Concrete Cover for Water Tight Concrete
Concrete Cover for Water Tight Concrete
(OP)
Hi everyone,
Does anyone know whether ACI has any provisions for concrete cover for water tight concrete? Section 7.7 of ACI provides for concrete protection for reinforcement in cast-in-place concrete and precast concrete. Section 7.7.5 also provides for corrosive environment. But how about water tight concrete? Is there a specific provision for that.
I am doing a review of some notes for drawings, and there seems to a set of concrete cover for water tight concrete, that seem to be slightly more stringent than ACI's concrete protection for reinforcement. (generally, about 1/2 an inch more than ACI's, but sometimes similar to ACI's as well.)
Thanks, y'all.
Does anyone know whether ACI has any provisions for concrete cover for water tight concrete? Section 7.7 of ACI provides for concrete protection for reinforcement in cast-in-place concrete and precast concrete. Section 7.7.5 also provides for corrosive environment. But how about water tight concrete? Is there a specific provision for that.
I am doing a review of some notes for drawings, and there seems to a set of concrete cover for water tight concrete, that seem to be slightly more stringent than ACI's concrete protection for reinforcement. (generally, about 1/2 an inch more than ACI's, but sometimes similar to ACI's as well.)
Thanks, y'all.






RE: Concrete Cover for Water Tight Concrete
RE: Concrete Cover for Water Tight Concrete
Cover is a minimum of 2" for walls.
For beams, 2" to stirrups and 2.5" to primary reinforcement.
RE: Concrete Cover for Water Tight Concrete
Also, limit the w/c ratio. w/c=.39 isn't unreasonable with a super plasticizer. Finally, look at Xypex as a coating to reduce leakage, or there are some crystaline admixtures that swell in contact with water and eliminate leaks.