1. Technical characteristics of RPC preparation RPC is composed of ultra-fine reactive powder, cement, high-quality fine aggregate, high-strength fiber, etc. it is a high-tech composite material combined with super fine-grained densification material and fiber-reinforced technology through optimized gradation design and high-temperature heat sealing. It has the characteristics of ultra-high strength, high toughness, high durability and high volume stability. 2. Raw materials: Cement Special mineral additives: a variety of active minerals independently developed by youlinsheng, Germany, are prepared by active combination experiments and calculation of the best particle size distribution. Aggregate: standard sand; fine quartz sand, particle size range of 0 ~ 1250 μ m, three particle sizes. Steel fiber: fine round steel fiber. High performance additives imported from Germany 3. Advantages of RPC products developed by our company: Good strength and durability index: RPC components have long service life and high durability. The durability of the structure can reach 70-100 years of service life. According to the results of 600 quick freeze-thaw tests, there is no loss of dynamic elastic modulus and mass, and the chloride permeability is less than 40 Coulomb. Ultra high mechanical properties: It has ultra-high compressive strength, flexural strength and fracture energy, and good durability. The bearing capacity is 3.5-4.0 times of that of the traditional concrete Cover Plate, and the test report issued by the state recognized testing unit is available. It has light weight and good construction performance Light weight, which is 1 / 3 of the weight of traditional concrete cover plate, can reduce the structural load and the labor cost of installation and removal. The weight of traditional concrete cover plate is 80 kg, and that of RPC Cover plate is 26 kg. RPC mixture not only has good fluidity, but also has good cohesiveness. It does not segregate during transportation, pouring and tamping. In the narrow formwork and the reinforcement gap, the passing performance is good, and there is no need to vibrate after pouring. Environmental protection of inorganic materials All the materials are inorganic materials, green and environmental protection, reducing the national building emissions to 2 / 3 of the traditional concrete cover plate. Compared with the same amount of cement production process, the CO2 emission is only about half, and the amount of non renewable natural resource aggregate in the production process is only 1 / 3 and 1 / 4 of HPC and 30MPa concrete. The appearance is standard and neat, and the construction and installation are convenient Under the same stress conditions, the thickness and mass of RPC members are about 1 / 3 of that of ordinary concrete members, so it is convenient to handle and install. Factory prefabricated parts are used for production, and the overall dimensions are regular and uniform. It can be moved and placed repeatedly without corner dropping, cracking and edge breaking. Low operation and maintenance cost The cost is slightly higher than 10% - 15% of the traditional concrete cover plate, and the loss rate during the operation and maintenance period is extremely low, which can effectively reduce the cost during the operation and maintenance period. After calculation, it can effectively reduce the maintenance cost of the traditional concrete cover plate by 25% - 35%. The specification, shape and logo of various RPC cover plates can be customized. In line with the requirements of national industrial development direction The national "Eleventh Five Year Plan" has put forward quantitative standards for energy conservation and emission reduction. The popularization and application of RPC technology is highly in line with the national requirements for building a resource-saving society and an environment-friendly society. Generally, the volume of RPC component is only about 1 / 3 of that of ordinary concrete, which can directly reduce the consumption of a large number of steel and cement when meeting the engineering application. Steel and cement belong to high pollution and high energy consumption industries. It is of great practical significance to control their application in Engineering for protecting resources and reducing pollution. 4. RPC application fields: Product field of prefabricated structure Under the condition of the same bearing capacity, the section size can be effectively reduced, the weight of the structure can be reduced, and the reasonable section form can be renewed. It is suitable for precast cover plate of electromechanical pipe trench and U-shaped groove for overpass, overpass, Urban Light Rail Viaduct and highway tunnel. Leaf segmentation line Prestressed structure The extremely high compressive strength, elastic modulus and cracking strength make full use of the strength of high-strength prestressed tendons in prestressed members, and the phenomenon of creep and shrinkage is extremely small, which makes the loss of prestress caused by the shrinkage and creep of materials in the prestressed members to the minimum. Leaf segmentation line Seismic structure The lighter structure system reduces the inertia load and the elastic deformation, and is used in the joint, so the shear resistance is enhanced. Leaf segmentation line The field of concrete filled steel tube No fiber steel pipe RPC, high compression, elastic modulus and impact toughness. The pillar of high-rise or super high-rise building can greatly reduce the cross-section size and increase the use area and beauty of the building. Leaf segmentation line Other fields It has high wear resistance and can be used for pavement and bridge deck reconstruction. High permeability, pressure pipeline and corrosive medium transmission pipeline. High impact resistance and ultra-high permeability, storage container for low and medium radioactive nuclear waste. Product Categories : Tunnel Manhole > Reactive Powder Concrete Cover
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