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Interpretation of common steel fiber knowledge1
Fiber is the most basic unit of composition materials. At present, the most common classification of fibers may be textile fibers, but in addition to the textile industry, other industries will also use different fiber materials. For example, this article will introduce a common steel fiber. . The interface between cement matrix and aggregate in concrete is the weak link of concrete. For steel fiber reinforced concrete, the interface between cement matrix and steel fiber is often the weakest link in steel fiber reinforced concrete. The interface between cement stone and steel fiber is bonded. Mainly physical bonding. The so-called physical bonding is caused by the adhesion and mechanical meshing between the cement hydrate and the steel fiber interface. Therefore, the shape, surface condition, cross-sectional shape of the steel fiber and the material of the steel fiber have a great influence on such physical bonding. . At present, the steel fibers that are widely used mainly include the following: (1) Short fibers made by cutting steel wires: the production process of this kind of fiber is relatively simple, the tensile strength of the obtained steel fibers is high, and the disadvantage is that the surface is smooth , so the bond strength with the concrete matrix is low. (2) Sheet shear steel fiber: The production process of this kind of fiber is similar to the first one. The raw material is a thin steel plate with the same width as the required fiber length, and then it is made by shearing, and the steel fiber is slightly bent during the shearing. and twisting, which increases the bond strength. (3) Steel ingot milling steel fiber: using steel ingot as raw material, the fiber is made by cutting with a milling cutter. This fiber is characterized by axial twist, and the surface of the fiber can be roughened by improving the cutter. In addition, the first two The surface of this fiber will be more or less adhered to impurities such as oil stains during the production process, and the production method of this fiber can ensure that its surface is clean. Therefore, the bond strength between the steel fibers prepared by this method and the concrete matrix is higher than that of the first two steel fibers.
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As a global textile testing equipment company, we take on some of the world’s biggest textile testing equipment challenges. GESTER International Co.,Limited have a whole series of tensile tester manufacturers textile testing equipment that can solve your textile testing equipment problem in an effective manner. Check it at GESTER Instruments.
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Cut resistance is one of the most critical performance indicators in personal protective equipment (PPE) testing, directly affecting worker safety in high-risk industries such as metal processing, machinery manufacturing, and emergency rescue. The TDM Cut Test Machine GT-KC28 plays a vital role in accurately evaluating the cut resistance of PPE products, including gloves, protective clothing, footwear materials, composite materials, rubber, and industrial textiles.
By adopting high-precision force control systems, intelligent data processing, and stable transmission technology, the GT-KC28 TDM Cut Tester can accurately measure the critical cutting force of materials and ensure excellent repeatability and comparability of test results. Its user-friendly touch-screen operation, comprehensive data storage, USB data export, and built-in thermal printer greatly improve laboratory efficiency and data traceability.
The TDM Cut Test Machine GT-KC28 fully complies with major international and national standards such as ISO 13997, EN 388, ASTM F2992/F2992M, ANSI/ISEA 105, and GB 24541-2022, making it a reliable solution for PPE manufacturers, third-party testing laboratories, and research institutions. Through precise and standardized cut resistance testing, the GT-KC28 helps reduce industrial cutting injuries, supports PPE certification across global markets, and ensures that protective equipment delivers reliable safety performance in real-world applications.
The Heat Contact Machine GT-C101 is a specialized testing instrument designed for evaluating the heat resistance and thermal protective performance of gloves, protective clothing, and other heat-resistant materials used in high-temperature environments. In industries such as smelting, casting, welding, and glass manufacturing, workers are frequently exposed to intense heat, making accurate testing of contact heat resistance essential for ensuring safety and compliance.
GT-C101 simulates real working conditions by measuring heat transfer delay and thermal transmission under instant contact with high-temperature surfaces. Fully compliant with EN 407, EN 702, and ISO 12127-1 standards, this machine provides precise, repeatable data for manufacturers, laboratories, and research institutions. With high-temperature capability up to 500°C, advanced calorimetry, digital monitoring, and adjustable contact speed, the Heat Contact Machine GT-C101 is an indispensable tool for developing and certifying next-generation PPE and heat-insulation materials.
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