RIMSI - Repository of Institute for Multidisciplinary Research
University of Belgrade - Institute for Multidisciplinary Research
    • English
    • Српски
    • Српски (Serbia)
  • English 
    • English
    • Serbian (Cyrillic)
    • Serbian (Latin)
  • Login
View Item 
  •   RIMSI
  • Institut za multidisciplinarna istraživanja
  • Radovi istraživača / Researchers’ publications
  • View Item
  •   RIMSI
  • Institut za multidisciplinarna istraživanja
  • Radovi istraživača / Researchers’ publications
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

The Influence of Accelerated Carbonation on Physical and Mechanical Properties of Hemp-Fibre-Reinforced Alkali-Activated Fly Ash and Fly Ash/Slag Mortars

Thumbnail
2022
polymers-14-01799.pdf (3.726Mb)
Authors
Merta, Ildiko
Poletanovic, Bojan
Dragas, Jelena
Carevic, Vedran
Ignjatovic, Ivan
Komljenović, Miroslav M
Article (Published version)
Metadata
Show full item record
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 an...d 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/GBFSbased 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.

Keywords:
accelerated carbonation / alkali-activated mortar / hemp fibres / natural fibres / fly ash / granulated blast furnace slag / physical properties / mechanical properties / energy absorption capacity
Source:
Polymers, 2022, 14
Publisher:
  • MDPI
Funding / projects:
  • 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)
  • the financial support for mobility provided by the Federal Ministry of Science, Research and Economy (BMWFW) in Austria

DOI: 10.3390/polym14091799

ISSN: 2073-4360

[ Google Scholar ]
URI
http://rimsi.imsi.bg.ac.rs/handle/123456789/1564
Collections
  • Radovi istraživača / Researchers’ publications
Institution/Community
Institut za multidisciplinarna istraživanja
TY  - JOUR
AU  - Merta, Ildiko
AU  - Poletanovic, Bojan
AU  - Dragas, Jelena
AU  - Carevic, Vedran
AU  - Ignjatovic, Ivan
AU  - Komljenović, Miroslav M
PY  - 2022
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1564
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/GBFSbased
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
VL  - 14
DO  - 10.3390/polym14091799
ER  - 
@article{
author = "Merta, Ildiko and Poletanovic, Bojan and Dragas, Jelena and Carevic, Vedran and Ignjatovic, Ivan and Komljenović, Miroslav M",
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/GBFSbased
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",
volume = "14",
doi = "10.3390/polym14091799"
}
Merta, I., Poletanovic, B., Dragas, J., Carevic, V., Ignjatovic, I.,& Komljenović, M. 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.
https://doi.org/10.3390/polym14091799
Merta I, Poletanovic B, Dragas J, Carevic V, Ignjatovic I, Komljenović MM. 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.
doi:10.3390/polym14091799 .
Merta, Ildiko, Poletanovic, Bojan, Dragas, Jelena, Carevic, Vedran, Ignjatovic, Ivan, Komljenović, Miroslav 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, 14 (2022),
https://doi.org/10.3390/polym14091799 . .

DSpace software copyright © 2002-2015  DuraSpace
About RIMSI | Send Feedback

OpenAIRERCUB
 

 

All of DSpaceCommunitiesAuthorsTitlesSubjectsThis institutionAuthorsTitlesSubjects

Statistics

View Usage Statistics

DSpace software copyright © 2002-2015  DuraSpace
About RIMSI | Send Feedback

OpenAIRERCUB