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Physical and mechanical properties of hemp fibre reinforced alkali-activated fly ash and fly ash/slag mortars

Authorized Users Only
2020
Authors
Poletanović, Bojan
Dragas, Jelena
Ignjatović, Ivan
Komljenović, Miroslav M
Merta, Ildiko
Article (Published version)
Metadata
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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 material
Source:
Construction and Building Materials, 2020, 259
Publisher:
  • 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-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-36017)
  • MULT_DR 08/2017

DOI: 10.1016/j.conbuildmat.2020.119677

ISSN: 0950-0618

WoS: 000573927400003

Scopus: 2-s2.0-85086584814
[ Google Scholar ]
30
10
URI
http://rimsi.imsi.bg.ac.rs/handle/123456789/1323
Collections
  • Radovi istraživača / Researchers’ publications
Institution/Community
Institut za multidisciplinarna istraživanja
TY  - 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 . .

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