What are the property of concrete?

Concrete has strength, durability, versatility, and economy. It can be placed or molded into virtually any shape and reproduce any surface texture.

What is the elasticity of concrete?

The modulus of elasticity of concrete is relatively constant at low stress levels but starts decreasing at higher stress levels as matrix cracking develops. The elastic modulus of the hardened paste may be in the order of 10-30 GPa and aggregates about 45 to 85 GPa.

What is the modulus of elasticity of reinforced concrete?

14 – 41 GPa
Modulus of elasticity – E : 14 – 41 GPa (2 – 6 x 106 psi) Permeability : 1 x 10-10 cm/sec.

What are mechanical properties of concrete?

Performance of concrete is evaluated from mechanical properties which include shrinkage and creep, compressive strength, tensile strength, flexural strength, and modulus of elasticity.

Why is reinforced concrete used?

Reinforced concrete is used for construction on a large scale, such as bridges, dams, piers, tall buildings and stadiums. It is most commonly used in domestic construction for the footings and foundations of smaller everyday dwellings.

How does reinforced concrete work?

reinforced concrete, concrete in which steel is embedded in such a manner that the two materials act together in resisting forces. In reinforced concrete, the tensile strength of steel and the compressive strength of concrete work together to allow the member to sustain these stresses over considerable spans.

What are durability properties of concrete?

Durability of concrete may be defined as the ability of concrete to resist weathering action, chemical attack, and abrasion while maintaining its desired engineering properties.

What are durability properties?

Durability is defined as the ability of a material to remain serviceable in the surrounding environment during the useful life without damage or unexpected maintenance.

Why is concrete reinforced with steel?

Reinforced concrete, Concrete in which steel is embedded in such a manner that the two materials act together in resisting forces. The reinforcing steel—rods, bars, or mesh—absorbs the tensile , shear, and sometimes the compressive stresses in a concrete structure.

What are the physical properties of cement?

The physical properties of good cement are based on: Fineness of cement. Soundness. Consistency. Strength. Setting time. Heat of hydration. Loss of ignition.

How is concrete reinforced?

Concrete is often reinforced with steel. A steel support is made by joining steel bars or cables together and this is then usually surrounded by a mould. Concrete is poured into the mould, where it fills the gaps in the steel support and sets hard. Reinforced concrete is an example of a composite material.

What is fibre reinforced concrete?

Fibre-reinforced concrete (FRC) is concrete containing fibrous material which increases its structural integrity. It contains short discrete fibres that are uniformly distributed and randomly oriented. Fibres include steel fibres, glass fibres, synthetic fibres and natural fibres – each of which lend varying properties to the concrete.