- Jul 22, 2013
- 84
On the rebar, if its covered w/ dirt/mud, it definitely needs brushed off with a wire brush. I also know that having the rebar really rusty isn't particularly good for the gunite/shotcrete either and may intefere with bonding/curing strength... I would consult with your gunite/shotcrete sub for their opinion on that, for sure. The rebar is also supposed to be elevated in those plastic dobies, I believe they are called, and positioned to where the rebar will set in the center of the gunite/shotcrete shell once it is sprayed.
Are you going gunite or shotcrete? Both are similar, yet different, lol. Provided the gunite crew has experienced nozzlemen, you can be assured of the proper water/mix ratio. Some swear by shotcrete because they claim it is premixed with water, and therefore better, but there is a realistic possibility of the mix going bad/setting up prematurely in transit on the way to your house.
However, from what I have read, gunite tends to have more issues with rebound than shotcrete (Basically excess mix bouncing off the walls onto the floor during shoot) Per code, it is not supposed to be used, and should be discarded. If you perform a search on here concerning the subject
(gunite rebound), you will come across posts by posters who have done gunite/shotcrete work themselves (Waste, ConcreteMan) who know a lot more about this than I do.
It is important you are aware of these things, and are able to ask educated questions to your gunite/shotcrete sub.
Are you going gunite or shotcrete? Both are similar, yet different, lol. Provided the gunite crew has experienced nozzlemen, you can be assured of the proper water/mix ratio. Some swear by shotcrete because they claim it is premixed with water, and therefore better, but there is a realistic possibility of the mix going bad/setting up prematurely in transit on the way to your house.
However, from what I have read, gunite tends to have more issues with rebound than shotcrete (Basically excess mix bouncing off the walls onto the floor during shoot) Per code, it is not supposed to be used, and should be discarded. If you perform a search on here concerning the subject
(gunite rebound), you will come across posts by posters who have done gunite/shotcrete work themselves (Waste, ConcreteMan) who know a lot more about this than I do.
It is important you are aware of these things, and are able to ask educated questions to your gunite/shotcrete sub.