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Article


Title

Influence of Polyurea Coatings on Low-Longitudinal-Reinforcement-Ratio Reinforced Concrete Beams Subjected to Bending

Authors

[ 1 ] Instytut Budownictwa, Wydział Inżynierii Lądowej i Transportu, Politechnika Poznańska | [ 2 ] Instytut Inżynierii Lądowej, Wydział Inżynierii Lądowej i Transportu, Politechnika Poznańska | [ P ] employee

Scientific discipline (Law 2.0)

[2.6] Civil engineering and transport

Year of publication

2022

Published in

Materials

Journal year: 2022 | Journal volume: vol. 15 | Journal number: iss. 7

Article type

scientific article

Publication language

english

Keywords
EN
  • reinforced concrete beams
  • bending elements
  • serviceability limit state
  • polyurea
  • cracks
  • durability of reinforced concrete elements
  • reinforcement
  • retrofitting
Abstract

EN "Polyurea coatings as a possible structural reinforcement system" is a research investigation that aims to explore the possible applications of polyurea coatings for improving structural performance (including steel, concrete, timber and other structures used in the construction industry). As part of the research in this field, this paper focuses on evaluating the performance of bending polyurea-coated reinforced concrete (RC) beams with a low reinforcement ratio. The easy application and numerous advantages of polyurea can prove very useful when existing RC structural elements are repaired or retrofitted. Laboratory tests of RC beams were performed for the purpose of this paper. The failure mechanisms and cracking patterns of these specimens are described, and their bending strengths were compared. On this basis, the effect of the coating on bending strength and the performance of the reinforced beams at the serviceability limit state (SLS) was examined and analyzed. The results showed that the use of a polyurea coating has a positive impact on the cracking and deflection state of RC beams and makes it possible to safely use RC elements on a continuous basis under high levels of load.

Date of online publication

04.04.2022

Pages (from - to)

2652-1 - 2652-20

DOI

10.3390/ma15072652

URL

https://www.mdpi.com/1996-1944/15/7/2652

Comments

Article Number: 2652

License type

CC BY (attribution alone)

Open Access Mode

open journal

Open Access Text Version

final published version

Date of Open Access to the publication

at the time of publication

Points of MNiSW / journal

140.0

Impact Factor

3.623 [List 2020]

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