Copper-coated micro wire steel fiber is an important part of Reactive Powder Concrete (RPC). RPC is a new material with ultra-high strength, high toughness, high durability and good volume stability. It is a high-tech concrete composed of DSP (Densified System Containing Ultra-fine Particles) materials and fiber-reinforced materials. According to its composition and heat treatment method, the compressive strength of this concrete can reach 200MPa to 800MPa; the tensile strength can reach 20MPa to 50MPa; the elastic modulus is 40Gpa to 60Gpa; It is 250 times more solidified, which is comparable to metal aluminum; the chloride ion permeability is 1/25 of high-strength concrete, and the anti-penetration ability is extremely strong; after 300 rapid freeze-thaw cycles, the sample is not damaged, and the durability factor is as high as 100%; The ratio of flexural strength to self-weight of prestressed reactive powder concrete beams is close to that of steel beams. The application of RPC in engineering structures can solve the shortcomings of current high-strength and high-performance concrete such as insufficient tensile strength, high brittleness, and poor volume stability. It can also solve the problems of high investment, poor fire resistance, and easy corrosion of steel structures. .
From the perspective of engineering application, reactive powder concrete has the following advantages:
1.RPC can effectively reduce the weight of structures. PC has high compressive strength and shear strength, and can adopt thinner sections or innovative
The novel cross-sectional shape makes the structure much lighter than ordinary concrete structures. 2. It can greatly improve the durability of structures. The RPC material reduces the thickness and range of the interfacial transition zone. The reduction of the particle size of the aggregate reduces the probability of its own defects, and the defects of the entire matrix are also reduced. RPC is very dense and has extremely low porosity. It can not only prevent the leakage of radioactive substances from the inside, but also resist the corrosion of external aggressive media, which improves the uniformity, strength and durability of the system as a whole.
2.The components designed by RPC can greatly reduce the amount of tendons and stress tendons, and even do not need to set stirrups.
Uses and parameters:
Copper plated micro wire steel fibers are mainly used in high-speed railways, RPC cover plates and important engineering components. The fiber diameter is 0.2-0.25 mm, the length is 13 mm, and the tensile strength is >2850MPA. It has high strength, tensile strength, wear resistance, Crack resistance, bending resistance, demolition resistance, impact resistance and other properties. Implement JG/T3064-1999 “Steel Fiber Concrete” YB/T151-1999 “Steel Fiber for Concrete” ASTM A820-96 “Steel Fiber for Fiber Concrete” standard.
Packing: Carton or paper-plastic composite bag, 20kg/box or bag, or according to customer requirements.
Post time: Jul-20-2023