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ŠIMONOVÁ, H. DRAGAS, J. KUCHARCZYKOVÁ, B. KERŠNER, Z. IGNJATOVIC, I. KOMLJENOVIC, M. NIKOLIC, V.
Originální název
Fracture Behaviour of Geopolymer Mortars Reinforced with Hemp Fibres
Typ
článek ve sborníku ve WoS nebo Scopus
Jazyk
angličtina
Originální abstrakt
The main attention is focused on the evaluation of three-point bending fracture tests of prismatic specimens with an initial central edge notch made of selected fly ash based geopolymer mortars reinforced with hemp fibres. The design of selected mix composition was performed based on the preliminary research work which included the analysis of different fly ash types and quantities, as well as the different content of hemp fibres influence on the compressive and flexural strength. The load vs. displacement (deflection in the middle of span length) diagrams were recorded during the fracture tests and discussed. Mechanical fracture parameters were subsequently evaluated using the Effective Crack Model and Work-of-fracture method: modulus of elasticity, effective fracture toughness and specific fracture energy. The obtained results show that the fracture parameters increased with addition of hemp fibres up to 10% in case of effective fracture toughness and more than threefold in the case of specific fracture energy. It seems that the obtained results comply with the assumptions that the addition of fibres into alkali activated matrix should lead to reduce cracking tendency and improve tensile properties of these materials. On the other hand, it is necessary to perform more tests or determine other parameters to affirm these pilot results.
Klíčová slova
geopolymer mortar, fly ash, hemp fibres, fracture behaviour
Autoři
ŠIMONOVÁ, H.; DRAGAS, J.; KUCHARCZYKOVÁ, B.; KERŠNER, Z.; IGNJATOVIC, I.; KOMLJENOVIC, M.; NIKOLIC, V.
Vydáno
1. 10. 2019
Nakladatel
Fédération internationale du béton (fib)
Místo
Switzerland
ISBN
978-1-877040-15-3
Kniha
FIB 2018 - Proceedings for the 2018 fib Congress: Better, Smarter, Stronger
ISSN
2617-4820
Periodikum
International fib Congress on Better, Smarter, Stronger, 2018
Stát
Australské společenství
Strany od
3627
Strany do
3637
Strany počet
11
BibTex
@inproceedings{BUT159038, author="Hana {Šimonová} and Jelena {Dragas} and Barbara {Kucharczyková} and Zbyněk {Keršner} and Ivan {Ignjatovic} and Miroslav {Komljenovic} and Violeta {Nikolic}", title="Fracture Behaviour of Geopolymer Mortars Reinforced with Hemp Fibres", booktitle="FIB 2018 - Proceedings for the 2018 fib Congress: Better, Smarter, Stronger", year="2019", journal="International fib Congress on Better, Smarter, Stronger, 2018", pages="3627--3637", publisher="Fédération internationale du béton (fib)", address="Switzerland", isbn="978-1-877040-15-3", issn="2617-4820" }