的维护至关重要 Maintenance of cement pipes is essential
As a professional cement pipe production enterprise, our cement pipe products will require a period of time to be constructed in the future after leaving the factory. If the cement pipe is not properly maintained during storage, it will cause some damage. How should the mud be maintained? The editor of Shijiazhuang Zhongde Company introduces us below.
There are two methods that we are relatively familiar with, one is the cement tube steam curing method:
The first is to build a steam curing pond. The general steam curing pond needs 2.5 meters wide, 4 meters long, and 3 meters deep. It can also be scaled according to its own production volume and the size of the cement pipe mold. It also requires the boiler to be transported to the steam curing pond. The steam and steam curing ponds must be tightly sealed and can be used after the steam curing ponds are prepared. Once the cement pipes are ready, they can be hoisted into the steam curing ponds for steam curing. Generally, steam curing is required for 2.5--3.5 hours in the future. It is condensed. Generally, the higher the temperature, the shorter the time of steaming, and the time of steaming is inversely proportional to the temperature of the steam. The higher the temperature, the better
水泥管 天然维护法 Another method that we are not unfamiliar with is the natural maintenance method of cement pipes
Natural maintenance does not require steaming ponds.After the cement pipe is made on the cement pipe making machine, do not open the mold. Put the cement pipe mold and the cement pipe in the open air for natural maintenance. Generally, it takes one day after the cement pipe is finished Open-air maintenance, only to open the mold the next day.After the mold is opened, you need to perform natural maintenance for 4-6 days.A special person sprays water on the cement pipe three times a day. The time is usually once in the morning, once at noon, and once in the afternoon. The purpose of water is to adhere to the humidity of the cement pipe so that the concrete can gradually set itself, and the number of water sprays can be increased and reduced according to the climate and humidity. However, there are many cement pipe molds for natural maintenance.
Pay special attention to the following issues:
湿维护7天期间内各阶段对产品混凝土维护的影响。 Impact of wet maintenance of cement pipes on concrete maintenance of products during the 7-day period. According to the test data and production data, the 7d strength of the product concrete is about 65% to 85% of the 28d strength. Therefore, it is reasonable for the specifications to require 7 days of wet maintenance, and it is best to persist for 7 days without losing water. According to our experience, in these 7 days, the more forward the moment, the simpler the concrete is to lose water, the simpler it is to constitute a disadvantage, and the more important it is to avoid water loss. The strength of 3d is about 45% to 60% of the strength of 28d. It is especially important to avoid water loss for 3 days.
The importance of secondary smearing of concrete. The primary effects of the secondary smearing are three: one is to eliminate the external defects of the concrete and the early plastic cracks, the other is to improve the compactness of the surface of the concrete, and the third is to improve the surface compactness, which slows down the rate of moisture transfer and transpiration in the concrete, which improves. Crack resistance of concrete
If it is properly maintained, the quality of the cement pipe will have a lot of room to get used to the external environment. If it is not properly maintained, the service life of the cement pipe will be greatly shortened. When the reinforcement mesh in the cement pipe has a weak welding point, it will show tendons and exposed tendons. This will cause the pipe body to appear unreinforced. This situation will cause the unreinforced part of the cement pipe to withstand Collapse under pressure.
Therefore, in summary, Zhongde cement pipe manufacturers' claims are:
1 Pay special attention to the maintenance of cement pipes. 2 Be sure to grasp proper maintenance methods.