Grouting steel flower pipe is a pre-buried grouting steel flower pipe system, primarily used for sealing construction joints, cold joints, pipeline leakage joints, and voids in concrete ground walls. How should the grouting steel flower pipe be protected? The side mold can be removed when the concrete strength can ensure that the surface and edges will not be damaged upon mold removal.
Special hoisting equipment is used to elevate horizontal components, such as laminates, ensuring that the force at each lifting point is evenly distributed to prevent cracking due to uneven component stress. When lifting and demolding components, the concrete strength requirements should meet the planned specifications. In the absence of specific requirements in the plan, non-prestressed components should not be less than 50% of the planned standard compressive strength value of concrete cubes, while prestressed components should not be less than 75% of the planned standard compressive strength value of concrete cubes.
On the 2nd, with an average temperature below 5 degrees Celsius, no watering is required. Insulation methods should be adopted. When the air temperature cannot reach the natural curing conditions or needs to be removed prematurely, steam protection can be used. Steam protection is generally suitable for temperatures around 65 degrees Celsius. During protection, use canvas or oilcloth to cover. To prevent cracks and deformation caused by sudden changes in steam temperature, the heating and cooling rates must be strictly controlled.
Within 12 hours of casting, concrete components should be covered and preserved. The concrete should contain silicate cement, and the pouring and protection time for general silicate cement or slag silicate cement should not be less than 7 days. For retardant type or concrete mixtures with impermeability requirements, not below 14 degrees, cover the concrete with plastic sheeting for protection. All exposed surfaces should be tightly covered, and plastic sheeting should be used to retain condensation water.
