1) After all components enter the site, they should be inspected and accepted one by one according to the specifications, including appearance quality, geometric dimensions, embedded parts, reserved holes, etc. Any nonconformities found should be dealt with;.

2) All prefabricated components without lifting rings should require the manufacturer to mark the lifting points with red paint. After entering the site, it should be checked whether the lifting points are marked.

1) When there are no special requirements in the design, the PC lifting must use a steel cross arm (as shown in the diagram) for lifting;.

2) The hanging position is the design hanging point position, and cannot be adjusted or hung less than the design hanging point;.

1) Use steel bar welding double F positioning buckles (as shown in the right figure) to recheck and correct the vertical connecting steel bars, so that the prefabricated wall and connecting steel bars can be smoothly aligned with the holes;.

2) Before the initial setting of concrete, install double F positioning buckles and recheck the position of vertical steel bars;.

3) Before the installation of vertical components, a secondary review should be carried out. Any deviation should be adjusted according to the specifications, and cutting of steel bars is strictly prohibited;.

1) Is the diameter specification of the vertical longitudinal bars in the cast-in-place wall consistent with the outward connecting longitudinal bars? If it matches, use the reserved steel bars in Figure 1. If it does not match, use the embedded steel bars in Figure 2;.

2) The positioning of the extended longitudinal reinforcement should match the position of the prefabricated wall panel sleeve;.

3) The positioning of embedded steel bars should be accurate, and the position should be checked according to the requirements of Article 6;.

1) The lower four corner support pads of the prefabricated wall panel should be leveled, and the installation of the pads should be careful to avoid blocking the grouting holes and grouting connecting cavities;.

2) The prefabricated wall is lifted in place, and after adjustment is completed, the construction process of dividing and sealing the base mortar is carried out. When using the connected cavity grouting method, the length of each connected grouting area (compartment) should not exceed 1500mm, and the width of the mortar belt for dividing the compartment should be 30-50mm;.

Halfen Frimeda

1) Special tools are used for sealing the warehouse, extending 20mm into the gap as a barrier for applying sealing mortar..

2) Apply sealing mortar and then pull the baffle until it is completed;.

3) The sealing quality of the sealed mortar should meet the grouting requirements;.

1) The grouting process of vertical components must be accompanied by project management personnel;.

2) During the grouting process, it is necessary to ensure that the grouting hole can be smoothly discharged after grouting;.

3) Before implementing grouting, the grouting amount should be calculated, and the actual grouting amount must meet the requirements;.

1) The grouting material mixture is pressurized from the grouting cylinder and flows into the cavity and sleeve through the grouting hole through a conduit;.

2) When the grouting material mixture flows out of other grouting holes and grout outlets of the component without bubbles, it should be promptly sealed with rubber plugs..

1) Leakage treatment during grouting: Stop grouting and deal with the leakage area. When the leakage is severe, it is necessary to lift the prefabricated wall panel and reseal the warehouse;.

2) Post grouting leakage treatment: Conduct secondary grouting, and the pressure of the secondary grouting should be slightly lower than the pressure during grouting. When grouting, open the outlet hole near the leakage area. Select the grouting hole closest to the leakage site for grouting, seal it after the slurry flows out without bubbles, and proceed in sequence;.

1) Mix the grouting material with water and fill the grouting hole within 30 minutes;.

2) When the grouting material is no longer able to flow, it can be replenished from the grouting hole, and manual equipment combined with fine pipes should be used to grout from the grouting hole..

1) The tightening torque of the connecting bolts between the prefabricated wall and the cast-in-place wall should comply with the requirements of JGJ107-2016;.

2) The project should specify the exposed markings of bolts at each node according to design requirements for easy inspection..

1) Prefabricated walls require reserved formwork for reinforcement and penetration.