Calcium Chloride in Reinforced Concrete
Calcium Chloride in Reinforced Concrete
(OP)
I posted this on the Concrete Admixture forum also, I'm trying to help out a GC who called me in sort of a panic that his concrete contractor had used 1% Calcium Chloride in the piers for a pre-engineered building. He did this, unbeknownst to the GC, to accelerate the concrete set as he had to repour the piers because they were poured at the wrong height the first time. Obviously, the 3/4" dia anchor bolts will have both tension and shear forces (I don't have the numbers yet.) I have thought about using a penetrating corrosion inhibitor, but I am not sure if this is overkill or not. (I have used that remediation process on prestressed concrete parking garages.)
Can anyone point me to a reference or give me an idea of what extent of corrosion we may be looking at? Possibly a percentage of steel lost vs time?
Thanks.
Can anyone point me to a reference or give me an idea of what extent of corrosion we may be looking at? Possibly a percentage of steel lost vs time?
Thanks.






RE: Calcium Chloride in Reinforced Concrete
http://www.sikaconstruction.com/con/con-tcm.htm
perhaps one of their products might help or they may be able to help you decide if their products can help.
MasterBuilders, or whatever they are calling themselves today, has similar products that might help.
RE: Calcium Chloride in Reinforced Concrete
ftp://imgs.ebuild.com/woc/J980869.pdf
... but...
based on the experiences of others, 1% concentration "may" not be a big problem, under certain conditions...
ftp://imgs.ebuild.com/woc/C00C076.pdf
(this link is for residential work, but does mention embeds - not just rebar)
Not the most definitive "proof", for your GC, but seems to be about as good as it gets.
www.SlideRuleEra.net