TY - JOUR
T1 - A temperature dependent constitutive model for hybrid fibre reinforced concrete
AU - Wu, Heyang
AU - Lin, Xiaoshan
AU - Zhou, Annan
AU - Zhang, Y. X.
N1 - Publisher Copyright: © 2022 Elsevier Ltd
PY - 2023
Y1 - 2023
N2 - The use of fibre reinforced concrete (FRC) in engineering constructions has attracted increasing attention due to its excellent performance, including its improved strength, toughness, impact resistance and fire resistance. In recent years, hybrid fibres have been used in FRC to obtain better performance. To provide a reliable predicting tool and promote the application of hybrid fibre reinforced concrete (HFRC), a constitutive model is developed in this study to mimic the behaviour of HFRC under fire condition. The governing equations of damage function and strength envelope are modified in the new model. To calibrate the relationship between the mechanical properties of HFRC and temperature, a series of empirical equations are proposed. The effects of various influencing factors are considered, including fibre type, fibre shape, fibre dosage, water-binder ratio, moisture content and chemical composition. The effectiveness and accuracy of the proposed model is validated by comparing the simulation results with the test data from literature.
AB - The use of fibre reinforced concrete (FRC) in engineering constructions has attracted increasing attention due to its excellent performance, including its improved strength, toughness, impact resistance and fire resistance. In recent years, hybrid fibres have been used in FRC to obtain better performance. To provide a reliable predicting tool and promote the application of hybrid fibre reinforced concrete (HFRC), a constitutive model is developed in this study to mimic the behaviour of HFRC under fire condition. The governing equations of damage function and strength envelope are modified in the new model. To calibrate the relationship between the mechanical properties of HFRC and temperature, a series of empirical equations are proposed. The effects of various influencing factors are considered, including fibre type, fibre shape, fibre dosage, water-binder ratio, moisture content and chemical composition. The effectiveness and accuracy of the proposed model is validated by comparing the simulation results with the test data from literature.
KW - Constitutive model
KW - Empirical equation
KW - High temperature
KW - Hybrid fibre reinforced concrete
UR - http://www.scopus.com/inward/record.url?scp=85144605085&partnerID=8YFLogxK
UR - https://hdl.handle.net/1959.7/uws:76060
U2 - 10.1016/j.conbuildmat.2022.130109
DO - 10.1016/j.conbuildmat.2022.130109
M3 - Article
AN - SCOPUS:85144605085
SN - 0950-0618
VL - 365
JO - Construction and Building Materials
JF - Construction and Building Materials
M1 - 130109
ER -