Current location - Health Preservation Learning Network - Health preserving class - Does the surrounding water have an effect on the maintenance of the newly poured floor?
Does the surrounding water have an effect on the maintenance of the newly poured floor?
Under normal circumstances, it can't be affected. Just poured concrete, the surrounding water can not be cured immediately. The concrete surface can only be cured after it has a certain strength. This time varies according to the label of concrete and admixture, usually between 6 and 24 hours.

The specific reasons are as follows:

1, concrete is a kind of hydraulic cementing material, and its solidification needs sufficient water and a certain temperature.

2. Because the surface of the newly poured concrete has not solidified, it cannot be directly soaked by water. If directly soaked, it will cause the concrete surface to dissolve.

3. The growth rate of early strength of different kinds of cement is quite different, such as portland cement and ordinary portland cement, which grow faster, such as pozzolanic cement and slag cement, which grow slower. So the start time of maintenance will be different.

4. Admixtures added to concrete will also affect the curing time, such as accelerators and retarders.

5. The volume of concrete will also affect the start time of curing. Generally speaking, the curing time of mass concrete is required earlier, because the calorific value of mass concrete is larger. If the curing time is too late, it is easy to cause cracking.

Pay attention to maintenance methods

There are many ways to maintain the cast-in-place concrete floor, which can be selected according to your own situation, mainly including film mulching, straw bag mulching, red mud surrounding maintenance and spraying maintenance solution. If you choose to cover maintenance, it is mainly to spray water to replenish water.

For example, when the straw bag is covered and maintained, it is best to water it three times a day to make it moist, so as to ensure that the concrete loses water and dries too quickly, resulting in cracks and other problems.