The concrete that was poured in the 1970 did not crack or flake off.
Pouring concrete driveway in rain.
The more rain that mixes with the semi solid concrete the more likely it is that the slab will fail.
As concrete dries one of the worst things that can happen is for rain to start falling.
The reason why builders avoid pouring concrete in rain deals with the overall strength of the concrete.
Pouring concrete in the rain can compromise its strength increasing the tendency for dusting and scaling to develop.
Was not poured in the rain.
Pour the concrete onto the existing damaged concrete in the same way and trowel to a smooth finish and hopefully there is no more rain to cause any damage.
What happens if you pour concrete in the rain.
The integrity of the slab depends on keeping the water ratio in the concrete mix low.
This is vital if you re in the early stages of a pour when the skies open.
Water is a key component of all concrete mixing with cement and causing it to hydrate and gain strength.
If possible tent the pour with tarps to keep rain from mixing with the concrete.
If it was not covered prior to the onset of the rain if the hardening was not very far along by that time and if there was enough rain falling with enough force the rain may have washed some of the cement out of the concrete.
Also lasted 40 years.
In addition to causing pits in the surface of the concrete when the raindrops hit it rain falling on uncured concrete can change the water cement ratio in the concrete s top layer.
If water gets in the cracks and freezes over there will probably be problems.
But after freshly mixed concrete has been placed water in the form of a driving rain can do much more harm than good.
Unpredictable summer thunderstorms can wreak havoc on a concrete pour.
The biggest problem you may be faced with is the effect the rain may have had on the surface of the concrete.
Rainwater can cause a new concrete surface to become soft which in turn decreases the abrasion resistance and strength of the concrete while increasing the tendency for dusting and cracking to develop.
Pouring concrete vs pouring rain.