Based on Cementing material
1- Lime concrete
2- Gypsum concrete
3- Cement concrete
Based on Place of casting
1- In situ concrete
2- precast concrete
Based on Bulk density
1- Heavy concrete
2- Dense concrete
3- Lightweight concrete
4- Extra lightweight concrete
Based on Cementing material
1- Lime concrete
2- Gypsum concrete
3- Cement concrete
Based on Perspective specifications
Nominal Mix
Nominal mix specifies the proportion of the cement, sand and aggregates without making a special effort to know their individual properties. Nominal mix has Volumetric batching.
The proportions of materials for nominal mix shall be in accordance with Grade Proportions C: FA: CA
| Grade of concrete | M5 | M7.5 | M10 | M15 | M20 | M25 |
| Mix proportion | 1:5:10 | 1:4:8 | 1:3:6 | 1:2:4 | 1:1.5:3 | 1:1:2 |
| Characteristic compressive strength | 5 | 10 | 10 | 15 | 20 | 25 |
Based on Performance-oriented specifications
Design mix concrete
( From M30 onwards we need to design the concrete mix)
The concrete mix produced under quality control keeping in view the strength, durability, and workability is called the design Mix.
• Others factors like compaction equipment’s available, curing method adopted, type of cement, quality of fine and coarse aggregate etc. have to be kept in mind before arriving at the mix proportion.
• The design mix or controlled mix is being used more and more in variety of important structures, because of better strength, reduced variability, leaner mixed with the consequent economy, as well as the greater assurance of the resultant quality.
Eg:- M30, M35, M40, M45, M50, M55 etc
Special concrete
Special concrete is defined as “concrete which meets special performance an uniformity requirements that cannot always be achieved routinely by using only conventional materials and normal mixing, placing and curing practices”.
Types of special concrete
1- High Volume Fly Ash Concrete.
2- Silica fume concrete.
3- GGBS, Slag based concrete.
4- Ternary blend concrete.
5- Lightweight concrete.
6- Polymer concrete.
7- Self Compacting Concrete.
8- Coloured Concrete.
9- Fibre-reinforced Concrete.
10- Pervious Concrete.
11- Water-proof Concrete.
12- Temperature Controlled Concrete.
