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Monitoring temperature and hydration by mortar sensors made of nanomodified Portland cement
AbstractMortar beams incorporating carbon nanofibers (CNFs), which were synthesized in situ on Portland cement particles, were used to produce nanomodified Portland cement sensors (SmartCem sensors). SmartCem sensors exhibited an electrical response comparable to a thermistor with a temperature coefficient of resistivity of − 0.0152/ °C. The highest temperature sensing was obtained for the SmartCem sensor, which contained ~ 0.271 wt.% of CNFs. The calculated temperature sensitivity was approximately 11.76% higher in comparison with the mortar beam containing only unmodified Portland cement. SmartCem sensors were used to monitor the cement hydration in large-scale self-compacting concrete beams. The measurements were conducted after casting for 7 days. Additionally, commercially available thermocouple and humidity sensors were used as references. The results showed that changes in electrical resistivity measured by the SmartCem sensor were well aligned with the ongoing hydration processes.
Monitoring temperature and hydration by mortar sensors made of nanomodified Portland cement
AbstractMortar beams incorporating carbon nanofibers (CNFs), which were synthesized in situ on Portland cement particles, were used to produce nanomodified Portland cement sensors (SmartCem sensors). SmartCem sensors exhibited an electrical response comparable to a thermistor with a temperature coefficient of resistivity of − 0.0152/ °C. The highest temperature sensing was obtained for the SmartCem sensor, which contained ~ 0.271 wt.% of CNFs. The calculated temperature sensitivity was approximately 11.76% higher in comparison with the mortar beam containing only unmodified Portland cement. SmartCem sensors were used to monitor the cement hydration in large-scale self-compacting concrete beams. The measurements were conducted after casting for 7 days. Additionally, commercially available thermocouple and humidity sensors were used as references. The results showed that changes in electrical resistivity measured by the SmartCem sensor were well aligned with the ongoing hydration processes.
Monitoring temperature and hydration by mortar sensors made of nanomodified Portland cement
Mater Struct
Buasiri, Thanyarat (Autor:in) / Kothari, Ankit (Autor:in) / Habermehl-Cwirzen, Karin (Autor:in) / Krzeminski, Lukasz (Autor:in) / Cwirzen, Andrzej (Autor:in)
01.02.2024
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Monitoring temperature and hydration by mortar sensors made of nanomodified Portland cement
Springer Verlag | 2024
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