Does heavy rain have an effect on the strength of the concrete when pouring the foundation concrete?

Influential. 1. After pouring, heavy rain will wash away the concrete, resulting in the cement being washed away. Concrete marking.

Reduced or completely lost bearing capacity (what remains after scouring is stones and rebar, which cannot form a unified whole without gelling agent, and is scattered).

2. Heavy rain will lead to anti-sand and stone leakage on the pouring surface, which will affect the appearance, acceptance and quality.

3. Pay close attention to weather changes when pouring concrete, avoid pouring in rainy weather and do a good job of construction protection measures in the rainy season.

4. In addition, light rain has no effect on this; In moderate rain, it is recommended to cover with film to avoid the cement slurry from flowing away and affecting the strength of the subsequent concrete; Heavy rain, it is recommended that concrete pouring should not be carried out, which directly affects the strength of concrete; After the rain, the construction will be carried out.

Influencing factors

In general, the water-cement ratio.

Inversely proportional to the strength of concrete, when the water-cement ratio remains unchanged, it is wrong to increase the amount of cement to improve the strength of concrete, and at this time it can only increase the workability of concrete (referring to the fact that the freshly mixed cement concrete is easy to be operated in various processes (mixing, transportation, pouring, tamping, etc.) and can obtain uniform quality and dense forming, which means fluidity, cohesion and water retention. It is also called the workability of concrete), which increases the shrinkage and deformation of concrete.

The above content refers to: Encyclopedia - Concrete Strength Grade.

Does continuous rain after three days of concrete pouring have an impact on the strength of the structure?

Does the continuous rain after three days of concrete pouring have an impact on the structural strength: if the concrete is initially set, there is no big impact when it rains, the concrete has no initial setting, it should be covered when it rains, and measures should be taken to drain the water on the formwork, otherwise it will affect the strength of the concrete. In addition, if the thickness of the concrete is very thick, the rain may affect the surface temperature of the concrete for several days, resulting in temperature difference cracks, the concrete is not thick, and it is no problem to rain after condensation, which is equivalent to curing.

Summary. 3. Generally, if the concrete is initially set, there is no big impact when it rains, the concrete has no initial setting, it should be covered when it rains, and measures should be taken to drain the water on the formwork, otherwise it will affect the strength of the concrete.

It rains immediately after the commercial concrete floor is poured, which has no impact on the quality of the concrete.

Kiss! This has an impact!

1. After pouring, the rain will wash the concrete, resulting in the cement being washed away. Heavy rain will lead to anti-sand and stone leakage on the simple pouring surface, which will affect the appearance, acceptance and quality.

2. Concrete material is a durable material, but it is essentially a non-uniform porous material, under the erosion of carbon dioxide, water, chloride ions, sulfates, etc., it is inevitable that the resistance to shooting is affected by external factors and corrosion, and the concrete will accelerate the destruction and greatly shorten the service life.

3. If the general concrete ligand is initially set, there is no big influence when it rains, the concrete is not initially set, it should be covered when it rains, and measures should be taken to discharge the water on the formwork, otherwise it will affect the strength of the concrete.

4. The problem of light rain is not big, and the concrete old silver imitation is covered immediately, and there will be a problem with heavy rain, which will definitely cause the surface to run out of slurry, produce exposed stones, and seriously reduce the strength of the surface layer.

Kiss! Here are two ways! 1. Heavy rain will lead to anti-sand and rotten foundation on the pouring surface, which will affect the appearance, acceptance and quality. When pouring concrete, it is necessary to pay close attention to weather changes, avoid rainy weather and do a good job in the rainy season construction branch protection measures.

Not anymore! Thank you.

I just finished pouring and it rained in 30 minutes, will it affect the hardness?

It will have an impact!

2. In addition, light rain has no effect on this; In moderate rain, it is recommended to use a film macro rental car to cover it to avoid the cement slurry flowing away and affecting the subsequent concrete strength; Heavy rain next to the type, it is recommended that concrete pouring should not be carried out, which directly affects the strength of the concrete sheltering soil; After the rain, the construction will be carried out.

Mine was poured, stopped to eat, and it rained.

Kiss! It's okay! As long as it's not the next day or the whole night! The impact won't be huge!

After you stopped for an hour, I covered it with film, and it turned out to be really <> a day and a night

Kiss! That's fine!

Thankfully, you took measures in time.

Light rain can be done when pouring concrete, and construction can also be done in moderate rain, but rainproof measures should be taken, and the film should be covered in time after plastering. Heavy rain and heavy rain cannot be constructed, which affects the strength and apparent quality of the concrete surface. Job Conditions:

1. The foreman has carried out comprehensive construction technical training for the operation team according to the construction plan, and the concrete pouring application has been approved.

2. Cement, sand, stone and admixtures have been inspected to meet the requirements of relevant standards, and the laboratory has issued a notice of concrete mix ratio.

3. The bending frame and horse road used for pouring concrete have been erected and passed the inspection.

4. The scale (or automatic Shangzhou material system) is accurately measured by the posture inspection and verification, and the vibrator (rod) is qualified after inspection and trial operation.

5. The formwork, steel bars, embedded parts and pipelines of the pouring concrete layer have all been installed, and the design requirements are met after inspection, and the hidden and pre-inspection procedures have been completed.

There will be an impact. After pouring, heavy rain will wash away the concrete. Heavy rain will cause sand backing and stone leakage on the pouring surface, which will affect the appearance, acceptance and quality.

Concrete material is a durable material, but it is essentially a non-uniform porous material, under the erosion of carbon dioxide, water, chloride ions, sulfate and other media, it is inevitable to be affected by external factors and corroded, concrete will accelerate the damage, and the service life is greatly shortened.

After pouring it immediately rains, light rain is not a big problem, immediately carry out the concrete covering work, heavy rain will be a problem, it will definitely cause the surface to run out of slurry, produce exposed stones, and the strength of the surface layer will be seriously reduced.

It doesn't matter if it's raining lightly, if it's heavy rain, you should be covered with mulch.

As long as you don't run out of pulp, there is no problem.

1. Xiaoyu generally has no effect on filial piety; 2. In moderate rain, it is recommended to cover it with a thin film to avoid the cement slurry from flowing away and affecting the strength of the subsequent mixed concrete; 3. Heavy rain, it is recommended that concrete pouring should not be carried out, which directly affects the strength of concrete; After the rain, the construction of the clever cavity stove will be carried out.

1. If the construction continues, the rainwater flows down the concreteWhen the concrete is poured down, it is 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 the pouring process, in case of heavy rain and heavy rainThe feeding should be stopped immediately, the construction joints should be left behind, and the concrete that has been put into the warehouse should be vibrated and compacted and covered.

3. After the rain, the water in the warehouse must be eliminated firstThe parts washed by the rain should be treated immediately, if the concrete can also be reshaped, the joint concrete should be paved and continue to pour, generally the concrete has been initially set, if the surface is very poor, it is necessary to carry out chiseling, and use the high No. 1 concrete treatment.

The construction in the rainy season should do a good job of the next shirt column

1. The sand and gravel silo should be drained smoothly.

2. The means of transport should have rainproof and anti-skid measures.

3. The pouring warehouse surface should have rainproof measures and be equipped with impervious covering materials.

4. Increase the number of aggregate moisture content measurements, and adjust the mixing water consumption in time.

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

1. Appropriately reduce the water consumption of concrete mixing and the slump of concrete at the outlet of the machine, and appropriately reduce the water-glue ratio of concrete if necessary;

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

3. Do the protection of the newly poured concrete surface, especially the joints.