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钢纤维混凝土的增强机理
钢纤维混凝土（SFRC）是在普通混凝土中掺入适量短钢纤维而形成的可浇筑、可喷射成型的一种新型复合材料，近年来在国内外得到迅速发展。它克服了混凝土抗拉强度低、
Steel fiber reinforced concrete (SFRC) is a new type of composite material which can be poured and sprayed by adding appropriate amount of short steel fiber into ordinary concrete. It has been developed rapidly at home and abroad in recent years. It overcomes the shortcomings of low tensile strength, small ultimate elongation and brittleness of concrete, and has excellent tensile, bending, shear, crack resistance, fatigue resistance, high toughness and other properties. It has been applied in hydraulic engineering, road and bridge, construction and other engineering fields.
钢纤维混凝土的增强机理
Strengthening mechanism of steel fiber reinforced concrete
1. 复合力学理论。复合力学理论是以连续纤维复合材料理论为基础，结合钢纤维在混凝土中的分布特点形成的。该理论是将复合材料视为以纤维为一相、基体为另一相的两相复合材料。
1. Theory of compound mechanics. The theory of composite mechanics is based on the theory of continuous fiber composite and the distribution characteristics of steel fiber in concrete. In this theory, composites are regarded as two-phase composites with fiber as one phase and matrix as the other.
2. 纤维间距理论。纤维间距理论又称阻裂理论，是根据线弹性断裂力学而提出的，该理论认为纤维的增强作用仅与均匀分布的纤维间距(最小间距)有关。
2. Fiber spacing theory. The theory of fiber spacing, also known as crack resistance theory, is based on the linear elastic fracture mechanics. The theory holds that the reinforcement effect of fibers is only related to the uniformly distributed fiber spacing (minimum spacing).
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极限延伸率小、性脆等缺点，具有优良的抗拉、抗弯、抗剪、阻裂、耐疲劳、高韧性等性能，已在水工、路桥、建筑等工程领域得到应用。Steel fiber reinforced concrete (SFRC) is a new type of composite material which can be poured and sprayed by adding appropriate amount of short steel fiber into ordinary concrete. It has been developed rapidly at home and abroad in recent years. It overcomes the shortcomings of low tensile strength, small ultimate elongation and brittleness of concrete, and has excellent tensile, bending, shear, crack resistance, fatigue resistance, high toughness and other properties. It has been applied in hydraulic engineering, road and bridge, construction and other engineering fields.
钢纤维混凝土的增强机理
Strengthening mechanism of steel fiber reinforced concrete
1. 复合力学理论。复合力学理论是以连续纤维复合材料理论为基础，结合钢纤维在混凝土中的分布特点形成的。该理论是将复合材料视为以纤维为一相、基体为另一相的两相复合材料。
1. Theory of compound mechanics. The theory of composite mechanics is based on the theory of continuous fiber composite and the distribution characteristics of steel fiber in concrete. In this theory, composites are regarded as two-phase composites with fiber as one phase and matrix as the other.
2. 纤维间距理论。纤维间距理论又称阻裂理论，是根据线弹性断裂力学而提出的，该理论认为纤维的增强作用仅与均匀分布的纤维间距(最小间距)有关。
2. Fiber spacing theory. The theory of fiber spacing, also known as crack resistance theory, is based on the linear elastic fracture mechanics. The theory holds that the reinforcement effect of fibers is only related to the uniformly distributed fiber spacing (minimum spacing).
