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利用梯度结构的概念提出了水泥基梯度功能材料的结构模型,初步研究了界面组分梯度分布和纤维梯度分布对混凝土,纤维增强混凝土和纤维增强砂浆力学性能的影响。结果表明:采用不同配比的分层配料、振动成型的方法,可以基本保证组分呈梯度连续变化;界面组分的梯度变化可以明显改善界面粘结而提高强度;纤维的梯度变化更符合受力状态,与纤维均匀分布相比,可以明显提高强度,并可以节约纤维用量。显示了水泥基梯度功能材料良好的发展前景。
Based on the concept of gradient structure, the structural model of cement-based graded functional materials is proposed. The effects of gradient distribution of interface components and fiber gradient distribution on the mechanical properties of concrete, fiber reinforced concrete and fiber reinforced mortar are studied. The results show that the layered composition and vibration molding with different proportions can basically guarantee the continuous gradient of the components; the gradient of the interface components can obviously improve the interfacial adhesion and improve the strength; Force state, compared with the uniform fiber distribution, can significantly improve the strength, and can save fiber consumption. The good prospects of cement-based graded functional materials are shown.