新闻动态
钢纤维的用途
钢纤维主要用于制造钢纤维混凝土，任何方法生产的钢纤维都能起到强化混凝土的作用。
Steel fibers are mainly used in the manufacture of steel fiber reinforced concrete. Any method of production of steel fibers can play a role in strengthening concrete.
纤维的增强效果主要取决于基体强度（fm），纤维的长径比（钢纤维长度l与直径d的比值，即I/d），纤维的体积率（钢纤维混凝土中钢纤维所占体积百分数），纤维与基体间的粘结强度（τ），以及纤维在基体中的分布和取向（η）的影响。当钢纤维混凝土破坏时，大都是纤维被拔出而不是被拉断，因此改善纤维与基体间的粘结强度是改善纤维增强效果的主要控制因素之一。
The reinforcing effect of fibers mainly depends on the matrix strength (fm), the ratio of length to diameter of fibers (i/d), the volume ratio of fibers (volume percentage of steel fibers in steel fiber reinforced concrete), the bond strength between fibers and matrix (_), and the distribution and orientation of fibers in matrix (_). The impact. When steel fiber reinforced concrete is destroyed, most of the fibers are pulled out rather than broken. Therefore, improving the bond strength between the fibers and the matrix is one of the main control factors to improve the effect of fiber reinforcement.
加入钢纤维的混凝土其抗压强度、拉伸强度、抗弯强度、冲击强度、韧性、冲击韧性等性能均得到较大提高。
The compressive strength, tensile strength, flexural strength, impact strength, toughness and impact toughness of concrete with steel fibers are greatly improved.
结合钢纤维混凝土抗拉强度、弯拉强度（抗拉强度）设计公式
Design formula for tensile strength and flexural strength (tensile strength) of steel fiber reinforced concrete
钢纤维混凝土抗拉强度
Tensile strength of steel fiber reinforced concrete
钢纤维混凝土抗拉强度，可通过试验所得的劈裂抗拉强度乘以强度折减系数0.80确定，劈裂抗拉强度试验方法按GB J81规定进行
The tensile strength of steel fiber reinforced concrete can be determined by multiplying the splitting tensile strength obtained from the test by the strength reduction factor of 0.80. The splitting tensile strength test method is carried out in accordance with GB J81.
钢纤维混凝土抗拉强度标准值fftk=ftk（1+αt?ρf?lf/df）
The standard value of tensile strength of steel fiber reinforced concrete is fftk=ftk (1+ alpha t? F? Lf/df).
fftk，ftk－－钢纤维混凝土抗拉强度标准值，设计值；
Fftk, the standard value and design value of tensile strength of steel fiber reinforced concrete.
αt－－钢纤维对钢纤维混凝土抗拉强度影响系数，宜通过试验确定；
The influence coefficient of tensile strength of T steel fiber to steel fiber reinforced concrete should be determined by experiment.
ρf－－钢纤维体积率（即钢纤维掺量体积率）
Rho F - steel fiber volume fraction (i.e. volume fraction of steel fiber volume)
lf－－钢纤维长度
Length of steel fiber
df－－钢纤维直径或等效直径
Diameter and equivalent diameter of steel fiber
lf/df－－钢纤维长径比
Lf/df steel fiber aspect ratio
钢纤维混凝土弯拉强度
Flexural tensile strength of steel fiber reinforced concrete
（抗折强度）
(flexural strength)
钢纤维混凝土用于公路路面、机场道面、或其它采用弯拉强度为设计指标的结构时，与钢纤维混凝土相应的集体混凝土的弯拉强度设计值的分级和使用范围，可按国家现行有关水泥混凝土路面、机场道面等行业设计规范的规定采用。
When steel fiber reinforced concrete is used in highway pavement, airport pavement or other structures with flexural-tensile strength as design index, the classification and application scope of the design value of flexural-tensile strength of collective concrete corresponding to steel fiber reinforced concrete can be in accordance with the current national design specifications for cement concrete pavement, airport pavement and other industries. Use.
钢纤维混凝土弯拉强度设计值fftm=ftm（1+αtm?ρf?lf/df）
The design value of flexural tensile strength of steel fiber reinforced concrete is fftm=ftm (1+ alpha TM? F? Lf/df).
fftm，ftm－－钢纤维混凝土弯拉强度标准值，设计值；
The standard value and design value of flexural strength of FFTM, FTM - steel fiber reinforced concrete.
αtm－－钢纤维对钢纤维混凝土抗拉强度影响系数，宜通过试验确定；
The influence coefficient of tensile strength of TM steel fiber to steel fiber reinforced concrete should be determined by experiment.
ρf－－钢纤维体积率（即钢纤维掺量体积率）
Rho F - steel fiber volume fraction (i.e. volume fraction of steel fiber volume)
lf－－钢纤维长度
Length of steel fiber
df－－钢纤维直径或等效直径
Diameter and equivalent diameter of steel fiber
lf/df－－钢纤维长径比
Lf/df steel fiber aspect ratio
Steel fibers are mainly used in the manufacture of steel fiber reinforced concrete. Any method of production of steel fibers can play a role in strengthening concrete.
