The maintenance of bridge expansion joints may be unfamiliar to many people. If the word maintenance is changed, it will be better understood, that is, the protection of the final construction. Zhong Da Consulting will briefly introduce the health care of bridge expansion joints for your reference only.

After the initial setting of concrete, the concrete surface should be covered with sacks for water conservation to keep the concrete moist. The curing time shall not be less than 15d. During the maintenance period, traffic control should be carried out by special personnel, and protective or sealing measures should be taken. Instructions and warning signs should be set on both sides of the bridge, and vehicles and pedestrians are strictly prohibited. Only after the concrete strength on both sides of the expansion device meets the design requirements can the traffic be opened.

Install rubber strip.

After the curing, the rubber strip can only be installed after the concrete reaches 50% of the design strength.

quality management

During the construction of expansion joints, careful self-inspection and random inspection shall be carried out for the construction of each working procedure, such as seam cutting, slotting, steel bar installation and concrete pouring, and the next working procedure can only be carried out after the acceptance. At the same time, the whole process of important processes such as steel bar installation and concrete pouring is controlled.

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