INTRODUCTION
Roller compacted concrete, or RCC, is a widely known term in the construction industry. It is a dried mix of basic ingredients used in conventional concrete like water, cement, and aggregates like gravel or crushed stone, but in different proportions, giving it a zero-slump consistency in its unhardened state.
Nowadays, RCC has become synonymous with strength, durability, and thrift in the construction industry news, as Roller compacted concrete is simply fast and very economical because it is constructed without joints, finishing, steel reinforcement, or dowels. Depending upon the need of the project, the RCC is paved very quickly (60 to 120 meters per hour) and in thin layers ranging from 20 to 30 cm.
Roller Compacted Concrete Design Mix
Roller compacted concrete mix design consists of the following:-
Cement
A cement with low heat generation is recommended in RCC.
Aggregates
Selection of aggregates and aggregates quality is very important. Aggregates shall meet ASTM C33 standards. Aggregates of diameter 76 mm (3 in) are not used as they cause problems in the spreading and compacting of the layer. Aggregates of diameter finer than 75 mm reduce the voids and create a more cohesive mixture.
Mineral Admixture
A large amount of mineral admixtures reduces the cost and adiabatic temperature rise of concrete and increases durability. Class F fly ash, Class C fly ash, slag, and natural pozzolan are used as mineral admixtures.
Chemical Admixture
In RCC, air-entraining and water-reducing admixtures containing a higher volume of paste are used.
Uses of Roller Compacted Concrete
- Roller-compacted concrete is used for pavement on highways and streets because it dries quickly.
- In ports and heavy facilities, heavy containers are pulled, making it best for roller-compacted concrete.
- Busy streets and roads because roller-compacted concrete takes very little time to be paved.
Properties of RCC
The properties of RCC are as follows.
- Tough and durable
- Versatile
- Strong
- High performance without the high cost
- Anti-freezing and thawing
- Sustainable
- CIVIL ENGINEERING ARTICLES
- CIVIL ENGINEERING TUTORIAL
- CIVIL ENGINEERING SOFTWARE
Advantages of Roller compacted concrete
The advantages of RCC are as follows:-
- Durable and fast
- No potholes
- Minimum maintenance is required.
- It can withstand extreme temperatures.
- Resistance to an oil spill and hydraulic fluids.
- Due to the layer placement method, the cost of the framework is minimized.
The design of your skirting board is less important than the material. You can go for a plain panel, yet it will, in any case, add rich energy to your room as long as the variety is correct. In a similar vein, you must also choose the material with care.