Side ditch airbag spot delivery to Yichang Badong Expressway
2025-08-25 05:34:35
Our company specializes in manufacturing a wide range of high-quality rubber molds used in construction, including hollow plate airbags, prefabricated plate airbags, side groove airbags, and prefabricated hollow plate formwork. We also provide 21m octagonal prefabricated plate bridge inner molds, tunnel side ditch airbags, and the FB80 type bridge expansion joint closed water bladders. These products are widely used in road culverts, bridges, and other infrastructure projects.
Key technical parameters and construction precautions include:
(1) The inflation pressure of the Dacheng highway culvert airbag depends on the diameter of the airbag, the pressure of the new filling raft, and the ambient temperature during construction. For circular or elliptical shapes, the pressure should be maintained between 0.02 to 0.025 MPa, while for octagonal shapes, it should range from 0.015 to 0.022 MPa. The shape, spherical crown, and inverted ladder types must meet specification requirements to ensure the reserved hole size is accurate and the desired effect is achieved.
(2) The deflation time of the Dacheng highway culvert airbag is influenced by the ambient temperature during construction. Typically, after the rafting process is complete, if the surface of the airbag feels firm enough that a finger can leave a slight imprint, it is safe to deflate without causing deformation.
Before using the Dacheng beam plate core, it is essential to apply a release agent to reduce the pulling resistance. Oil should not be used as a substitute for the release agent, especially for large cores, as oil can damage the rubber and contaminate the steel reinforcement. Instead, a soapy water solution is recommended. The ratio of soap powder to water should be approximately 1:20, which provides excellent release performance.
Construction precautions for beam and plate cores include: Before placing the core into the mold, it should be inflated at ground level to check for any damage or air leaks from the previous use. This ensures the core is properly positioned and prevents quality issues during concrete pouring. Additionally, the outer surface of the Dacheng beam plate core should be evenly coated with the release agent before installation.
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