TY  - JOUR
AU  - Ildiko, Merta
AU  - Poletanović, Bojan
AU  - Dragaš, Jelena
AU  - Carević, Vedran
AU  - Ignjatović, Ivan
AU  - Komljenović, Miroslav
PY  - 2022
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2663
AB  - 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.
PB  - MDPI
T2  - Polymers
T1  - The Influence of Accelerated Carbonation on Physical and Mechanical Properties of Hemp-Fibre-Reinforced Alkali-Activated Fly Ash and Fly Ash/Slag Mortars
SP  - 1799
VL  - 14
DO  - 10.3390/polym14091799
ER  - 

@article{
author = "Ildiko, Merta and Poletanović, Bojan and Dragaš, Jelena and Carević, Vedran and Ignjatović, Ivan and Komljenović, Miroslav",
year = "2022",
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.",
publisher = "MDPI",
journal = "Polymers",
title = "The Influence of Accelerated Carbonation on Physical and Mechanical Properties of Hemp-Fibre-Reinforced Alkali-Activated Fly Ash and Fly Ash/Slag Mortars",
pages = "1799",
volume = "14",
doi = "10.3390/polym14091799"
}

Ildiko, M., Poletanović, B., Dragaš, J., Carević, V., Ignjatović, I.,& Komljenović, M.. (2022). The Influence of Accelerated Carbonation on Physical and Mechanical Properties of Hemp-Fibre-Reinforced Alkali-Activated Fly Ash and Fly Ash/Slag Mortars. in Polymers
MDPI., 14, 1799.
https://doi.org/10.3390/polym14091799

Ildiko M, Poletanović B, Dragaš J, Carević V, Ignjatović I, Komljenović M. The Influence of Accelerated Carbonation on Physical and Mechanical Properties of Hemp-Fibre-Reinforced Alkali-Activated Fly Ash and Fly Ash/Slag Mortars. in Polymers. 2022;14:1799.
doi:10.3390/polym14091799 .

Ildiko, Merta, Poletanović, Bojan, Dragaš, Jelena, Carević, Vedran, Ignjatović, Ivan, Komljenović, Miroslav, "The Influence of Accelerated Carbonation on Physical and Mechanical Properties of Hemp-Fibre-Reinforced Alkali-Activated Fly Ash and Fly Ash/Slag Mortars" in Polymers, 14 (2022):1799,
https://doi.org/10.3390/polym14091799 . .

TY  - JOUR
AU  - Poletanović, Bojan
AU  - Dragaš, Jelena
AU  - Ignjatović, Ivan
AU  - Komljenović, Miroslav
AU  - Merta, Ildiko
PY  - 2020
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/2172
AB  - Two alkali-activated mortars with different solid prime materials were analysed. The first mortar contained fly ash, had lower density, higher water absorption, lower compactness, lower compressive strength, similar flexural strength and was less brittle than the second one with fly ash + slag.
The addition of hemp fibres slightly changed the mortars’ density, water absorption, compressive and flexural strength, however significantly increased its energy absorption capacity.
The initially more brittle matrix exhibited significantly higher relative toughness increase. The smoother and less porous fibre/matrix interface assured through numerous fibre/matrix contact points a more optimal fibre/matrix interfacial bond- and frictional stress transfer.
PB  - Elsevier Ltd.
T2  - Construction and Building Materials
T1  - Physical and mechanical properties of hemp fibre reinforced alkali-activated fly ash and fly ash/slag mortars
SP  - 119677
VL  - 259
DO  - 10.1016/j.conbuildmat.2020.119677
ER  - 

@article{
author = "Poletanović, Bojan and Dragaš, Jelena and Ignjatović, Ivan and Komljenović, Miroslav and Merta, Ildiko",
year = "2020",
abstract = "Two alkali-activated mortars with different solid prime materials were analysed. The first mortar contained fly ash, had lower density, higher water absorption, lower compactness, lower compressive strength, similar flexural strength and was less brittle than the second one with fly ash + slag.
The addition of hemp fibres slightly changed the mortars’ density, water absorption, compressive and flexural strength, however significantly increased its energy absorption capacity.
The initially more brittle matrix exhibited significantly higher relative toughness increase. The smoother and less porous fibre/matrix interface assured through numerous fibre/matrix contact points a more optimal fibre/matrix interfacial bond- and frictional stress transfer.",
publisher = "Elsevier Ltd.",
journal = "Construction and Building Materials",
title = "Physical and mechanical properties of hemp fibre reinforced alkali-activated fly ash and fly ash/slag mortars",
pages = "119677",
volume = "259",
doi = "10.1016/j.conbuildmat.2020.119677"
}

Poletanović, B., Dragaš, J., Ignjatović, I., Komljenović, M.,& Merta, I.. (2020). Physical and mechanical properties of hemp fibre reinforced alkali-activated fly ash and fly ash/slag mortars. in Construction and Building Materials
Elsevier Ltd.., 259, 119677.
https://doi.org/10.1016/j.conbuildmat.2020.119677

Poletanović B, Dragaš J, Ignjatović I, Komljenović M, Merta I. Physical and mechanical properties of hemp fibre reinforced alkali-activated fly ash and fly ash/slag mortars. in Construction and Building Materials. 2020;259:119677.
doi:10.1016/j.conbuildmat.2020.119677 .

Poletanović, Bojan, Dragaš, Jelena, Ignjatović, Ivan, Komljenović, Miroslav, Merta, Ildiko, "Physical and mechanical properties of hemp fibre reinforced alkali-activated fly ash and fly ash/slag mortars" in Construction and Building Materials, 259 (2020):119677,
https://doi.org/10.1016/j.conbuildmat.2020.119677 . .