Study on the post-fire properties of concrete with recycled tyre polymer fibres

Scientific paper - Original scientific paper

• Author: Marija Jelčić Rukavina
• Author: Ana Baričević
• Author: Marijana Serdar
• Author: Martina Grubor
• Author's institution: University of Zagreb; Faculty of Civil Engineering
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Civil Engineering

Abstract (english)

This paper presents the results of an experimental study conducted to evaluate the effect of recycled tyre polymer fibres (RTPF) on the mechanical and durability properties of concrete after high temperature exposure. RTPF were used as an alternative to the commonly used polypropylene fibres (PPF) in concrete. Therefore, five different concrete mixes were tested: plain concrete, four mixes with 1 and 2 kg/m3 of RTPF and PPF, respectively. The specimens were tested under ambient conditions and after exposure to a predefined elevated temperature of up to 500°C, considering the fibre decomposition temperatures determined by the DTA/TG analysis. The results showed that when RTPF was used in concrete up to 2 kg/m3, high temperatures did not cause further deterioration of the mechanical and durability properties of concrete due to their melting. On the contrary, certain benefits of RTPF were found compared to PPF, possibly due to the higher amount of residue at high temperatures.

• Keywords (english): fibre reinforced concrete; post-fire properties; recycled tyre polymer fibres (RTPF); polypropylene fibres (PPF
• Language: english
• Publication type: Scientific paper - Original scientific paper
• Publication status: Published
• Peer review: Peer review - international
• Publication version: Published version
• Journal title: Cement & concrete composites
• Numbering: vol. 123, 104184
• e-ISSN: 1873-393X
• DOI: https://doi.org/10.1016/j.cemconcomp.2021.104184
• URN:NBN: urn:nbn:hr:237:767398
• Publication: 2021
• Type of resource: Text
• Access conditions: Open access
• Created on: 2024-09-04 11:02:32