Study on the Axial Compression Constitutive Model of Coal Gangue Concrete Confined with BFRP
XIA Junwu1,2,3,*, ZHU Zhichun1, LIN Jundong4, HE Yuan1, YU Jun1, BAI Jianbiao5
1 School of Mechanics and Civil Engineering, China University of Mining and Technology, Xuzhou 221116, Jiangsu, China 2 Jiangsu Key Laboratory of Civil Engineering Disaster Prevention and Intelligent Control, Xuzhou 221116, Jiangsu, China 3 State Key Laboratory of Intelligent Construction and Healthy Operation and Maintenance of Deep Underground Engineering,China University of Mining and Technology,Xuzhou 221116,Jiangsu, China 4 Wuhu Housing and Urban Rural Development Bureau Drainage Management Office, Wuhu 241007, Anhui, China 5 School of Mining and Geology, Xinjiang Institute of Engineering, Urumqi 830023, China
Abstract: To establish a constitutive model for coal gangue concrete confined with basalt fiber reinforced polymer (BFRP), experiments were conducted to investigate the influence of the number of BFRP layers and concrete strength on the axial mechanical properties and constitutive relationships. The results show that the more BFRP layers there are, the greater the increase in ultimate compressive strength and ultimate axial strain. Additionally, the lower the strength of the gangue concrete, the better the BFRP confinement effect. The degree of BFRP confinement is found to be the main factor affecting the shape of the constitutive relationship curve. A constitutive model for coal gangue concrete confined with BFRP under different types of confinement (strong confinement and weak confinement) is established, and it is proved to have high accuracy and good applicability by the verified experiment.
夏军武, 朱致淳, 林俊东, 何源, 于峻, 柏建彪. BFRP约束煤矸石混凝土轴压本构模型研究[J]. 材料导报, 2025, 39(16): 24070132-6.
XIA Junwu, ZHU Zhichun, LIN Jundong, HE Yuan, YU Jun, BAI Jianbiao. Study on the Axial Compression Constitutive Model of Coal Gangue Concrete Confined with BFRP. Materials Reports, 2025, 39(16): 24070132-6.
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2025, Vol. 39 
