| 钢纤维混凝土抗拉强度 |
| 添加时间：2018/11/7 10:27:38 浏览次数： |
| 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. Rh. 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（抗折强度） Flexural strength (flexural strength) of steel fiber reinforced concrete 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 f lf/df). fftm，ftm－－钢纤维混凝土抗拉强度标准值，设计值； FFTM, the standard value and design value of tensile strength of 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 |
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