纤维的增强效果主要取决于基体强度（fm），纤维的长径比（钢纤维长度l与直径d的比值，即I/d），纤维的体积率（钢纤维混凝土中钢纤维所占体积百分数），纤维与基体间的粘结强度（τ），以及纤维在基体中的分布和取向（η）的影响。当钢纤维混凝土破坏时，大都是纤维被拔出而不是被拉断，因此改善纤维与基体间的粘结强度是改善纤维增强效果的主要控制因素之一。
The reinforcing effect of fibers mainly depends on the matrix strength (fm), the ratio of length to diameter of fibers (i/d), the volume ratio of fibers (volume percentage of steel fibers in steel fiber reinforced concrete), the bond strength between fibers and matrix (_), and the distribution and orientation of fibers in matrix (_). The impact. When steel fiber reinforced concrete is destroyed, most of the fibers are pulled out rather than broken. Therefore, improving the bond strength between the fibers and the matrix is one of the main control factors to improve the effect of fiber reinforcement.
加入钢纤维的混凝土其抗压强度、拉伸强度、抗弯强度、冲击强度、韧性、冲击韧性等性能均得到较大提高。
The compressive strength, tensile strength, flexural strength, impact strength, toughness and impact toughness of concrete with steel fibers are greatly improved.
结合钢纤维混凝土抗拉强度、弯拉强度（抗拉强度）设计公式
Design formula for tensile strength and flexural strength (tensile strength) of steel fiber reinforced concrete
钢纤维混凝土抗拉强度
Tensile strength of steel fiber reinforced concrete
钢纤维混凝土抗拉强度，可通过试验所得的劈裂抗拉强度乘以强度折减系数0.80确定，劈裂抗拉强度试验方法按GB J81规定进行
The tensile strength of steel fiber reinforced concrete can be determined by multiplying the splitting tensile strength obtained from the test by the strength reduction factor of 0.80. The splitting tensile strength test method is carried out in accordance with GB J81.
钢纤维混凝土抗拉强度标准值fftk=ftk（1+αt?ρf?lf/df）
The standard value of tensile strength of steel fiber reinforced concrete is fftk=ftk (1+ alpha t? F? Lf/df).
fftk，ftk－－钢纤维混凝土抗拉强度标准值，设计值；
Fftk, the standard value and design value of tensile strength of steel fiber reinforced concrete.
αt－－钢纤维对钢纤维混凝土抗拉强度影响系数，宜通过试验确定；
The influence coefficient of tensile strength of T steel fiber to steel fiber reinforced concrete should be determined by experiment.
ρf－－钢纤维体积率（即钢纤维掺量体积率）
Rho F - steel fiber volume fraction (i.e. volume fraction of steel fiber volume)
lf－－钢纤维长度
Length of steel fiber
df－－钢纤维直径或等效直径
Diameter and equivalent diameter of steel fiber
lf/df－－钢纤维长径比
Lf/df steel fiber aspect ratio
钢纤维混凝土弯拉强度
Flexural tensile strength of steel fiber reinforced concrete
（抗折强度）
(flexural strength)
钢纤维混凝土用于公路路面、机场道面、或其它采用弯拉强度为设计指标的结构时，与钢纤维混凝土相应的集体混凝土的弯拉强度设计值的分级和使用范围，可按国家现行有关水泥混凝土路面、机场道面等行业设计规范的规定采用。
When steel fiber reinforced concrete is used in highway pavement, airport pavement or other structures with flexural-tensile strength as design index, the classification and application scope of the design value of flexural-tensile strength of collective concrete corresponding to steel fiber reinforced concrete can be in accordance with the current national design specifications for cement concrete pavement, airport pavement and other industries. Use.
钢纤维混凝土弯拉强度设计值fftm=ftm（1+αtm?ρf?lf/df）
The design value of flexural tensile strength of steel fiber reinforced concrete is fftm=ftm (1+ alpha TM? F? Lf/df).
fftm，ftm－－钢纤维混凝土弯拉强度标准值，设计值；
The standard value and design value of flexural strength of FFTM, FTM - steel fiber reinforced concrete.
αtm－－钢纤维对钢纤维混凝土抗拉强度影响系数，宜通过试验确定；
The influence coefficient of tensile strength of TM steel fiber to steel fiber reinforced concrete should be determined by experiment.
ρf－－钢纤维体积率（即钢纤维掺量体积率）
Rho F - steel fiber volume fraction (i.e. volume fraction of steel fiber volume)
lf－－钢纤维长度
Length of steel fiber
df－－钢纤维直径或等效直径
Diameter and equivalent diameter of steel fiber
lf/df－－钢纤维长径比
Lf/df steel fiber aspect ratio
