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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 | Merta, Ildiko | |
dc.creator | Poletanovic, Bojan | |
dc.creator | Dragas, Jelena | |
dc.creator | Carevic, Vedran | |
dc.creator | Ignjatovic, Ivan | |
dc.creator | Komljenović, Miroslav M | |
dc.date.accessioned | 2022-08-29T10:12:08Z | |
dc.date.available | 2022-08-29T10:12:08Z | |
dc.date.issued | 2022 | |
dc.identifier.issn | 2073-4360 | |
dc.identifier.uri | http://rimsi.imsi.bg.ac.rs/handle/123456789/1564 | |
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/GBFSbased 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/Technological Development (TD or TR)/34026/RS// | sr |
dc.relation | info:eu-repo/grantAgreement/MESTD/Technological Development (TD or TR)/36017/RS// | sr |
dc.relation | the financial support for mobility provided by the Federal Ministry of Science, Research and Economy (BMWFW) in Austria | sr |
dc.rights | openAccess | sr |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | |
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 | BY | sr |
dc.citation.volume | 14 | |
dc.identifier.doi | 10.3390/polym14091799 | |
dc.identifier.fulltext | http://rimsi.imsi.bg.ac.rs/bitstream/id/3784/polymers-14-01799.pdf | |
dc.type.version | publishedVersion | sr |