RCC concrete | What is RCC | Advantages and disadvantages of RCC | RCC Types

 What is R.C.C?

Reinforced cement concrete, or RCC for short, is a composite material made up of concrete and steel reinforcement. Concrete is weak in tension and powerful in compression, as we all know. As a result, steel reinforcement is used in concrete to increase its tensile strength.

Concrete is a material made of cement, sand, mortar, additives, and other materials that comes in various strength grades in the civil engineering profession. Concrete, as we all know, is quite good at resisting compression but not so good at resisting tension. As a result, where more tensile stress is expected, reinforcements are added to the concrete.

RCC Concrete is created when steel is added to cement concrete. Steel is the most used type of reinforcement. Steel has a high tensile and bond strength compared to other materials, and it also generates strong concrete. Steel has a high modulus of elasticity, which means that for the same amount of extension, it can withstand far more high tensile force than concrete.

Types of Reinforcement Materials used in R.C.C Concrete

Steel reinforcement in the form of reinforcement bars, prestressing wires and strands, rolled steel sections, and light-gauge steel sections are the most common steel forms used in building construction.

Steel bars come in a variety of shapes, grades, and strengths. These steel bars have a defined tensile strength and are used to reinforce concrete to generate good bond strengths, as well as to fabricate grills, gates, and other items.

Mild steel, tor steel, TMT bars, and other reinforcement steels are the most common types on the market. The following types of reinforced concrete steel bars are regularly used in construction.

1.     Hot Rolled Steel

On the market, there are four varieties of hot-rolled steel. Mild steel bars (MS bars) are the first type, which are traditionally made by hot rolling. The bars are formed into a circular shape with a smooth surface after being hot rolled. Mild steel plain bars are another name for these bars.

There are two grades of mild steel bars: grade I and grade II. Grade I mild steel has a little higher carbon content than Grade II mild steel. These bars are more corrosion resistant than tor steel bars.

The second variety, which has ribs on it, is hot rolled mild steel ribbed bars. The bars' binding strength is improved by these ribs. Steel bars with rebars or ribbed bars, which are sometimes confused with HYSD bars, should not be utilised in R.C. projects.

The third type is hot rolled high strength ribbed bars, which are created by hot rolling and obtained through high strength microalloying.

HYSD bars are the fourth category; they are hot rolled high yield strength deformed bars. TMT bars have now taken their place.

2.     Cold Twisted Deformed Bars (Tor steel)

The earliest high-strength bars used in India were cold twisted deformed bars, also known as Tor steel bars. These bars are manufactured from high-grade mild steel that has three or more parallel straight ribs and is hot rolled in the mill.

Steel is easily spotted in the field because its projection resembles a straight line. In cold twisting, they will also create a helical around the bars.

This steel corrodes significantly more quickly than other bars, therefore it is not recommended for usage in many advanced countries.

3.     TMT bars

Thermo-mechanically Treated Reinforcement is abbreviated as TMT. Steel bars with high strength at the surface and a mild steel core can be produced by quick cooling of red hot steel bars with a spray of water.

A fine-grained ferrite-pearlite structure with tempered martensite on the periphery and a fine-grained ferrite-pearlite structure in the core zone can be found at the end of a bar structure. To strengthen the binding strength of TMT bars, ribs (rebars) are added to the manufacturing process.

There is also TMT corrosion resistant steel (CRS) on the market. TMT bars have corrosion resistance due to the incorporation of corrosion-resistant elements such as copper, phosphorous, and chromium.

TMT bars are more corrosion resistant than Tor Steel and are highly recommended for usage in reinforced concrete projects. There are four grades of these bars: Fe 415, Fe 500, Fe 550, and Fe 600.

4.     Welded Wire Fabrics

They are made up of weldmesh made from medium tensile steel taken from mild steel bars of various diameters. The strength of wire textiles is greater than that of mild steel.

These wire textiles are available in a variety of width wire rolls that are commonly used in partitions, fencing, and R.C slab construction.

Properties of Reinforced Cement Concrete

·         It should be able to withstand compression.

·         It ought to have Tensile strength that is sufficient

·         High resilience to fire and the elements

·         It should be made of a long-lasting substance.

·         Any shape can be moulded for a low cost.

·         Low-cost maintenance

·         As a building material, the economy

·         Deflection is reduced.

·         Use as structural components made of precast concrete.

·         Labor that is less skilled

Disadvantages of R.C.C

·         Structures made of R.C.C. are heavier than structures made of other materials such as steel, wood, and glass.

·         R.C.C. necessitates a large amount of formwork, centering, and shuttering to be installed, necessitating a large amount of site area and expert labour.

·         It takes time for concrete to reach its full strength. As a result, unlike steel structures, R.C.C. constructions cannot be used immediately after construction.

R.C.C’s Applications

The following are some of the applications of RCC concrete in construction:

·         Reinforcement The main structural component of a building is concrete. RCC is used to construct the building's primary load-bearing components. Footings, Columns, Beams, Chejjas, Roofs, Slabs, and Stairs are just a few examples.

·         RCC is also used to build water tanks, dams, bins, silos, and bunkers, among other storage buildings.

·         Bridges, retaining walls, docks and harbours, and underwater constructions are all examples of huge infrastructure projects that utilise it.

·         RCC is also employed in the production of precast elements such as railway sleepers and electric poles.

·         It's utilised to make multistory buildings, chimneys, and towers, among other tall constructions.

·         RCC is utilised in the construction of roads and airports.

FAQs

What is RCC?

Reinforced cement concrete, or RCC for short, is a composite material made up of concrete and steel reinforcement. Concrete is weak in tension and powerful in compression, as we all know. As a result, steel reinforcement is used in concrete to increase its tensile strength.

What is RCC in Construction?

RCC is a concrete-and-steel-reinforced composite material used in building. Concrete is weak in tension and powerful in compression, as we all know. As a result, steel reinforcement is used in concrete to increase its tensile strength.

What is meaning of RCC?

Reinforced cement concrete is the full form of RCC. Concrete and steel reinforcement are used to create materials that are both compressive and tensional robust.

What does RCC building means?

The term "RCC building" refers to a structure made of reinforced concrete. Reinforced cement concrete is the full form of RCC. Concrete and steel reinforcement are used to create materials that are both compressive and tensionally robust.

RCC?

Reinforced Cement Concrete, or RCC, is a composite material made up of concrete and steel reinforcement. Concrete is weak in tension and powerful in compression, as we all know. As a result, steel reinforcement is used in concrete to increase its tensile strength.