RCC Components, Ratio, Uses and its Requirement

RCC

• RCC stands for Reinforced Cement Concrete.
• When reinforcement is used in PCC, to increase the strength of concrete, is termed as RCC.
• RCC is the most commonly used utilized construction material.
• It is measured in Cubic metre (Cum).

WHY RCC IS USED?

• As concrete is very high in compressive strength, but its low in tensile strength. Concrete will brittle under tensile forces.
• So where tensile forces act on concrete surfaces, concrete is combined with highly tensile materials like steel bars, plates etc. A good construction material is obtained that is capable to withstand all the three forces i.e., Tensile, Compression and shear.

COMPONENTS AND RATIO

Reinforcement (in the form of Bars/Plates), Cement, Fine Aggregates and coarse Aggregates.

Ratio of Cement, fine aggregates and coarse aggregates depends on the required strength;

M10     1 : 3 : 6

M15     1 : 2 : 4

M20     1 : 1.5 : 3

M25     1 : 1 : 2

“M” denotes for the ‘Mix’ followed by a number representing the compressive strength of that mix in N/mm² after 28 days.

REQUIREMENTS AND USES OF RCC?

• RCC structures are durable, resistant to fire, easily available, easily workable and economical.
• RCC structures need less repairing cost.
• RCC can be easily moulded into desired shapes.
• It is high in compressive strength (due to concrete).
• It is high in tensile strength (due to reinforcement).

POSITION OF REINFORCEMENT?

• As reinforcement is used to withstand tensile forces, it is used in tensile zone of Concrete structures.