Three reinforcement ratios (0, 50, and 100%) of carbon fiber reinforced plastics (CFRP) were selected to improve the mechanical properties of recycled brick concrete in this study. Utilizing axial compression test, X-ray diffractometer analysis, the evolution of parameters such as compressive strength, peak stress, and elastic modulus of reclaimed concrete were analyzed. The reclaimed brick concrete’ stress distribution and damage mechanism were revealed. The aggregate internal failure and CFRP reinforcement effect mechanism are discussed. The finite element model of red brick concrete reinforced by CFRP under uniaxial compression is established. The constitutive model for CFRP-reinforced recycled brick concrete is proposed.

中文翻译：

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CFRP增强再生红砖混凝土机械损伤机理研究

本研究选择了三种增强比例（0%、50%和100%）的碳纤维增强塑料（CFRP）来提高再生砖混凝土的力学性能。利用轴压试验、X射线衍射仪分析，分析再生混凝土的抗压强度、峰值应力、弹性模量等参数的演变。揭示了再生砖混凝土的应力分布和损伤机制。讨论了骨料内部破坏和CFRP加固作用机理。建立了碳纤维布增强红砖混凝土单轴受压的有限元模型。提出了CFRP增强再生砖混凝土的本构模型。