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Title
Mechanical properties of concretes modified with steel fibers and polypropylene

ISSN printed: 1733-8670, ISSN on-line: 2392-0378
Helbrych, Paweł1
URI: https://repository.am.szczecin.pl/handle/123456789/2729
2022-09-30
This paper presents the effect of the addition of steel and propylene fibers on the mechanical properties of floor concretes (compressive and tensile strengths in the bending test). The polypropylene fibers used in the tests (fibrillated and single fibers) are dosed in the amount of 0.5 kg/m3 to 2 kg/m3, and the straight and hooked steel is dosed from 10 kg/m3 to 25 kg/m3 . It is shown that, after 28 days of maturation, the highest compressive strength is achieved by concretes containing the addition of 25 kg/m3 of hook-like steel fiber. In addition, the influence of the fiber content on the consistency of the concrete mix and workability is investigated. It was shown that the amount of steel fibers dosed in the tests, regardless of their shape, did not adversely affect the consistency and workability of the concrete mix. On the other hand, the addition of polypropylene fibers has a significant impact on the characteristics of the concrete mix. The addition of 2 kg/m3 of polypropylene fibers caused the change of consistency from S4 to S1/S2 and worsened the workability of the mixture. All of the tested series of the concrete are created using the same technology. The concrete production technology reflects the concrete production technology for flooring concretes.
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Title

Mechanical properties of concretes modified with steel fibers and polypropylene

Pages

Figures

5

Tables

4

ISSN printed

1733-8670

ISSN on-line

2392-0378

DOI

10.17402/518

Type

Original scientific article

Journal

71 Scientific Journals of the Maritime University of Szczecin, no. 71 / 2022

Publisher

Scientific Journals Maritime University of Szczecin, Zeszyty Naukowe Akademia Morska w Szczecinie

Copyright Holder

Scientific Journals Maritime University of Szczecin, Zeszyty Naukowe Akademia Morska w Szczecinie

Published

2022-09-30

Recieved

2022-06-30

Accepted

2022-07-25

Funding

No data

Keywords

polypropylene fibers, steel fibers, fiber-reinforced concrete, concrete, mechanical properties

URI:

https://repository.am.szczecin.pl/handle/123456789/2729

Language

English

Authors

Helbrych, Paweł1

Affiliation

1 Czestochowa University of Technology, Faculty of Civil Engineering 69 J.H. Dąbrowskiego St., 42-201 Częstochowa, Poland, pawel.helbrych@pcz.pl

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