- AutorIn
- Fei Wang
- Titel
- Thermal induced cracking of granite
- Untertitel
- laboratory investigations and numerical simulations
- Zitierfähige Url:
- https://nbn-resolving.org/urn:nbn:de:bsz:105-qucosa2-386600
- Datum der Einreichung
- 12.08.2019
- Datum der Verteidigung
- 03.03.2020
- Abstract (EN)
- The impact of temperatures (up to 1000 °C) with various heating rates of 5 °C/min, 200 °C/min, 300 °C/min, and according to ISO 834 standard fire curve on physical, mechanical, and thermal properties, as well as thermo-mechanical behaviors of granites were investigated. A new methodology was proposed for the heterogeneity characterization of rocks at the grain-size level in numerical simulation. The thermo-mechanical constitutive law is developed by combining the temperature-dependent relations of granite properties with classical Mohr-Coulomb model with strain-softening and tension cut-off. The proposed modelling strategy is able to replicate the thermal induced cracking which results in reduced peak strength, pronounced softening and transition from brittle to ductile behaviour. Research results help to understand the damage mechanisms of granite caused by fire or other high temperature conditions, and can be used to develop guidelines for repair and maintenance as well as assessment of risks of tunnels and historical buildings after fire accidents.
- Freie Schlagwörter (DE)
- Thermisches Cracken, numerische Simulation, Temperatur
- Freie Schlagwörter (EN)
- thermal cracking, rock, fire, numerical simulation, temperature
- Klassifikation (DDC)
- 550
- Normschlagwörter (GND)
- Granit
- Wärmeausdehnung
- Bruchverhalten
- Rissbildung
- Temperaturabhängigkeit
- Thermisches Verfahren
- GutachterIn
- Prof. Dr.-Ing. habil. Heinz Konietzky
- Prof. Dr. Arno Zang
- Prof. Dr. Yawei Li
- Dr. Philipp Hartlieb
- BetreuerIn Hochschule / Universität
- Prof. Dr.-Ing. habil. Heinz Konietzky
- Den akademischen Grad verleihende / prüfende Institution
- TU Bergakademie Freiberg, Freiberg
- Version / Begutachtungsstatus
- publizierte Version / Verlagsversion
- URN Qucosa
- urn:nbn:de:bsz:105-qucosa2-386600
- Veröffentlichungsdatum Qucosa
- 11.03.2020
- Dokumenttyp
- Dissertation
- Sprache des Dokumentes
- Englisch