Advantages of Design mix concrete over nominal mix
Nominal Mix:
Vary widely in strength due to less or more mix
in coarse and fine aggregate and another main factor it is
not economical
design mix:
Designed by the engineers, not much vary in
strength and it is economical nominal mix is Prescriptive type,means its
ingrediant ratio is fixed,more over the other parameters
like maximum size of Aggregate,w/c ratio, type of cement
etc.are also fixed,aiming that adherence to such
prescriptive specification will result in satisfactory
performance.
On the other hand, Design mix is Performance based
concrete,where the properties of concrete like
strength,workability,durability etc. are specified and
ingredients ratio,maximum size of aggregate,type of cement etc is user's choice.
Answered by
Haseeb Jamal
at
May 1, 2010 10:55 AM
