Nowadays, many rural self-built houses have yards, and concrete floors will be poured in the yards. However, many people do not understand the maintenance of cement floors. So, should the cement floor be watered after completion? Next, let's listen to what the old bricklayer says! As we all know, housing prices in cities are very expensive now, and it is difficult for many farmers who work in cities to afford houses, so most farmers will go back to their hometown to build their own houses after making money in cities. Nowadays, when building houses in many rural areas, they will make concrete floors in the yard. Many people are not clear about the related matters of cement ground maintenance. Then, should the cement ground be watered and maintained after completion?

First, do you want to water the cement floor after completion?

The maintenance of concrete is the longest in the whole project, which also affects the quality of concrete. The reason why concrete can gradually harden and increase its strength is the result of cement hydration, which requires certain temperature and humidity conditions. Therefore, concrete curing artificially creates certain humidity and temperature conditions, which makes the newly poured concrete normal or accelerates its hardening and strength growth.

In order to maintain the strength of concrete and prevent concrete from cracking due to dry surface, it is necessary to maintain it, and watering is one of the natural curing methods of concrete. At room temperature, it must be covered with heat preservation and curing within 12 days after concrete pouring, and ordinary cement shall not be less than 7 days. If the water conservation of concrete is neglected, on the one hand, it will reduce the strength of concrete, on the other hand, it will be too late to replenish water during the hardening of concrete, resulting in a large number of water shortages and cracks.

Concrete will release heat during solidification, which will affect the stability of concrete structure. If the moisture in concrete evaporates too fast, it will affect the solidification effect of concrete, so concrete maintenance needs watering. However, water curing of concrete is also conditional. If the temperature is lower than 4 degrees Celsius, the concrete can't be watered and cured, because the water evaporates slowly at low temperature, and even the water becomes solid, which is not easy to evaporate.

Most of the concrete used for building houses in rural areas is mixed with a concrete mixer, and workers mix raw materials by their long-term work experience. Although the quality of the produced concrete meets the requirements, if the concrete used is only poured without maintenance, the quality of the built house can certainly not be guaranteed. No matter what season the house is built, the concrete needs to be maintained.

Second, how to carry out cement maintenance?

First of all, according to different cement additives, the time of water spraying curing will be different. Generally, it takes about a week for ordinary portland cement to be cured by water spraying, but for cement with impermeability requirements or mixed with retarding materials, the water spraying curing time should be more than two weeks.

After concrete pouring, it must be covered within 12, and sawdust, plastic sheets and straw curtains can be used. This can prevent the evaporation of water on the concrete surface and reduce the concrete falling off and deformation. At the same time, sprinkler maintenance should be moderate, and the time should not be too short or too long. Too short a time can not achieve the effect of water spraying curing, and too long a time will cause irreversible shrinkage of cement to become larger, but it is easy to crack.

Do not eat heavy water or spray water intermittently when spraying water for maintenance. Because it is easy to cause sudden change of cement temperature difference, it is easy to cause cement cracking. Just a little water poured slowly.

Third, the longer the water curing time of concrete, the better?

The longer the water curing time, the higher the hydration degree of cement and the greater the irreversible shrinkage of cement. If all cement particles are hydrated, the cement gel generated by them will not only improve the strength of concrete, but also cause great shrinkage, which will cause concrete cracking in severe cases. Like aggregate in concrete, a certain amount of unhydrated cement particles or other inert substances are needed to stabilize the volume. Therefore, the longer the water curing time, the better. Blindly extend the water saving time? Strengthen maintenance? The practice is obviously wrong. What does the progress and development of modern cement concrete technology need? Just in time. Save water.

? Just in time. The length of curing time is related to many factors, such as the choice of composition materials, concrete mixture ratio, environmental temperature and humidity, anemometer curing method and so on. The lower the water-binder ratio of concrete, the more it is necessary to strengthen the supply of external supplementary water in time, but the time for watering and curing can be shortened appropriately; When the water-binder ratio is high, there is more free water in concrete. If the concrete is located in an area with high relative humidity, the influence of wet curing is not great, but its curing time is relatively long to make its permeability stable. If the water-binder ratio is large, but it is in a relative humidity area, wet curing should not be underestimated and the curing time should not be shortened.

The above article is all that I have compiled for you about whether the cement floor should be watered and maintained, hoping to bring you some reference value. From this, we can easily see that the cement floor needs to be watered after it is finished, and the process of watering maintenance has certain standards, which does not mean that the longer the watering maintenance, the better.