When pouring concrete on site, it is correct for the construction personnel not to add water to the concrete at will. Why? The reasons are as follows.

1- The on-site pouring concrete has been mixed, and the cement dosage remains unchanged. If water is added, there will be more water, and the amount of cement will remain unchanged, and the water-binder ratio will increase, and the strength of concrete will not be enough.

2- It is much easier to add water to the site, which will easily lead to concrete segregation, and the isolated concrete will easily block the pump pipe. And the strength of concrete decreases.

3- When pouring concrete on site, if water is added, it will cause the secondary hydration reaction between cement and water, generate some unstable calcium carbonate substances, and reduce the strength of concrete.

The standard curing conditions of concrete are temperature of 25 2 degrees and humidity of 95%. Why do you want to sprinkle water? It is to stabilize the temperature and humidity and improve the strength of concrete in cold and hot weather. Prevent concrete from cracking due to exposure and freezing, and the strength is not enough.