It is a small presentation, which should be studied or seen in the first lecture of R.C.C. It tells about why to and where to use R.C.C. It is acquainted with some pictorial descriptions.
2. INDEX
• WHAT IS RCC ?
• WHY RCC AND WHY STEEL IS USED IN IT?
• PROPERTIES OF GOOD RCC
• WHERE TO USE RCC ?
• REFERENCES
3. WHAT IS RCC?
FULL FORM: REINFORCED CEMENT CONCRETE
RCC stands for Reinforced Cement Concrete, which is when plain
cement concrete (mixture of cement, sand & aggregate) is
reinforced with steel bars.
• How it differs from pcc (plain cement concrete)
Plain cement concrete is mixture of sand, cement and aggregate
and reinforced cement concrete (rcc) is mixture of sand cement
and aggregate including Steel.
REINFORCED: ACCORDING TO OXFORD UNIVERSITY;
REINFORCED
MEANS TO MAKE IT STRONGER.
4. Why steel is used?
• In reinforced cement concrete, the steel (rebar)
carries all of the tensile stresses and, in some
cases some of the compressive stresses also.
• Concrete is good in resisting compression but is
very weak in resisting tension. Hence steel is
provided in the concrete wherever tensile stress
is expected. As the elastic modulus of steel is
high, for the same extension the force resisted by
steel is high compared to concrete.
5. PROPERTIES OF GOOD RCC
• It should be capable of resisting expected
tensile, compressive, bending and shear
forces.
• It should not show excessive deflection and
spoil serviceability requirement.
• There should be proper cover to the
reinforcement, so that the corrossion is
prevented.
6. • The hair cracks developed should be within
the permissible limit.
• It is a good fire resistant material.
• When it is fresh, it can be moulded to any
desired shape and size.
• Durability is very good.
• RCC structure can be designed to take any
load.
7. DEMERITS OF RCC
• R.C.C. structures are heavier than structures of
other materials like steel, wood and glass etc.
• R.C.C. needs lot of form-work, centering and
shuttering to be fixed, thus require lot of site
space and skilled labour.
• Concrete takes time to attain its full strength.
Thus, R.C.C. structures can’t be used
immediately after construction unlike steel
structures.
8. USES OF RCC
1. IN STRUCTURAL ELEMENTS
i. Footings
ii. Columns
iii. Beams and lintels
16. 5. IN TALL STRUCTURES
i. Multistory buildings
ii. Chimneys
iii. Towers
17. RCC IN TALL BUILDINGS RCC IN CHIMNEYS AND
TOWERS
18. 6. IN PAVING
i. Roads
ii. Airport
7. RCC is used in building atomic plants to
prevent danger of radiation. For this purpose
rcc wall built are 1.5 m to 2.0 m thick.
