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当前位置:剪切型钢纤维的主要性能
剪切型钢纤维的主要性能
[来源:http://www.gangxianwei51.com] [作者:不详] [日期:21-10-12] [浏览次数:]

剪切型钢纤维的主要性能 The main properties of shear type steel fiber 1、抗拉强度 1. Tensile strength 为使钢纤维混凝土具有良好的力学性能,要求钢纤维具有一定的抗拉强度。钢纤维的抗拉强度,根据钢纤维的材质和生产工艺不同,其抗拉强度也有所区别。剪切型钢纤维的抗拉强度一般为380~800MPa。 In order to make steel fiber reinforced concrete have good mechanical properties, steel fiber must have certain tensile strength. The tensile strength of steel fiber varies according to the material and production technology of steel fiber. The tensile strength of shear steel fiber is generally 380~800MPa. 2、粘结强度 2. Bond strength 钢纤维的粘结强度,可按《钢纤维混凝土试验方法标准》(CECS13:89)用直接拉拔法测定钢纤维与水泥砂浆之间的粘结强度。 The bond strength of steel fiber can be measured by the direct drawing method of steel fiber concrete test method (CECS13:89). 由于钢纤维混凝土的破坏主要是钢纤维的拔出而不是拉断,因此钢纤维的增强主要取决于钢纤维混凝土基体界面的粘结强度。提高粘结强度除与基体的性能有关外,就钢纤维本身来说,应该从钢纤维的表面和形状来改善它与基体的粘结性能。为了提高钢纤维的粘结强度,常采用:使钢纤维表面粗糙化、截面呈不规则形,增加与基体的接触面积和摩擦力;将钢纤维表面压痕,或压成波形,增加机械粘结力;使钢纤维的两钢制闸门 钢坝 保定轻钢别墅 保定平面设计培训 保定室内设计培训 保定办公家具 保定空调维修 端异形化,将两端制成弯钩或大头形等,以提高其锚固力和抗拔力。 Because the damage of steel fiber concrete is mainly the pulling out of steel fiber, not breaking, the reinforcement of steel fiber mainly depends on the bond strength of the interface of the steel fiber reinforced concrete matrix. In addition to the improvement of the bond strength, the bond properties of the steel fiber should be improved from the surface and shape of the steel fiber, as far as the properties of the matrix are concerned. In order to improve the bond strength of steel fiber, it is often used to make the surface of the steel fiber rough, the cross section is irregular, the contact area and the friction force of the steel fiber are increased, the surface of the steel fiber is indentation, or pressure is pressed into the wave form, and the mechanical bonding force is increased; the two ends of the steel fiber are specialized, and the two ends are made of crooked hook or large head shape. High anchorage and pulling resistance. 试验表明,异形钢纤维比平直形钢纤维的增强效果可提高约一倍。 The experiment shows that the reinforcing effect of profiled steel fiber can be approximately doubled than that of plain steel fiber.

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