Publication detail

Study of the behaviour of recycled and traditional fibres in cement composite at extreme temperatures

KŘÍŽOVÁ, K. BARÁNEK, Š. BUBENÍK, J. MAZÁN, T.

Original Title

Study of the behaviour of recycled and traditional fibres in cement composite at extreme temperatures

Type

journal article in Web of Science

Language

English

Original Abstract

In this work, the behaviour of selected fibre types in cement composite mortar at different loading temperatures was investigated. The fibres used were industrially produced polypropylene fibres, recycled fibres from PET bottles and two types of cellulose fibres of which one type is produced by recycling wastepaper. Fibres were added to the cement composites in percentages ranging from 0, 0.3, 0.6, 0.75, 0.9 to 1.2%. The properties of the cement composites, such as flexural and compressive strength, were tested at different fibres percentages at laboratory temperatures of 200, 400, 600 and 800 °C. For all types of fibres used, the workability of the fresh mixture was found to be decreased. Comparable strength results to the reference mixture were obtained when recycled polypropylene and cellulose fibres were used. Based on the results obtained, the most effective fibres dosage was determined to be 0.6%. The most positive tensile flexural and compressive strength results after a thermal loading of 800 °C were obtained with recycled cellulose fibres compared to the reference mixture without fibres. It was evaluated by microscopic observation that the cellulose fibres are present in the composite even at temperatures around 400 °C, while the polymer fibres are completely burnt out. The research confirmed the clear benefits of using recycled fibres instead of conventionally used polymer fibres.

Keywords

Cement composite, organic fibers, recycled fibers, rheological properties, physical mechanical properties, thermal loading.

Authors

KŘÍŽOVÁ, K.; BARÁNEK, Š.; BUBENÍK, J.; MAZÁN, T.

Released

15. 10. 2024

Publisher

ELSEVIER

Location

RADARWEG 29, 1043 NX AMSTERDAM, NETHERLANDS

ISBN

2352-7102

Periodical

Journal of Building Engineering

Number

110134

State

Kingdom of the Netherlands

Pages count

20

URL

https://www.sciencedirect.com/science/article/pii/S2352710224017029

BibTex

@article{BUT187123,
  author="Klára {Křížová} and Šimon {Baránek} and Jan {Bubeník} and Tomáš {Mazán}",
  title="Study of the behaviour of recycled and traditional fibres in cement composite at extreme temperatures",
  journal="Journal of Building Engineering",
  year="2024",
  number="110134",
  pages="20",
  doi="10.1016/j.jobe.2024.110134",
  issn="2352-7102",
  url="https://www.sciencedirect.com/science/article/pii/S2352710224017029"
}