Aramid fiber dispenser precautions and storage

The aramid fiber cloth reinforcement concrete construction method refers to the aramid cloth soaked with supporting resin pasted on the surface of the concrete structure, and the original component is jointly stressed, so as to improve the performance of the component to a greater extent. The reinforcement of aramid fiber cloth has the characteristics of strong impact resistance, good dynamic load fatigue resistance, corrosion resistance, non-conductivity, etc. It is also one of the common methods for strengthening and repairing concrete structures. The main materials for strengthening aramid fabric are aramid fiber fabric and matching resin. There are three basic methods for strengthening aramid fiber cloth, namely, shear reinforcement, ductility reinforcement and flexure reinforcement. Shear reinforcement and ductility reinforcement are to attach arylon cloth to the surface of concrete member in the direction perpendicular to the member, and to jointly bear the shear force with the steel bar, so as to improve the shear resistance and ductility of the member. Flexural reinforcement refers to the aramid cloth is pasted on the surface of the concrete member in the direction parallel to the member, and the steel bar bears the tension together, so as to improve the flexural resistance of the member. 1. Obstacles on the construction site should be cleaned and tidy to facilitate construction. 2, the concrete structure and the surface of the material are clean, to ensure that there is no floating, rust, oil, etc. 3, the construction site is dry and ventilated, and the temperature is above -5℃. 4, do not allow open construction in rainy days. 1, Paste aramid fiber cloth must meet the design requirements and reinforcement industry construction specifications. 2, the general project: (1) For the diameter of 10mm above 30mm below the empty drum, less than 10 per square meter, that is qualified. (2) If it is more than 10 per square meter, it is unqualified and should be repaired immediately. (3) If there is an empty drum with a diameter of more than 30mm, it is unqualified and should be repaired immediately. (1) Safety matters (1) The construction site should be equipped with a variety of necessary fire extinguishers, fire buckets, shovels, hooks, shovels and other fire appliances for protection. (2) Establish a fire license system for open fire application, prohibit smoking on the construction site, and control the source of fire. (3) In the danger area, two protective railings should be set up at the edge, and red sign lights should be set up at night. (2) Before construction, the operator should wear work clothes, wear protective masks, protective glasses, etc. (C) During the construction process, if the glue is accidentally stuck to the skin, use acetone or alcohol to clean. If you enter the glasses, wash them immediately and seek medical attention immediately. (4)1. Ensure that the construction site is clean and tidy to facilitate construction. 2, according to the design requirements of the release of aramid cloth paste position line points, site technicians check the correct, before construction. 3. Before pasting aramid cloth, it is necessary to ensure that the concrete structural surface is clean and dust free. 4, configuration of impregnating resin (1) in strict accordance with the supporting resin of the main agent, curing agent mass ratio 2:1 weighing, into the container, stirring evenly with a blender, mixing process to avoid air into the formation of bubbles. (2) The glue is used to avoid unnecessary waste. If the glue is not used up at one time, it should be re-sealed and stored. 5, the concrete surface leveling (1) to ensure that the temperature above -5℃, relative humidity is less than 85%. (2) If sandpaper is used to smooth, the corner should be repaired to a radius of not less than 30mm arc. 6, paste aramid fiber cloth (1) Before pasting, according to the design requirements with steel ruler and wallpaper knife cutting aramid cloth, should be cut on the day can be used up to avoid waste. (2) Before pasting, ensure that the pasting surface is clean. (3) Ensure that the temperature is above -10 ° C and the relative humidity is greater than 85%. (4) The glue should be evenly applied on the surface of the component to be pasted, the glue thickness is 1-3mm, the middle is thick, and the two sides are thin. (5) The degree of bonding between aramid fabric and concrete directly affects the reinforcement effect. Make sure that the impregnated resin is completely soaked into the aramid cloth after all gluing, roll it several times along the fiber direction to squeeze out air bubbles. 7, surface protection: if the fireproof layer is painted, it should be carried out after the initial curing of the resin, and comply with the construction regulations. Six, arlon fiber cloth packaging specifications, storage, transportation packaging specifications This product length is 100±1.5mm thickness: 0.193mm, 0.286mm, 0.430mm, 0.572mm wide can be customized according to requirements. Storage 1, this product should be stored in a dry, cool, ventilated environment, as far as possible to avoid rain or exposure to the sun. 2, it is strictly prohibited to attach dust to the surface of the aramid fiber cloth. 3, it is strictly prohibited to twist or bend the aramid fiber cloth in various forms, which will greatly reduce the performance of the aramid fiber cloth and affect the quality. Transportation This product is non-toxic environmental protection, green products, the transportation process should ensure that the fiber is not bent, strictly prohibited rain or exposure to the sun.