What is the difference between nominal mix and design mix?

Answer Posted / alok kumar jha

As per IS-456,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,Designe 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.

Is This Answer Correct ?    69 Yes 10 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

Specific gravity of cement?

1200


what is the composition of good brick ?

1455


trapozidal

2000


Sir how to find cutting length for footing steel bars in the shape of "u"

1315


Bitumen grades are 30-40,60-70, 80-100. what is mean by 30- 40

91491






what is the theoritical percentage of concrete cubes testing per day?

4383


What in your opinion makes you the most suitably qualified candidate for this post of civil engineering technician?

692


Can inverted beams used in pipes during construction?

863


What is the software used in civil engineering?

649


what is meant by residual strain?

1789


sir, please send me the web address of chennai railway to know the online examresults of junior engineer[civil].

1674


what will happen if one could not properly follow the spacing of slab reinforcement bar?

1566


What is the yield of 100 litres of water and 10 kg of cement in grout mix?

1574


What happens when water mixed with cowdung is used for priming instead of water for lifting water in pumps?

1806


What is proportion of PCC Grade G?

1588