What Can Happen If It Rains On New Concrete In Imperial Beach?
Concrete that has not been adequately cured can be damaged by rain. When the surface of a new concrete slab is exposed to precipitation, several things can happen that negatively affect its strength and durability.
- Rainwater droplets that land on uncured concrete can cause etching or discoloration of the surface due to chemical reactions between the water and minerals in the cement. In addition, when heavy rain falls on an unprotected concrete slab, it can strip away the top layer, causing greater vulnerability to staining or cracking over time.
- When it rains heavily on a new concrete slab, water can pool up and create moist pockets beneath the surface which can lead to cracking as the water evaporates. This is a particular concern for sloped surfaces or in locations that don’t have proper drainage, such as near gutters and downspouts.
- When the top layer of the slab becomes saturated with water, it weakens the overall strength of the concrete and can lead to crumbling, cracking, and shifting over time.
- Rainwater combined with alkalis in cement can cause what is known as ‘alkali-aggregate reaction’ which causes expansion and cracking of the concrete. This is more prevalent when certain types of aggregates are used in combination with certain cement formulations.
- Unprotected concrete can become a breeding ground for mildew, mold and other microorganisms due to moisture buildup if it rains on new concrete. This not only affects the appearance of the concrete but can also weaken its structure over time.
FAQ’s
Should I Cover Newly Poured Concrete If It Rains?
Yes, it is always recommended to cover newly poured concrete with plastic or a tarp if rain is expected in order to protect it from damage.
How Long After Pouring Concrete Is Rain OK?
It is best to wait at least 48 hours after pouring concrete before exposing it to rain. In areas with a high water table or heavy precipitation, the curing period should be extended significantly longer.
Can You Pour Concrete With A Chance Of Rain?
Yes, you can pour concrete with a chance of rain as long as the area is well-protected and the risk of damage is minimized. It is important to be aware of the forecasted weather conditions and have adequate protection in place before pouring concrete.
Conclusion
It is always best to avoid pouring concrete when rain is expected, however if it can not be avoided, proper protection must be used in order to reduce the risk of damage. For more information, contact Concrete Contractor Imperial Beach at (619) 414-1918.
