Stayform as a bulkhead for water bearing structure construction joint - corrosion concerns?

[Ronengo]

I have a contractor pushing hard to use Stayform (galvanized stay in place forms) for the base slab of a water bearing structure. The manufacturer themselves have a page dedicated to the use of Stayform as a bulkhead for mat slabs: https://amicoglobal.com/stayform-concrete-forming/projects/bulkheads/

I've already dug deep into this Stayform stuff to assess the shear friction coefficient vs the intentionally roughened surface we specified.

My question is how does the "mesh" not get corroded (first the galv coating and then the steel) and start wrecking havoc in the joint? Sure I can give direction that the Stayform needs to be held back from the formed/unformed surfaces by a cover equivalent to the reinforcement. But we waterstop these joints for a reason, and it's that water is almost surely getting into the joint.

Has anyone dug into this before? If their marketing is to be believed, this stuff has been used in USACE water bearing base slabs as far back as 1999.

 

[TRAK.Structural]

When I did this type of work in the past we would not allow stayform to be used as you describe. It was common for contractors to request it, often citing the difficulty with the roughened edge. We would sometimes omit the roughened edge requirement if shear between the pours could be justified with shear friction and a smooth joint.

 

[HTURKAK]

My question is how does the "mesh" not get corroded (first the galv coating and then the steel) a

I could not see the related detail at the link https://amicoglobal.com/stayform-concrete-forming/projects/bulkheads/ but AFAIK , it is necessary to use wooden strip at the top of and bottom of the CJ.
I have dug this in the past and my opinion is reasonable option. The water stop ( rubber or metal ) can be installed using hair pin cage.
The following doc.s gives some insight for the subject. ( Just for info)