<abstract xmlns="http://www.w3.org/1999/xhtml"><p>The paper describes changes of strength of steel anchors depending on the diameter of the drill hole, the crack width and presence of plastic and steel fibres. Tests were carried out on C20/25 concrete bases with two specific fibre admixtures. Two types of anchors were selected for the tests: stud and sleeve anchors with M12 diameter, for their frequent application in construction. Steelbet 50/0.8 fibres affect the strength of the connections which use stud anchors, reducing the pullout resistance by ca. 10% in non-cracked C20/25 concrete. For cracked concrete with crack width of 0.30 mm and connections using stud anchors, no effect of using steel fibres was found, a 30% increase in strength was found for connections using stud anchors and the minimum drill hole diameter and a 20% reduction in strength for the maximum drill hole diameter, as compared to the minimum diameter. For sleeve anchors, reductions and an increase of 10% in strength were observed. The obtained results indicate a need to develop assessment criteria for effects of external factors in the form of steel fibre admixtures.</p></abstract>

The paper describes changes of strength of steel anchors depending on the diameter of the drill hole, the crack width and presence of plastic and steel fibres. Tests were carried out on C20/25 concrete bases with two specific fibre admixtures. Two types of anchors were selected for the tests: stud and sleeve anchors with M12 diameter, for their frequent application in construction. Steelbet 50/0.8 fibres affect the strength of the connections which use stud anchors, reducing the pullout resistance by ca. 10% in non-cracked C20/25 concrete. For cracked concrete with crack width of 0.30 mm and connections using stud anchors, no effect of using steel fibres was found, a 30% increase in strength was found for connections using stud anchors and the minimum drill hole diameter and a 20% reduction in strength for the maximum drill hole diameter, as compared to the minimum diameter. For sleeve anchors, reductions and an increase of 10% in strength were observed. The obtained results indicate a need to develop assessment criteria for effects of external factors in the form of steel fibre admixtures.

Impact of Plastic and Steel Fibre Reinforcement on the Strength of Steel Anchors

Acta Scientiarum Polonorum Architectura

This work is licensed under the Creative Commons Attribution-NonCommercial 4.0 International License.

{"article-title":"Impact of Plastic and Steel Fibre Reinforcement on the Strength of Steel Anchors"}

The paper describes changes of strength of steel anchors depending on the diameter of the drill hole, the crack width and presence of plastic and steel fibres....

Impact of Plastic and Steel Fibre Reinforcement on the Strength of Steel Anchors

Published Online: Apr 30, 2021

Page range: 31 - 38

Received: Nov 20, 2020

Accepted: Jan 18, 2021

DOI: https://doi.org/10.22630/aspa.2021.20.1.4

Keywords
fibre concrete, steel anchors, plastic and steel, concrete, crack

© 2021 Daniel Dudek et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial 4.0 International License.

Impact of Plastic and Steel Fibre Reinforcement on the Strength of Steel Anchors

Published Online: Apr 30, 2021

Page range: 31 - 38

Received: Nov 20, 2020

Accepted: Jan 18, 2021

DOI: https://doi.org/10.22630/aspa.2021.20.1.4

Keywordsfibre concrete, steel anchors, plastic and steel, concrete, crack

© 2021 Daniel Dudek et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial 4.0 International License.

Keywords
fibre concrete, steel anchors, plastic and steel, concrete, crack