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Investigation on pull‐out behavior and interface critical parameters of polymer fibers embedded in concrete and their correlation with particular fiber properties

  • A crucial problem in concrete engineering is the corrosion of steel reinforcements. Polymer fibers as alternative reinforcement material can prevent corrosion; however, high adhesion to concrete and good fiber mechanics are necessary for polymers to be considered as an alternative reinforcement. This study tested different thermoplastic polymer materials to evaluate their level of adhesion to concrete. The adhesion properties of different self‐drawn polymer fibers were analyzed by extracting the fibers from concrete using single fiber pull‐out test (SFPT). To determine the adhesion mechanism, different polymer properties were analyzed and correlated to SFPT. Strong evidence was found that the fibers mechanical properties correlate with SFPT. Roughening the fiber surface increases the SFPT results significantly. While highly polar materials can support the adhesion process, a clear correlation could not be found. This study identifies high stiffness and roughness as the crucial properties of polymer fibers used in concrete engineering. If these factors can be engineered into the fiber, polymer fibers can present an alternative to steel in concrete reinforcement.

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Metadaten
Author:Michael SigrünerORCiD, Dirk Muscat, Nicole Strübbe
URL:https://doi.org/10.1002/app.50745
Parent Title (English):Journal of Applied Polymer Science
Document Type:Article (peer reviewed)
Language:English
Publication Year:2021
Tag:extrusion; fibers; mechanical properties; surfaces and interfaces; thermoplastics
Volume:138
Issue:28
First Page:50745
Peer reviewed:Ja
Funding Agency:Bundesministerium für Bildung und Forschung
Grant Number:13FH068PA6
faculties / departments:Fakultät für Ingenieurwissenschaften
Zentrum für Forschung, Entwicklung und Transfer