I do know that salt degrades concrete,in one of those situations where you have to "kill" your hopper do you think salt will work?

On your next pour take a 5 gal bucket,fill with mud and try it therory out.

I shall...........

In my opinion i don't think it will. Sugar yes, in the old days i remember spilling a mountain dew on the mud whille trowling edges in so FL ,and man it would leave a hole. in MN they use calcium chloride for an add mixure. Chloride is a main ingredient in salt.

True Brian I am thinking of salt as being an accelerator.

Calcium Chloride is an accelerator in concrete.  IE: A Cataylyst.  (Remember your high School Chemistry?)  Cement is a Calcium Silicate compound made from Limestone: http://en.wikipedia.org/wiki/Portland_cement

salt/sodium chloride is very abundant in our bodily fluids,doesn't too much salt in your diet make you retain fluid?

I was told that concrete hardens quicker in salt water.

Salt will make it hydrate ..get hard quicker, sugar will kill it, bentonite will keep it from clumping together, it's clay..salt lol do that and your shit will flash reL quick