ACI 318-08 Concrete Testing

[darthsoilsguy2]

my coworker tells me ACI318-08 calls for 3 28-day cylinders instead of 2. wondering if anyone was seeing this hapen yet out there in USA.

 

[conceng]

That is only if you are using 4"x8" cylinders. If you are using 6"x12" cylinders, then only two are required.

Greg

 

[BigH]

And yet it is interesting that most project specifications that I have seen in Asia require 3 specimens for a 28-d strength . . .

 

[msucog]

i still see 2 called out because most specs are 20 years old and never updated. technically the 3 4x8 cylinders was not accepted by ibc unless the eor approved its use. recent adoption (ibc '09) references aci that says "either or" with 2 6x12 or 3 4x8.