钢纤维混凝土的定义 The definition of steel fiber concrete 　　用适量的均匀、乱向分散短钢纤维增强并具有可浇灌或可喷射的普通混凝土称为钢纤维混凝土。 It is called steel fiber concrete with the right amount of uniform, discomfable, and in the form of an ordinary concrete that can be watered or sprayed. 　　原材料：制备普通钢纤维混凝土主要使用低碳钢的钢纤维，而制备钢纤维耐火混凝土，则必须使用不锈钢纤维。最普通的钢纤维是圆截面的长直纤维，但为改善纤维与水泥基材的界面粘结可把钢纤维制成各种特殊的形状如：波形、哑铃形、端部带钩的、扁平的、表面凸凹状的与卷曲状的；水泥一般使用425号、525号普通硅酸盐水泥，配制高强度钢纤维砼可使用625号以上的硅酸盐水泥或明矾石水泥；沙石粒径为0.15-0.5；石子最大粒径一般不大于15mm，对于喷射砼石子粒径一般不大于10mm；外加剂宜选用优质减水剂，但应符合有关外加剂的质量规定要求，严禁掺加氯盐。为降低水灰比，改善拌和物的和易性，可使用减水剂或塑化剂。 Raw material: preparation of common main use of low carbon steel fiber, steel fiber reinforced concrete and the preparation of steel fiber reinforced refractory concrete, must use the stainless steel fibers. The most common steel fiber is long circular section of straight, but in order to improve the fiber and the interfacial bonding of cement base material of steel fiber can be made into various special shapes such as: waveform, dumbbell shape, the end of the hook, flat, surface convex concave shape and curls. The cement is usually made of 425, 525 ordinary Portland cement, and the reinforced concrete can be made of silicate cement or alum cement, which is more than 625. The gravel size is 0.15-0.5; The maximum size of a pebble is not greater than 15mm, and it is not greater than 10mm for injection concrete. The admixtures should be used for quality dewatering, but it should comply with the requirement of the quality regulation of the additive, and it is strictly forbidden to add chlorine salt. In order to reduce the water dust ratio, improve the harmony and the ease of the mix, use a water reducer or plasticizer.