How many hours does the cement not be afraid of rain? Cement for a few hours is not afraid of water

After six hours of plastering, the cement is not afraid of rain, and the more it rains, the stronger it will become. However, if there is no rain after the cement is paved, it is necessary to carry out manual water splashing for more than seven days, and it is necessary to splash about three times a day. Second, what are the methods of cement floor maintenance?

1. Pay attention to the time of curing After the cement floor is paved, the curing time should be determined according to the condition of the growth of the compressive strength of the concrete floor, which is generally not less than 80% of the design compressive strength, and pay attention to the maintenance of the first seven days when curing the cement floor, usually 14 days in high temperature weather, and 21 days in low temperature weather. If the cement floor is not cured for enough time, the ground will crack in the later stage. 2. We all know the choice of maintenance method, the concrete floor building must be cured immediately after completion, and the various concrete floors laid by machinery must be sprayed with curing agents, and the method of moisturizing covering must be used for maintenance.

In rainy days, you can also use moisturizing film, straw bags, sacks, straw curtains and other maintenance methods, but do not use the maintenance method of surrounding water!

Generally, it will be two or three days in the cement, and it will be dry and people will be fine when they step on it. You're doing it pretty fast, but don't get in the rain until he's completely dry.

Cement for 6 hours is not afraid of water.

The cement is not afraid of rain after 6 hours. After 6 hours, if it rains, the more it rains, the more solid it will be. However, if it rains before it is completely solidified in the first 6 hours, it will affect the strength of the cement.

In fact, after pouring cement, an appropriate amount of water is needed for maintenance, especially in the case of hot weather, the temperature is relatively high, and the frequency of watering needs to be increased. You can pour more in the first two days, but you can slowly reduce it in the next few days, which also changes according to the change in the strength of the cement.

Why concrete should be watered and cured

1. After pouring concrete, the curing process is relatively long. Because it has a great impact on the quality of the concrete, after the concrete is successfully poured, the hardening and strength will continue to increase, mainly because the cement has been hydrated.

2. The occurrence of hydration needs to be under a certain temperature and humidity environment, and it is necessary to carry out reasonable maintenance by artificially and artificially create certain temperature and humidity conditions, so as to make the strength of cement continue to grow and achieve the required effect.

3. In order to ensure the strength of concrete.

Also in order to avoid the phenomenon of cracking on the surface of the concrete, watering is the most reasonable way, after pouring 12 hours at room temperature, you can continue to pour water in the cavity, and the curing period should not be less than 7 days.

4. The reason why it is necessary to keep watering is mainly because the water in the concrete is steamed quickly, which will affect the effect of solidification. If the current temperature is relatively low, below 5, it can not be watered and cured, and it can be covered with film.

After plastering the cement for six hours, you are not afraid of rain, and the more it rains at this time, the stronger it becomes. But if it doesn't rain after the cement is paved, it needs to be manually watered for more than seven days, about three times a day. Generally, you can pour it a few times in the first two days, and gradually reduce it in the next few days.

2. What are the methods of cement floor maintenance? 1.Pay attention to the curing time.

After the cement floor is paved, the curing time should be determined according to the increase in the compressive strength of the concrete floor, generally not less than 80% of the design compressive strength, and pay attention to the maintenance of the first seven days when curing the cement floor. Normally, the maintenance time for hot weather should be 14 days, and the maintenance time for low temperature weather should be 21 days. If the cement floor is not cured for enough time, the ground will crack later.

As we all know, the curing of the concrete floor must begin immediately after the completion of construction, and the various concrete floors laid by machinery must be cured by spraying curing agents, and the method of moisturizing and covering must be adopted. In rainy days, you can also use maintenance methods such as covering moisturizing film, straw bags, sacks, and straw curtains. , but don't use the maintenance method of surrounding water!

1.Does it matter if it rains 2 hours after laying cement?

Not necessarily, it needs to be judged by the size of the rain. If it's just hairy and rainy, it doesn't matter, because at this time the cement surface is generally initially solidified and will not have much impact. If it rains heavily, it is very important, because when the rainwater drops on the cement surface, the mortar layer on the cement surface will be washed away by the rainwater, and potholes will appear on the cement surface, resulting in a reduction in the strength of the cement, sanding, and affecting the overall construction quality of the cement.

If you want to solve the problem, you should sprinkle some dry cement on the surface of the cement after the rain stops and before the cement is completely solidified, and then complete the light construction of the surface. Under normal circumstances, after eight hours of cement construction, you are not afraid of rain, because the cement has completely dried and solidified.

2. What should be paid attention to in the maintenance of cement floor?

1.Maturation time.

After the construction of the cement floor is completed, it must be carefully cured for a period of time, and the specific curing time needs to be reasonably arranged according to the compressive strength of the cement floor. In general, the compressive strength of the cement floor should not be less than 80%. If it is already more than 80%, it will no longer be cured.

2.Maintenance Methods.

When carefully curing the cement floor, it is necessary to pay attention not only to the curing time, but also to the curing method. If the cement floor is mechanically paved, it is necessary to spray some curing agent on the surface of the cement floor, and it is also necessary to use moisturizing and covering methods for maintenance. In case of rain, it is necessary to lay a layer of sacks, moisturizing film, and grass curtain on the ground for protection and maintenance.