| Octagonal bridge rubber internal mold building core mold |
Hengshui Zhengda Rubber Factory is a professional manufacturer of bridge rubber inflatable core mold. It is a professional manufacturer with reliable quality, reasonable price, complete specifications and various models. It is a national registered manufacturer, and it is a large and trustworthy manufacturer with national standard technology processing and customization.
Construction Technology of Octagonal Inflatable Rubber Core Mold
1. Molding
(1) Before the core mold is put into the mold, the air must be inflated on the ground to check whether the core mold is damaged and leaked during the last construction, so as to ensure that the core mold pulled in is in good condition, so as to avoid potential quality hazards in the process of pouring concrete.
(2) After the concrete pouring at the bottom of the plate beam is completed, the octagonal inflatable rubber core mold is pulled by the rope into the reinforcement cage. The core mold is large, and it winch is used to pull it pulley Guidance. The binding core mold must be made of white Zong rope, and the steel wire rope shall not be used to directly contact the air mold, so as to avoid damage to the core mold of the prefabricated hollow plate.
(3) When inserting the octagonal inflatable rubber core mold, the longitudinal interface of the outer sleeve should be placed upward to reduce the friction between the outer sleeve and the concrete when pulling.
(4) The length of the octagonal inflatable rubber core mold is 50cm longer than the plate beam, and the two ends are 25cm long respectively. After the hollow plate inflatable core mold is in place and inflated, it can ensure the secret chamber of the seam at the intersection of the plate beam end mold, so as to avoid slurry running and leakage during the concrete pouring process, which will cause trouble to the construction.
2. Fixation of octagonal inflatable rubber core mold
In order to ensure that the protective layer of the plate beam reinforcement and the size of the plate beam cavity meet the design and specification requirements, and avoid the inflatable core mold floating up during the concrete pouring process, the positioning hoop reinforcement is used for fixation, with a spacing of 50cm. The positioning reinforcement is firmly welded with the plate beam reinforcement, and the inner diameter of the positioning steel reinforcement is the same as the size of the cavity.
3. Inflation of octagonal inflatable rubber core mold
(1) After the inflatable core mold is in place, open the air inlet valve , using Air compressor inflation. For inflation Pressure gauge Control and monitor the air pressure. The inflation pressure of the core mold is determined according to the model. When the air pressure reaches the service pressure, close the air valve and stop inflation.
(2) Pay attention not to overpressure when filling the core mold.
(3) The octagonal inflatable rubber core mold shall be tested for inflation before the first use, and the sufficient time for each set to reach the service pressure shall be measured. The number of air compressors required shall be determined according to the initial setting time of the concrete, so as to ensure that the vertical ribs of the slab beam and the upper concrete start pouring before the initial setting of the lower concrete to avoid causing Construction joint So as to ensure the integrity of each slab beam concrete.
According to the field test, 6m3/min air compressor is used for inflation. The inflation time of each set of core mold is 15~20min, and the inflation pressure is required to be 0.02MPa. The time required is short, which has little impact on the formation of concrete construction joints.
4. Concrete pouring
(1) Because of the high grade concrete used in this project, retarder is added into the concrete, and the initial setting time is up to 8h, so that there is sufficient time to complete the process of erecting the core formwork, binding the negative reinforcement of the plate beam and other processes before the initial setting of the concrete at the lower part of the plate beam.
(2) When pouring the concrete on both sides of the core mold, pay attention to the symmetrical vibration from both sides to prevent the core mold from moving left and right. Do not touch the core mold during vibration to avoid damage.
5. Remove the octagonal inflatable rubber core mold
(1) After the final setting of concrete, open the valve to vent, and then the core mold can be extracted from the plate beam.
(2) The extraction time of the inflatable core mold depends on the water cement ratio, cement grade and ambient temperature. During construction, it is necessary to observe at any time and extract the octagonal inflatable rubber core mold at the right time. If the time is too early, the upper concrete will sink, resulting in concrete quality defects. If the time is too late, it is not easy to pull out, and the core mold will be damaged.
After years of production and marketing experience, the products provided by our company are described as follows:
- one The rubber air bag is an inflatable product, which is easy to use and remove after use, saving labor time and labor cost, and reducing work intensity.
two The rubber air bags produced by our factory have a high rate of return on investment, and each air bag can be used repeatedly 70-80 Second, save cost input. Our factory has many years of production experience. All the supplied products have passed the pressure measurement and side leakage test to ensure the product quality and pay attention to the company and brand image.
3. The rubber air bag has been proved by many engineering construction practices that the rubber air bag hole drawing process equipment is simple, which not only saves materials, but also has the characteristics of changeable shapes, which can form round, oval, rectangular, arch, octagon, trapezoid and other apertures. It can also be made into straight holes and variable cross-section faces (positive and oblique), which can make the building structure become light and thin-walled hollow beams and slabs.
four The rubber air bags produced by our factory are all made of natural rubber and synthetic rubber to ensure the stable quality of the products. For this reason, our factory provides high-quality after-sales service, customer return visit, customer technical problem solving, and even sends workers to the customer's construction site for guidance. It is the buyer's worry free. With a more favorable price to bring you higher quality!
