READ THIS POST ON CONCRETE BEFORE YOUR INTERVIEW????
- Er. Abhishek Singh
- Apr 28, 2018
- 1 min read
Concrete can be planned either as a Design mix or a Nominal mix.
Design mix is more accurate since each of the constituents has been properly tested in the laboratory.
the Nominal mix is basically an imperial method of design. It assumes that the cement is of Grade 33 whereas now a days , this grade is not manufactured.
What we see at site is either Grade 43 or Grade 53 OPC .
Concrete and water is yet another topic where we need to focus.
Remember one thing : Strength of concrete and water added in the concrete are inversely proportional to each other.
Workability is one word which needs clarity.
It is the ease with which you can place or finish the concrete.
Workability means the flow of concrete.
The flow of concrete can be measured by the slump value.
Concrete can be manufactured at the site or it can ordered directly from a batching plant which is also known as a ready mix concrete plant or RMC plant.