一、粘结性，由于钢纤维与混凝土基体的界面粘结主要是物理性的，即以摩擦剪力的传递为主，因此对钢纤维本身来说，应该从纤维表面和纤维形状两个方面来改善其粘结性能。具体的方法有下列四种。1。使钢纤维表面粗糙化、截面呈不规则形。采用熔抽法生产就能达到这个目的。因为钢纤维在遇空气急剧冷却时，表面收缩不均匀而变得粗糙，同时截面也收缩成月牙形，增加与基体的接触面积。⒉沿钢纤维轴线方向按一定间距对纤维进行塑性加工。例如日本神户制钢公司的“信柯”钢纤维美国雷邦公司的“XOREX"钢纤维以及庆安钢铁厂的“S-2”和“S--3"号钢纤维。由于表面压成棱形，或压成波形，增加了机械粘结力。⒊使钢纤维的两端异形化。美国贝克尔公甸的"DRAMⅨ"钢纤维和庆安钢铁厂的“S-4’和as-so型钢纤维，.都是在两端制成弯钩。还有熔抽法抽取的大头形钢纤维。由于两端的锚固作用，提高了抗拨力。⒋对钢纤维表面涂覆环氧树脂和表面微锈化处理。这种方法对界面粘结强度的提高不如前几种方法，但也有一定的增强效果.小林一辅、比利时列日大学和章文纲等的试脸都证明有弯钩的钢纤维比平直钢纤维的增强效果提高约一倍，小林一辅的试验说明压棱钢纤维的效果接近有弯钩的钢纤维。这些异形钢纤维不但提高了钢纤维的强度，并且提高了韧度。波形钢纤维虽然对提高钢纤维混凝土强度的作用不大，但是能成倍地提高韧度。钢纤维是以切断细钢丝法、冷轧带钢剪切、钢锭铣削或钢水快速冷凝法制成长径比（纤维长度与其直径的比值，当纤维截面为非圆形时，采用换算等效截面圆面积的直径）为40～80的纤维。

A bond, because of interfacial bonding of steel fiber and concrete is mainly physical, the friction shear transfer, so the steel fiber itself, should be from the two aspects of the fiber surface and fiber shape to improve the bonding properties. There are four specific methods. 1. The surface of steel fiber is roughened and the cross-section is irregular. This can be achieved by means of melt extraction. Because the steel fibers in the rapid cooling in the air, the surface uneven shrinkage becomes rough, while also contracted into a crescent shaped section, increase the contact area with the substrate. The direction along the axis of steel fiber according to a certain distance of fiber plastic processing. For example, Japan Kobe steel company "Xin Ke" steel fiber America reibon company "XOREX" steel fiber and steel plant in Qing'an "S-2" and "S--3" steel fiber. Because of the surface pressure into a prism, or pressure waveform, increases the mechanical bond strength. 3 the ends of profiled steel fiber. The United States Becker Austin "DRAM IX" steel fiber and steel plant in Qing'an "S-4" and as-so type steel fiber is made. The hook at both ends. And the large headed steel fibers extracted by melt extraction. The anchoring force is increased because of the anchor action at both ends. On the surface of steel fiber and epoxy resin coated surface rust treatment. The method to improve the interface bond strength as well as several methods, but also some enhancement effect. Kobayashi Isuke, the University of Liege in Belgium and Zhang Wengang's test show that steel fiber with a hook of about one times higher than the enhancement effect of straight steel fiber, Kobayashi Isuke's rib test shows that the effect of steel fibers close to steel fiber a hook. These profiled steel fibers not only increase the strength of the steel fiber, but also increase the toughness. Although corrugated steel fiber has little effect on improving the strength of steel fiber reinforced concrete, it can increase its toughness twice. The steel fiber is to cut off the thin wire method of cold rolled strip steel, ingot shearing, rapid condensation milling or molten steel diameter ratio (the ratio of the growth process of fiber length and diameter when the fiber cross-section is non-circular, the conversion of the equivalent section area of circle diameter) 40~80 fiber.