It is based on the principle of large compactness, remove coarse aggregate, adopt fine sand with large particle size of 630μm as aggregate, made of cement, ground fine quartz powder, silica fume and efficient water reducer supplemented by appropriate curing system. Due to the increased fineness and Reactive activity of the components, it is called RPC.
As an important member of the UHPC family , its ultra-high Performance Concrete is manifested in two aspects: ultra-high mechanical properties and ultra-high durability.
RPC-100 fiber reinforced active powder concrete tunnel bridge cable trough cover plate is composed of ultra-fine active powder, cement, high-quality fine aggregate, high-strength fiber and other components, through optimized gradation design, through high temperature thermal bonding and other special processes, it is a high-tech composite material combining ultra-fine particle polymer and fiber reinforcement technology. High strength, high toughness, high durability and high volume stability. RPC components have long service life and high durability. The results of 600 times of fast antifreeze and thawing experiments show that the dynamic elastic modulus has no loss, the mass has no loss, and the permeability of chloride ion is less than 40 coulombs.
The outline of the national "eleventh five-year plan" puts forward quantitative standards for energy conservation and emission reduction. The promotion and application of RPC technology highly conforms to the country's requirements for building a resource-saving society and an environment-friendly society.
Generally speaking, the volume of RPC components is only about 1/3 of that of ordinary concrete, which can directly reduce the consumption of a large amount of steel and cement when meeting the requirements of engineering application. However, steel and cement are industries with high pollution and high energy consumption, so controlling their application in engineering is of great practical significance for protecting resources and reducing pollution.
Cable trench cover plate of many raw materials, steel fiber is relatively thick, construction or maintenance is not convenient, but the price is the cheapest. Regenerated resin and polymer base complex, poor temperature resistance, winter brittle, summer easy to swell, suitable for poor use, use life is short, higher than steel fiber concrete. In cable trench cover mainly using the unsaturated resin, glass fiber chopped, filament, plus some padding, matched with steel skeleton, the product function stability, strong heat-resistant, resistant to acid and alkali, compression, bending, impact resistant, flame retardant, the price is relatively than the steel fiber reinforced concrete and the regeneration of resin, polymer based composites is high, but from the use fixed number of year, from product features such as high performance-price ratio.
1. Good anti-theft performance:
The cable trench cover is made of polymer composite material. Made by high temperature molding, it has the characteristics of natural anti-theft because it has no secondary utilization value.
2, convenient and beautiful:
With the standard product weight is only one third of the cast iron cover plate, which brings great convenience to the installation, inspection and maintenance, and according to customer requirements to produce a variety of standard and color products, even in management, and beautify the city.
3. Long life:
Not afraid of acid and alkali corrosion, rust, electrical insulation, wear resistance, weather resistance.
4. High precision:
Due to the high temperature molding of the cable trench cover plate, cover seat joint gap is small, to overcome the cast iron, cement cable trench cover plate "run, jump, ring" and other problems, widely used in new plants, distribution rooms of the cable trench cover plate.