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The Influence of Accelerated Carbonation on Physical and Mechanical Properties of Hemp-Fibre-Reinforced Alkali-Activated Fly Ash and Fly Ash/Slag Mortars
dc.creator | Ildiko, Merta | |
dc.creator | Poletanović, Bojan | |
dc.creator | Dragaš, Jelena | |
dc.creator | Carević, Vedran | |
dc.creator | Ignjatović, Ivan | |
dc.creator | Komljenović, Miroslav | |
dc.date.accessioned | 2022-04-29T07:41:56Z | |
dc.date.available | 2022-04-29T07:41:56Z | |
dc.date.issued | 2022 | |
dc.identifier.issn | 2073-4360 | |
dc.identifier.uri | https://grafar.grf.bg.ac.rs/handle/123456789/2663 | |
dc.description.abstract | The physical and mechanical properties of hemp-fibre-reinforced alkali-activated (AA) mortars under accelerated carbonation were evaluated. Two matrices of different physical and chemical properties, i.e., a low Ca-containing and less dense one with fly ash (FA) and a high Ca-containing and denser one with FA and granulated blast furnace slag (GBFS), were reinforced with fibres (10 mm, 0.5 vol% and 1.0 vol%). Under accelerated carbonation, due to the pore refinement resulting from alkali and alkaline earth salt precipitation, AA hemp fibre mortars markedly (20%) decreased their water absorption. FA-based hemp mortars increased significantly their compressive and flexural strength (40% and 34%, respectively), whereas in the denser FA/GBFS matrix (due to the hindered CO2 penetration, i.e., lower chemical reaction between CO2 and pore solution and gel products), only a slight variation (±10%) occurred. Under accelerated carbonation, embrittlement of the fibre/matrix interface and of the whole composite occurred, accompanied by increased stiffness, decreased deformation capacity and loss of the energy absorption capacity under flexure. FA-based matrices exhibited more pronounced embrittlement than the denser FA/GBFS matrices. A combination of FA/GBFS-based mortar reinforced with 0.5 vol% fibre dosage ensured an optimal fibre/matrix interface and stress transfer, mitigating the embrittlement of the material under accelerated carbonation. | sr |
dc.language.iso | en | sr |
dc.publisher | MDPI | sr |
dc.relation | info:eu-repo/grantAgreement/MESTD/inst-2020/200092/RS// | sr |
dc.rights | restrictedAccess | sr |
dc.source | Polymers | sr |
dc.subject | accelerated carbonation | sr |
dc.subject | alkali-activated mortar | sr |
dc.subject | hemp fibres | sr |
dc.subject | natural fibres | sr |
dc.subject | fly ash | sr |
dc.subject | granulated blast furnace slag | sr |
dc.subject | physical properties | sr |
dc.subject | mechanical properties | sr |
dc.subject | energy absorption capacity | sr |
dc.title | The Influence of Accelerated Carbonation on Physical and Mechanical Properties of Hemp-Fibre-Reinforced Alkali-Activated Fly Ash and Fly Ash/Slag Mortars | sr |
dc.type | article | sr |
dc.rights.license | ARR | sr |
dc.rights.holder | mdpi | sr |
dc.citation.rank | M21~ | |
dc.citation.spage | 1799 | |
dc.citation.volume | 14 | |
dc.identifier.doi | 10.3390/polym14091799 | |
dc.type.version | publishedVersion | sr |