Physical and mechanical properties of hemp fibre reinforced alkali-activated fly ash and fly ash/slag mortars
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.
Keywords:
Three-point bending test / Slag / Physical properties / Natural fibre / Mortar / Mechanical properties / Hemp / Fly ash / Energy absorption capacity / Alkali-activated materialSource:
Construction and Building Materials, 2020, 259Publisher:
- Elsevier Sci Ltd, Oxford
Funding / projects:
- Federal Ministry of Science, Research and Economy (BMWFW) in Austria
- Ministry of Education, Youth and Sports of the Czech RepublicMinistry of Education, Youth & Sports - Czech Republic
- Geopolymers - technology for converting the industrial waste into functional materials (RS-MESTD-Technological Development (TD or TR)-34026)
- 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)
- MULT_DR 08/2017
DOI: 10.1016/j.conbuildmat.2020.119677
ISSN: 0950-0618
WoS: 000573927400003
Scopus: 2-s2.0-85086584814
Collections
Institution/Community
Institut za multidisciplinarna istraživanjaTY - JOUR AU - Poletanović, Bojan AU - Dragas, Jelena AU - Ignjatović, Ivan AU - Komljenović, Miroslav M AU - Merta, Ildiko PY - 2020 UR - http://rimsi.imsi.bg.ac.rs/handle/123456789/1323 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 Sci Ltd, Oxford T2 - Construction and Building Materials T1 - Physical and mechanical properties of hemp fibre reinforced alkali-activated fly ash and fly ash/slag mortars VL - 259 DO - 10.1016/j.conbuildmat.2020.119677 ER -
@article{ author = "Poletanović, Bojan and Dragas, Jelena and Ignjatović, Ivan and Komljenović, Miroslav M 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 Sci Ltd, Oxford", journal = "Construction and Building Materials", title = "Physical and mechanical properties of hemp fibre reinforced alkali-activated fly ash and fly ash/slag mortars", volume = "259", doi = "10.1016/j.conbuildmat.2020.119677" }
Poletanović, B., Dragas, J., Ignjatović, I., Komljenović, M. 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 Sci Ltd, Oxford., 259. https://doi.org/10.1016/j.conbuildmat.2020.119677
Poletanović B, Dragas J, Ignjatović I, Komljenović MM, 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. doi:10.1016/j.conbuildmat.2020.119677 .
Poletanović, Bojan, Dragas, Jelena, Ignjatović, Ivan, Komljenović, Miroslav M, 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), https://doi.org/10.1016/j.conbuildmat.2020.119677 . .