The sewer pipe may be blocked by cement during renovation. What should I do?

Rinse with water. Generally, the bigger the water flow, the better, and the longer the time. If it is an iron pipe, you can also vibrate or tap the iron pipe and wash it with water. If it doesn't work, you can cut off the cement-blocked part and replace it.

The use of 35% hydrochloric acid and a small amount of flour can play the role of corrosion inhibitor and promote the cleaning of sand cement. Pipe dredging machine breaks cement, and general high-power pipe dredging machine can make mortar blocks of about 5 cm. However, note that this method is not suitable for floor drains, pvc pipes and cast iron pipes with a long history, and it is easy to puncture the pipes.

Extended data

Matters needing attention in decoration of toilet sewer pipe

1. After the installation of the water pipe, the pressurization test must be carried out: the pressurization test is generally carried out under the condition of 1.5 times the water pressure, and there should be no water leakage during the test. A simple non-pressure testing method, but not necessarily feasible.

2. Direction of water pipe: It is suggested that it is safer for the water pipe to go up. The main reason is that most of the waterway reconstruction adopts concealed pipes, and the water is characterized by downward flow. If the pipeline is underground, once it leaks, it is difficult to find it in time. Only when water overflows Jinshan or the floor is deformed and leaks downstairs can the problem of water leakage be found, and it is difficult to find out the situation of water leakage because the water pipe is buried underground.

3. At this time, the huge loss is irreparable, even seriously affecting the friendly neighborhood; If the water pipe reaches the top, the cost of water reform may be higher, but it is worthwhile as a long-term project. Even if the water pipe leaks, it can be found in time, and the maintenance is convenient, and its loss will be relatively small.

4. Before installing the sewer pipe in the bathroom, check whether the decoration building materials, water pipes and related connecting fittings are damaged or cracked. When installing sewer pipes in toilets, the thickness of wall tiles should be considered.