A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Sensing mechanisms of nanomodified Portland cement composites
Mortar sensors were fabricated as beams incorporating different amounts of carbon nanofibers (CNFs) synthesized in-situ on cement particles. Changes in electrical resistivity were measured and compared to recorded changes in compressive stress, temperature, and humidity. Sensing mechanisms and corresponding models were developed. The findings of the study indicate that the piezoresistive effect is influenced by the critical concentration of CNFs inside the composite matrix and the tunneling effect. In addition, water absorption and desorption, as well as the amount of chemically bound water played an important role in humidity sensing. Thermal fluctuation-induced tunneling conduction was dominant for the temperature sensitivity. ; Validerad;2024;Nivå 2;2024-06-03 (joosat); Funder: Skanska Sverige; Full text license: CC BY
Sensing mechanisms of nanomodified Portland cement composites
Mortar sensors were fabricated as beams incorporating different amounts of carbon nanofibers (CNFs) synthesized in-situ on cement particles. Changes in electrical resistivity were measured and compared to recorded changes in compressive stress, temperature, and humidity. Sensing mechanisms and corresponding models were developed. The findings of the study indicate that the piezoresistive effect is influenced by the critical concentration of CNFs inside the composite matrix and the tunneling effect. In addition, water absorption and desorption, as well as the amount of chemically bound water played an important role in humidity sensing. Thermal fluctuation-induced tunneling conduction was dominant for the temperature sensitivity. ; Validerad;2024;Nivå 2;2024-06-03 (joosat); Funder: Skanska Sverige; Full text license: CC BY
Sensing mechanisms of nanomodified Portland cement composites
Buasiri, Thanyarat (author) / Habermehl-Cwirzen, Karin (author) / Krzeminski, Lukasz (author) / Cwirzen, Andrzej (author)
2024-01-01
ISI:001249167900001
Article (Journal)
Electronic Resource
English
Sensing mortar , Nanomodified Portland cement , Cement-based composite , Carbon nanofibers , CNF , Sensing behavior , Sensing mechanism , Piezoresistive , Humidity sensing , Temperature sensing , Electrical resistivity , Electrical conductivity , Predictive model , Building Technologies , Husbyggnad , Composite Science and Engineering , Kompositmaterial och -teknik
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