1. According to the standard construction, clean the mouth, chisel, grout, grout, joint, and compact. Of course, the foundation should also be done well. Care should be taken after the interface, and later care is also very important.
2. Plug the bitumen with bitumen blisters, apply a layer of bitumen on its surface, and then wrap it with linoleum within a certain width of the seam opening, and then apply a layer of bitumen. The highway culvert is basically handled this way.
3. It depends on whether you are a socket pipe or a flat pipe. To ensure that there is no water leakage, the same foundation must be done well. You can pour the concrete cushion first and then install the pipe. The butt joints are flat. The socket pipe should be filled with an appropriate amount of mortar at the lower mouth of the pipe to ensure that the width around the mouth is consistent. Plug seams to block the seams tightly. Branch root formwork irrigation pipe root concrete. According to the size of the tube, the base of 90 degrees Celsius is generally used. The pipe is sealed with a seal at the seam of the pipe. It is a standard operation. Only in strict accordance with the construction operation standards can the leakage be reduced. To be 100% watertight, a flexible interface must be selected, that is, a rubber strip and aprons interface used with cement pipes. The rubber ring is acquired from the supplier when the cement pipe can be purchased.