Datum
2022-03-04Schlagwort
660 Chemische Verfahrenstechnik, Technische Chemie Ultrahochfester BetonStahlfaserWasserglasKalisalzeFaserverstärkungVerbundverhaltenMetadata
Zur Langanzeige
Aufsatz
Bonding Behaviour of Steel Fibres in UHPFRC Based on Alkali-Activated Slag
Zusammenfassung
The mechanical performance of fibre-reinforced ultra-high-performance concrete based on alkali-activated slag was investigated, concentrating on the use of steel fibres. The flexural strength is slightly higher compared to the UHPC based on Ordinary Portland Cement (OPC) as the binder. Correlating the flexural strength test with multiple fibre-pullout tests, an increase in the bonding behaviour at the interfacial-transition zone of the AAM-UHPC was found compared to the OPC-UHPC. Microstructural investigations on the fibres after storage in an artificial pore solution and a potassium waterglass indicated a dissolution of the metallic surface. This occurred more strongly with the potassium waterglass, which was used as an activator solution in the case of the AAM-UHPC. From this, it can be assumed that the stronger bond results from this initial etching for steel fibres in the AAM-UHPC compared to the OPC-UHPC. The difference in the bond strength of both fibre types, the brass-coated steel fibres and the stainless-steel fibres, was rather low for the AAM-UHPC compared to the OPC-UHPC.
Zitierform
In: Materials Volume 15 / Issue 5 (2022-03-04) eissn:1996-1944Förderhinweis
Gefördert durch den Publikationsfonds der Universität KasselZitieren
@article{doi:10.17170/kobra-202204206053,
author={Wetzel, Alexander and Göbel, Daniela and Schleiting, Maximilian and Wiemer, Niels and Middendorf, Bernhard},
title={Bonding Behaviour of Steel Fibres in UHPFRC Based on Alkali-Activated Slag},
journal={Materials},
year={2022}
}
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2022-04-26T12:00:24Z 2022-04-26T12:00:24Z 2022-03-04 doi:10.17170/kobra-202204206053 http://hdl.handle.net/123456789/13788 Gefördert durch den Publikationsfonds der Universität Kassel eng Namensnennung 4.0 International http://creativecommons.org/licenses/by/4.0/ ultra-high-performance concrete fibre pullout silica fume potassium waterglass fibre reinforcement 660 Bonding Behaviour of Steel Fibres in UHPFRC Based on Alkali-Activated Slag Aufsatz The mechanical performance of fibre-reinforced ultra-high-performance concrete based on alkali-activated slag was investigated, concentrating on the use of steel fibres. The flexural strength is slightly higher compared to the UHPC based on Ordinary Portland Cement (OPC) as the binder. Correlating the flexural strength test with multiple fibre-pullout tests, an increase in the bonding behaviour at the interfacial-transition zone of the AAM-UHPC was found compared to the OPC-UHPC. Microstructural investigations on the fibres after storage in an artificial pore solution and a potassium waterglass indicated a dissolution of the metallic surface. This occurred more strongly with the potassium waterglass, which was used as an activator solution in the case of the AAM-UHPC. From this, it can be assumed that the stronger bond results from this initial etching for steel fibres in the AAM-UHPC compared to the OPC-UHPC. The difference in the bond strength of both fibre types, the brass-coated steel fibres and the stainless-steel fibres, was rather low for the AAM-UHPC compared to the OPC-UHPC. open access Wetzel, Alexander Göbel, Daniela Schleiting, Maximilian Wiemer, Niels Middendorf, Bernhard doi:10.3390/ma15051930 Ultrahochfester Beton Stahlfaser Wasserglas Kalisalze Faserverstärkung Verbundverhalten publishedVersion eissn:1996-1944 Issue 5 Materials Volume 15 false 1930
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