一、粘结性

1. Cohesiveness

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。

Because the interfacial bonding between steel fiber and concrete matrix is mainly physical, that is, the transfer of friction and shear is the main factor. Therefore, for steel fiber itself, the bond performance should be improved from two aspects of fiber surface and fiber shape. The specific methods include the following four kinds.

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

1. The surface of steel fiber is rough and the cross section is irregular. This purpose can be achieved by the production of molten metal. Because the steel fibers in the rapid cooling in the air, the surface uneven shrinkage becomes rough, while section also contracted into a crescent, increase with the matrix

接触面积。

Contact area.

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（图2-1,c）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。

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 (Fig. 2-1, c) and Qing'an iron and steel plant "S-2" and "S--3" steel fiber. Because of the surface pressure into a prism, or pressure waveform, increases the mechanical bond strength.

⒊使钢纤维的两端异形化。美国贝克尔公甸的"DRAMⅨ"钢纤维（图2-1,e）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。

3 the ends of profiled steel fiber. The United States Becker Austin "DRAM IX" steel fiber (Fig. 2-1, e) and the Qing'an iron and steel plant S-4'and as-so type steel fiber is made. The hook at both ends. There is also a large head steel fiber extracted by the melting method. Due to the anchorage action of the two ends, the resistance to dialing is improved.

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.

On the surface of steel fiber and epoxy resin coated surface rust treatment. This method improves the interfacial bond strength less than the previous methods, but it also has a certain enhancement effect.

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

Kobayashi Isuke, Belgium University of Liege and Zhang Wengang have proved that the steel fiber reinforced with crooked hooks is almost twice the enhancement effect of plain steel fiber. Kobayashi Isuke's experiment shows that the effect of the steel fiber is nearly the same as that of the crooked hook steel fiber. These special-shaped steel fibers not only improve the strength of the steel fiber, but also improve the toughness. Although the corrugated steel fiber has little effect on improving the strength of steel fiber reinforced concrete, it can be doubled.

提高韧度。

Improve the toughness.

二：硬度

Two: hardness

无论哪一种加工方法制造的钢纤维，在加工过程中都遇到高

No matter which process is made of steel fiber, it is high in the process of processing.

热和急剧冷却，相当于淬火状态。因此钢纤维的表面硬度都较

Heat and sharp cooling, equivalent to the state of quenching. So the surface hardness of steel fiber is better than that of steel fiber.

高。用于混凝土补强进行搅拌时很少发生弯曲现象。如果钢纤维

High. When the concrete is used for mixing, there is little bending when mixing. If steel fiber

过硬过脆，搅拌时也易折断，影响增强效果。

Strong and brittle, when agitation is easy to break, affect the effect of enhancement.

在熔抽法生产钢纤维时，从熔抽轮下离心喷出的钢纤维仍处

When the steel fiber is produced by the melting process, the steel fiber which is ejected from the centrifugal pump is still located.

于高温状态，必须用滚筒或振动输送方法分散并进行冷却。否则

In the high temperature state, it must be dispersed and cooled by a roller or a vibrating conveying method. otherwise

钢纤维聚集，热量难以散发，反而起退火作用。

Steel fiber aggregates, heat is difficult to distribute, instead of annealing.