Detail publikace

Stability of Basalt-fibres reinforcement in Alkali-activated systems

Originální název

Stability of Basalt-fibres reinforcement in Alkali-activated systems

Anglický název

Stability of Basalt-fibres reinforcement in Alkali-activated systems

Jazyk

en

Originální abstrakt

Basalt fibres (BFs) represent suitable reinforcing materials for cementitious materials because of their mechanical and thermal properties as well as good price-performance ratio. The crucial issue limiting the possibility of using these fibres in alkali-activated systems (AASs) is their stability and durability in a highly alkaline environment. There is a significant inconsistency across the publications in this case. Hence, the verification of the BFs stability in an environment simulating the AAS is fundamental for a successful implementation as a reinforcement in the matrix. Accelerated leaching tests in water-glass/NaOH and water-glass/Na2CO3 solutions with the evaluation of loss of mass, loss of tensile strength as well as chemical composition changes of the fibres and leaching solutions were made using various techniques, such as XPS, SEM or ICP-OES. A noticeable loss of mass as well as a deterioration of the tensile properties accompanied by a simultaneous dissolution of the fibres was observed. Additionally, the transition-zone properties were studied using a SEM-EDX in this study. Poor or no adhesion between the BFs and the AAS matrix was found

Anglický abstrakt

Basalt fibres (BFs) represent suitable reinforcing materials for cementitious materials because of their mechanical and thermal properties as well as good price-performance ratio. The crucial issue limiting the possibility of using these fibres in alkali-activated systems (AASs) is their stability and durability in a highly alkaline environment. There is a significant inconsistency across the publications in this case. Hence, the verification of the BFs stability in an environment simulating the AAS is fundamental for a successful implementation as a reinforcement in the matrix. Accelerated leaching tests in water-glass/NaOH and water-glass/Na2CO3 solutions with the evaluation of loss of mass, loss of tensile strength as well as chemical composition changes of the fibres and leaching solutions were made using various techniques, such as XPS, SEM or ICP-OES. A noticeable loss of mass as well as a deterioration of the tensile properties accompanied by a simultaneous dissolution of the fibres was observed. Additionally, the transition-zone properties were studied using a SEM-EDX in this study. Poor or no adhesion between the BFs and the AAS matrix was found

BibTex


@article{BUT163764,
  author="Petr {Hrubý} and Lukáš {Kalina} and Jiří {Másilko} and Jaromír {Pořízka} and František {Šoukal} and Vlastimír {Nevrlý}",
  title="Stability of Basalt-fibres reinforcement in Alkali-activated systems",
  annote="Basalt fibres (BFs) represent suitable reinforcing materials for cementitious materials because of their mechanical and thermal
properties as well as good price-performance ratio. The crucial issue limiting the possibility of using these fibres in
alkali-activated systems (AASs) is their stability and durability in a highly alkaline environment. There is a significant
inconsistency across the publications in this case. Hence, the verification of the BFs stability in an environment simulating the
AAS is fundamental for a successful implementation as a reinforcement in the matrix. Accelerated leaching tests in
water-glass/NaOH and water-glass/Na2CO3 solutions with the evaluation of loss of mass, loss of tensile strength as well as
chemical composition changes of the fibres and leaching solutions were made using various techniques, such as XPS, SEM or
ICP-OES. A noticeable loss of mass as well as a deterioration of the tensile properties accompanied by a simultaneous
dissolution of the fibres was observed. Additionally, the transition-zone properties were studied using a SEM-EDX in this study.
Poor or no adhesion between the BFs and the AAS matrix was found",
  address="Institute of Metals and Technology",
  chapter="163764",
  doi="10.17222/mit.2019.151",
  howpublished="online",
  institution="Institute of Metals and Technology",
  number="2",
  volume="54",
  year="2020",
  month="february",
  pages="203--210",
  publisher="Institute of Metals and Technology",
  type="journal article in Web of Science"
}

Odpovědnost: Ing. Jan Brada