钢纤维混凝土巴西圆盘与圆球试样劈拉实验的对比研究

By the Brazilian disc split method, the spilt principle for the radial compression of rotating spheroid has been discussed. The split principle and detailed operation method for concrete sphere specimen has been presented. The transform equation concerning Brazilian disc split strength, sphere specimen split strength, octahedral stress and the Rode angel has been obtained. This method can realize C/T/T proportional loading by ordinary universal testing machine and the tested strength point with the Rode angel θ=60 is on tension meridian line. The concrete specimens with 1% steel fiber has been tested, and in the Brazilian disc specimen test, the split strength was σT=1.512MPa.