13 m 13 m circular bridge mandrel rubber balloon

 13 m circular bridge mandrel 13 m rubber balloon. I. Introduction: inflatable rubber mandrel is an expandable, cylindrical shrink bag, used to form the hollow concrete elements, in the manufacture of hollow components, put it in the middle, and filled with compressed air, when concrete After solidification, the release of compressed air bags, air bags that shrink and can be withdrawn from the core mold cavity. It is easy to use, economical and durable, not soft, inflatable can shrink any folded, curled, inflated after sufficient strength to withstand the pressure of the concrete, which is unmatched by any of the traditional rigid template. For reinforced concrete pumping holes, including piles, roof trusses, roof columns, beams, underpasses and other components, is widely used in: mining foundations, roads and bridges, construction, hydraulic engineering (dock, berth, quay). Please visit our website please call consultation: 18831813626 Second, the performance characteristics: 1, the design of scientific and rational use rubber inflatable mandrel, prefabricated or site pouring out of the finished components, can meet the design requirements, and the operation is simple, labor , save time, save material. 2, good aging resistance, long service life of the product with synthetic rubber, natural rubber and reinforcing layer made of vulcanized later. Both good anti-inflation strength and elasticity and flexibility, they are able to meet in a variety of operating conditions. 3, for a wide range of temperatures within the range of -10 ℃ ~ + 90 ℃, the material does not change. 4, the construction site for the construction of light to provide favorable conditions for stress hollow concrete structures, the use of rubber mandrel, the weight ratio of non-prestressed solid member is 20% lighter, and therefore reduce the weight of the upper structure of the building, the pile can be shortened span increases, the construction site is safe and easy. 5, the construction process is simple, safe and sanitary use rubber mandrel, with only a few simple tools, no special technology. As long as the mandrel into the negative reinforcement cage, inflatable pressure to work pressure, the pouring of concrete until the concrete when the initial setting, the mandrel deflated drawn to complete the finished molded components, do not pollute the environment. Third, the construction method: 1. Before use, first check the connectors and rolled steel reinforcement cage wire head bent toward the inner diameter direction shall avoid pricks mandrel to form an air leak. 2, first pouring of concrete reinforcement cage bottom cushion, then pull the rope to the mandrel steel cage, and a longitudinal seam side up. 3. Open the valve inflated to the required pressure to close the valve, should not exceed the pressure. 4, shaped mandrel should be alternately inflated directly to the required pressure. 5, will enter a steel cage around the mandrel up and down to be fixed. Overcome the buoyancy and move around. 6, after pouring the concrete, from both sides at the same time using a vibrating rod vibration, preventing move around the mandrel. And the vibrator section head untouchable core mold, to avoid puncture leak. 7. After the final setting of concrete, open the bleed valve, you can extract the core mold. (Ejection time customized according to the construction situation) four, custody and maintenance of: A. mandrel rinse with water after use, do not be put dry air, do not touch the oil, acid and alkali. B. scene to avoid sharp hard object use. C. balloon after ejection time, immediately brush (nylon brush is best) tap water to remove the surface of the concrete to keep the balloon surface clean. D. Core module, if any leakage, sealing off the film; in need of repairs at with grinding wheel, brushing glue patch covering film, fiber tear repair coverage at Zeyi tape.