In the present era, concrete is the widely used construction material in the construction industry due to its high durability to cost ratio.^1,2 However, the reduced tensile properties of the concrete confine its applications, where the flexural and tensile properties of the concrete are predominant. Since the occurrence of numerous disasters around the world, in recent years, the researchers are showing more interest to enhance the tensile and energy absorption capacity of the concrete structures to resist seismic, fatigue, impact and blast loadings.³ Even though the strength of the concrete is higher, the tensile and energy absorption capacity of the concrete are very poor under above such loadings. It has been well documented that the inclusion of different types of fibres including steel and synthetic fibres significantly enhanced the tensile, toughness, impact resistance and energy abortion capacity of the concrete. As the fibre-reinforced concrete (FRC) exhibits numerous benefits, it has been widespread in various high-end structural applications including floors, walls, precast elements and offshore structures.^{4– 6} Even though the inclusion of fibre reduced the crack development and improved the tensile strength capacity of the concrete, the inclusion of fibre has no significant improvement on the compressive strength capacity of the concrete. Yongchun Cheng et al.,⁷ Bencardino et al.⁸ and Feifei Jiang et al.⁹ reported that the dosage of steel and synthetic fibre in concrete marginally influenced the tensile strength of the concrete and improved the interfacial bond strength of concrete. Therefore, it is very imperative to increase the compressive strength of the concrete, where the compressive tensile properties of the concrete are predominant for its application.¹⁰

中文翻译：

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DOE方法可优化掺入不同比例的PVA纤维和纳米Fe ₂ O ₃的混凝土的强度性能

在当今时代，混凝土由于其高的耐久性与成本比而成为建筑业中广泛使用的建筑材料。^1,2然而，降低的混凝土抗拉性能限制了其应用，而混凝土的挠曲和抗拉性能占主导。自从世界范围内发生许多灾难以来，近年来，研究人员对增强混凝土结构的抗震和抗疲劳，冲击，爆炸荷载的抗拉和能量吸收能力表现出了更大的兴趣。³尽管混凝土的强度较高，但在上述载荷下，混凝土的拉伸和能量吸收能力仍然很差。大量文献证明，包括钢和合成纤维在内的不同类型的纤维的加入显着增强了混凝土的拉伸，韧性，抗冲击性和能量流产能力。由于纤维增强混凝土（FRC）具有许多优点，因此已广泛应用于各种高端结构应用中，包括地板，墙壁，预制构件和海上结构。^4–6即使包含纤维减少了裂缝的发展并改善了混凝土的抗拉强度，但包含纤维对混凝土的抗压强度没有显着的改善。程永春等，⁷ Bencardino等。⁸和Feifei Jiang等。⁹报道说，混凝土中钢和合成纤维的用量对混凝土的抗拉强度有轻微影响，并改善了混凝土的界面粘结强度。因此，提高混凝土的抗压强度是非常必要的，而混凝土的抗压性能是其应用的主要方向。¹⁰