REINFORCED CEMENT CONCRETE
REINFORCED CEMENT CONCRETE
Concrete
is good in resisting compressive stress but is very weak in resiting tensile
stresses. Hence reinforcement is provided in the concrete wherever tensile
stress is expected. The best reinforcing material is steel, since its tensile
strength is high and bond between steel and concrete is good. Since elastic
modulus of steel is quite high compared to concrete, the force developed in
steel is high. A cage of reinforcements is prepared as per the design
requirements, kept in the form work and then green concrete is poured. After
the concrete hardens, the form work is removed. The composite material of steel
and concrete, now called R.C.C. acts as a structural member and can resist
tensile as well as compressive forces efficiently.
Uses of R.C.C.
1. R.C.C. is used as a structural member wherever
bending of the member is expected. The common structural elements in a building
where R.C.C. is used are:
(a) Footing
(b) Columns
(c) Beams,
lintels
(d) Chejjas,
roof slabs
(e) Stairs.
2. R.C.C. is used for the construction of storage
structures like:
(a) Water
tanks
(b) Dams
(c) Silos,
bunkers
3. They are used for the construction of
(a) Bridges
(b) Retaining
walls
(c) Docks and
harbours
(d) Under
water structures
4. R.C.C. is used for building tall structures like
(a)
Multistorey buildings
(b) Chimneys
(c) Towers.
5. R.C.C. is used for paving
(a) High ways
(b) City
roads
(c) Airports.
6.R.C.C. is used in atomic plants to prevent
radiation. For this purpose R.C.C. walls built are as thick as 1.5 m to 2.0 m.
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