
dc.identifier.doi10.1016/j.conbuildmat.2020.118100
dc.identifier.issn0950-0618
dc.identifier.issn1879-0526
dc.identifier.orcidZhuge, Y. [0000-0003-1620-6743]
dc.identifier.urihttps://hdl.handle.net/11541.2/141304
dc.language.isoen
dc.publisherElsevier
dc.relation.fundingUniversity of South Australia Postgraduate Research Award
dc.relation.fundingUniversity of South Australia Research Training Program
dc.rightsCopyright 2020 Elsevier
dc.source.urihttps://doi.org/10.1016/j.conbuildmat.2020.118100
dc.subjectstrain hardening
dc.subjectcalcium aluminate cement
dc.subjectground granulated blast furnace slag
dc.subjectmechanical property
dc.subjectpolyethylene (PE) fibre
dc.titleStrain hardening behaviour of PE fibre reinforced calcium aluminate cement (CAC) - ground granulated blast furnace (GGBFS) blended mortar
dc.typeJournal article
pubs.publication-statusPublished
ror.mmsid9916375369101831

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