What is the difference between nominal mix and design mix?
- 13 Answers
- 72412 Views
- I also Faced
- E-Mail Answers
Answer Posted / harshal.s.khode
Nominal mixes are those proportioned by the volume of the
main ingredients and usually written in order of the
ingredients thus Cement:Sand: Coarse aggregate (stone,
chippings). So a 1:3:6 is a nominal mix containing 1 volume
of cement, 3 volumes of sand and 6 volumes of coarse
aggregate.
Gauge boxes are generally used to batch the ingredients.
The problem with these types of mixes is that the quality
of the concrete is entirely dependant on the quality of the
materials. In other words, if you use the same gauge boxes
to weigh ingredients from different sources, you will most
likely have different concrete qualities.
Designed mixes on the other hand are specified as a grade
the producer of the concrete has to achieve usually in
terms of compressive strength but may include other
criteria (size of the stone, minimum amount of cement,
flexural strength, air content etc). So a grade 30 concrete
will be the same whether batched in Kansas City, Karachi,
Kingston-Upon-Hull or Kinshasa
| Is This Answer Correct ? | 30 Yes | 3 No |
Post New Answer View All Answers
What is geopolymer based concrete?
Give me an example of a time when something you tried to accomplish and failed.
how do you calaculate the total steel quantity of an rcc building using thumb rule?
i am laying a base of dimensions 6.5feet by 7feet by 1.25 feet depth how many bags of 25kg cement and how many bags of 25kg sand will i need
What is min thickness,min grade of conc & age of PQC ?
what are the proper pipes for salt water line
TO CONSTRUCT A 1800 SQFT CAPACITY UNDERGROUND WATER TANK HOW MUCH CUFT CONCRETE IS REQUIRED AND HOW MUCH REINFORCEMENT IS REQUIRED. FOR COSTING
natucher of concrete &type of concrete?
sir, whitch is the best book (writer name) for prepration of gate....
in 2 way slab can additional compressive reinforcement can be provided if yes than in which conditions it is required ?
how to calculate the size of triangular ring in rcc column?
what is the Asfalt test?in road constraction..?
Why do we not deduct steel volume to find actual volume of concrete in practical as we have studied that,,, actual volume of concrete = volume of column- volume of steel pls explain with reference of IS code?????
what is civil all interview questions
how to convert sand in Cft to Kgs
