How to choose the material of waterproof casing?

Flexible waterproof casing wall concrete strength level is the same, can be poured at the same time, and vice versa it is advisable to pour column concrete first, pre-buried shear wall anchor tendons, to be removed after the column mold, and then tied shear wall reinforcement, supporting mold, pouring concrete. Cast-in-place floor, column casing through the beam in line with the completion of civil installation, before pouring concrete should be filled tightly with newspaper, straw bales and other soft things to prevent mortar into the casing and junction box caused by blockage. Flexible waterproof casing needs to penetrate the wall structure is concrete, flexible waterproof casing through the wall is generally level with the wall does not need to extend.
Waterproof casing
Definition of pre-buried flexible casing: generally used in the pipeline with vibration or in the pipeline bend out of additional use, flexible waterproof casing mainly has a casing body, pressure bar and rubber sealing ring composition, for the pipeline through the wall at the displacement of flexible waterproof casing can be very good flexible waterproof casing can compensate.
Flexible waterproof casing socket connection is the pipe or pipe fittings socket into another pipe or pipe fittings within the socket, between the socket filled with appropriate filler or coated with organic adhesives connection. Commonly used fillers are: asbestos cement, green lead, oil sisal or rubber ring, suitable for the connection of cast iron pipes, reinforced concrete pipes, etc. Pipe socket is often named after the type of filler, such as rubber ring interface, asbestos cement interface, green lead interface, etc. Flexible waterproof casing rubber ring connection: rubber ring connection belongs to the flexible interface, suitable for water supply cast iron pipe, reinforced concrete pipe, glass fiber reinforced plastic pipe and hard polyethylene pipe, etc.. Depending on the structure can be divided into two categories of slip-in and mechanical connections.
 
After the concrete wall is poured, the reinforcement thrown out of the upper opening will be sorted out and the wall surface will be leveled with a wooden trowel according to the elevation line. The construction process should be closely integrated with the civil construction, especially with the reinforcement worker to work closely, the gas cutting of reinforcement, displacement to be reported with the technician, civil engineering, the main reinforcement can not gas cutting, after the installation of the casing, the casing is stuffed with wood chips to clean up the casing later, the installation is completed in time to report the concealed material.