Concrete strength Limitation ACI 318
Concrete strength Limitation ACI 318
(OP)
Hi all,
Ref: ACI 318 - 2002
Do we have any restraints in design methodology for using higher strength concrete 15 ksi ?
Thanks in advance
Ref: ACI 318 - 2002
Do we have any restraints in design methodology for using higher strength concrete 15 ksi ?
Thanks in advance





RE: Concrete strength Limitation ACI 318
RE: Concrete strength Limitation ACI 318
Above about 7ksi the concrete stress strain curve strats to vary significantly from the assumed curve in the rectangular stress block. The constants for this must be modified. This is covered in the Canadian code.
Also, creep and shrinkage are very different. There is much more chemical shrinkage and less drying shrinkage.
The concrete is much less ductile and for compression members the ties are much more important.