Publication detail

Influence of Anticorrosive Surface Treatment of Steel Reinforcement Fibers on the Properties of Ultra-High Performance Cement Composite

BOCIAN, L. NOVOTNÝ, R. ŠOUKAL, F. PALOVČÍK, J. BŘEZINA, M. KOPLÍK, J.

Original Title

Influence of Anticorrosive Surface Treatment of Steel Reinforcement Fibers on the Properties of Ultra-High Performance Cement Composite

Type

journal article in Web of Science

Language

English

Original Abstract

The influence on the bond between the steel fiber and the matrix of the anticorrosive treatments of steel used for concrete reinforcement is not yet fully understood. The topic of steel fiber treatment was not also studied clearly in terms of brass removal before. This paper deals with how the brass on the surface of steel fibers behaves in the UHPC matrix and how it affects its properties. The steel fibers were firstly modified with a number of surface treatments to remove brass on their surface. Some of the treatments have never been tried before for this purpose. Secondly, the surface of the fibers was analyzed by SEM, EDS, XRF, and stereomicroscopy. Lastly, the properties of the composites were analyzed. It was found out that the majority of brass on the surface of the fibers could be removed by mixture of NH3 and H2O2 with a ratio of 3:1 (v/v). It was also found out that the surface treatment slightly affects the mechanical properties, but it does that only by mechanical interlocking between the fiber and the matrix. No dissolution of the surface treatment was observed under the given conditions. According to the results, steel fibers without surface treatment should be used in UHPC if available.

Keywords

ultra-high-performance concrete; reactive powder concrete; flexural strength; compressive strength; brass

Authors

BOCIAN, L.; NOVOTNÝ, R.; ŠOUKAL, F.; PALOVČÍK, J.; BŘEZINA, M.; KOPLÍK, J.

Released

25. 11. 2022

Publisher

MDPI

Location

BASEL

ISBN

1996-1944

Periodical

Materials

Year of study

15

Number

23

State

Swiss Confederation

Pages from

1

Pages to

16

Pages count

16

URL

https://www.mdpi.com/1996-1944/15/23/8401

Full text in the Digital Library

http://hdl.handle.net/11012/208727

BibTex

@article{BUT180494,
  author="Luboš {Bocian} and Radoslav {Novotný} and František {Šoukal} and Jakub {Palovčík} and Matěj {Březina} and Jan {Koplík}",
  title="Influence of Anticorrosive Surface Treatment of Steel Reinforcement Fibers on the Properties of Ultra-High Performance Cement Composite",
  journal="Materials",
  year="2022",
  volume="15",
  number="23",
  pages="16",
  doi="10.3390/ma15238401",
  issn="1996-1944",
  url="https://www.mdpi.com/1996-1944/15/23/8401"
}