How to deal with the rain on the concrete floor?

When pouring in light rain, the following measures should be taken:

1, appropriately reduce the water consumption for concrete mixing and the slump of export concrete, and appropriately reduce the water-binder ratio of concrete when necessary;

2. Strengthen the drainage in the warehouse to prevent the surrounding rainwater from flowing into the warehouse;

3. Do a good job of protecting the surface of fresh concrete, especially the joints.

How to deal with sudden rainstorm;

1. If the rain continues to flow down the concrete, the concrete will fall down, just like a handful of flour thrown into the water, it will be diluted, and the concrete without strength will be reworked in a large area in the future.

2. During pouring, in case of heavy rain and rainstorm, the material supply shall be stopped immediately, and the construction joints shall be reserved. The concrete that has been put into storage shall be covered after vibrating compaction.

3. After the rain, the accumulated water in the warehouse must be removed first, and the parts washed by the rain should be treated immediately. If the concrete can be reshaped, the joint concrete should be resurfaced and poured. Generally, concrete has been initially set. If the surface is poor, it should be chiseled and treated with higher concrete.

Extended data

Key points of concrete construction in rainy season

1) You can contact the meteorological department first and make a short-term weather forecast. Before pouring concrete, it is necessary to know the weather forecast in time and try to organize construction on sunny days. If it rains during pouring concrete, measures should be taken immediately to cover it with plastic sheets to prevent the newly poured concrete from being washed away by rain. If the project has to be concreted because of the rush, it must be covered with scaffolding.

2) In the process of concrete construction, because the concrete used is commercial concrete, it is usually required that the commercial concrete mixing station adjust the construction mixture ratio according to the moisture content of sand and gravel before opening, and strictly control the slump of commercial concrete to meet the construction requirements in rainy season. In general, pouring concrete is forbidden in heavy rain.

3) When the concrete delivered by the concrete mixing pump does not reach the initial setting, in case of rain, it should be covered with plastic sheets in time to prevent rain.