Concrete is a common material in the construction process, and it needs to reach a certain strength before it can be used after construction. So, how long does it take for the concrete strength to reach 75%? What are the quality requirements for concrete pouring?

How long does it take for concrete strength to reach 75%

It takes about a week to achieve this strength. Concrete only needs to be constructed according to the specified requirements and maintained after construction. Basically, after three days, its compressive strength can reach 50%, one week it can reach 70% to 80%, and after 28 days it can reach 100% or even higher.

Quality requirements for concrete during pouring

1.When using concrete, it is necessary to meet certain requirements in terms of strength. The appropriate strength of concrete should be selected according to the actual situation. If you want to choose C30 concrete, the strength of concrete needs to reach the standard of 30.

2. The appearance quality of concrete needs to meet certain requirements, and there should be no obvious honeycomb or pockmarks. The surface should be kept in a flat state without too many depressions.

3. In terms of body shape, it also needs to meet certain requirements, especially in terms of the main body, and there should be no obvious deviation from the model.

Does the smaller the slump of concrete, the thinner it becomes

No, that doesn't mean it's thinner, because if it's too thin concrete, it will experience flow and other phenomena, which reduces the slump. However, it is not entirely possible to follow this method, and the specific assessment needs to be based on the on-site situation, such as the quality of concrete and the surrounding construction environment.