Can shotcrete go over mud?

[miltonmom]

Hi all,
Supposed to get shotcrete (finally) on Tuesday, but there is still some pretty muddy spots in the deep end. We've used the sump pump, but some water remains. Is that okay for them to shotcrete if it doesn't dry up by Tuesday AM?
Many thanks!

 

[HermanTX]

I would think it would be best to use a pump or shop vac to remove water so you have 3 inches of dry space below the rebar. You want the rebar in the middle of the shell. While water is applied to aid in hydration/curing, the Shotcrete is ready for water as soon as the initial set is complete, which is about 4-6 hrs after placement. So if you can ensure there is adequate space below the rebar that should allow for sufficient volume of shotcrete to be added. It shouldn't matter if it is dry or wet soil below the 3 inch gap.

 

[miltonmom]

@HermanTX - Thank you so very much! Very helpful!

 

[miltonmom]

Did your PB ask you to water the concrete after the shoot? Ours is saying that it is not necessary. Any other PBs out there would love to hear your opinions. Supposed to be 90 degrees today. Many thanks!

 

[HermanTX]

Did your PB ask you to water the concrete after the shoot? Ours is saying that it is not necessary. Any other PBs out there would love to hear your opinions. Supposed to be 90 degrees today. Many thanks!

Please read

Watering New Gunite and Concrete - Further Reading

www.troublefreepool.com