Physical and mechanical properties of hemp fibre reinforced alkali-activated fly ash and fly ash/slag mortars
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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.
Keywords:
Alkali-activated material / Mortar / Fly ash / Slag / Natural fibre / Hemp / Mechanical properties / Physical properties / Energy absorption capacity / Three-point bending testSource:
Construction and Building Materials, 2020, 259, 119677-Publisher:
- Elsevier Ltd.
Funding / projects:
- Utilization of by-products and recycled waste materials in concrete composites in the scope of sustainable construction development in Serbia: investigation and environmental assessment of possible applications (RS-MESTD-Technological Development (TD or TR)-36017)
DOI: 10.1016/j.conbuildmat.2020.119677
ISSN: 0950-0618
WoS: 000573927400003
Scopus: 2-s2.0-85086584814
Institution/Community
GraFarTY - 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 . .