CONCRETE TECHNOLOGY

1. •RITANKAR SAHA 2012-2016
•DR B.C ROY ENGINEERING COLLEGE
•CIVIL ENGINEERING DEPT
ADVANCEMENT IN CONCRETE
TECHNOLOGY

2. INTODUCTION
 What is concrete technology?
 Technology dealing :
1. making concrete.
2. Casting concrete.
3. Ensuring efficient casting.
 Components of concrete :
1. Cement.
2. Fine aggregate.
3. Coarse aggregate.
4. Admixtures.
5. Water.

3. EARLY HISTORY OF CEMENT
 In ancient times, Egyptian mainly used material
obtained by burning gypsum.
 Greeks and Romans used material obtained by
burning limestone.
 First cement was invented by JOSEPH ASPIDIN
on 21st October 1824.

4.  First cement was started in Portland in England.
 In India, cement was first manufactured by South
Indian
Industrials Ltd. In the year 1904.
 Next generation was started by Indian Cement co
Ltd.(1912-1913)

5. MANUFACTURE OF
CEMENT
 Two ways of manufacture of cement.
1. Dry process.

6. 2 . Wet process.

7. TYPES OF CONCRETE
 CLASSIFICATION OF CONCRETE ACCORDING
TO THE DESIGN OF CONCRETE:
1. Plain cement concrete.
2. Reinforced cement concrete.
3. Pre-stressed concrete.

8. PLAIN CEMENT CONCRETE
 Concrete having no reinforcement
 Also called mass concrete
 Strong in taking compression.
 Weak in taking tension.

9. USE OF PLAIN CEMENT
CONCRETE
 PCC or Plain cement concrete is mainly used in foundation
work and flooring work.
FLOORING WORK FOUNDATION WORK

10. REINFORCED CEMENT
CONCRETE
 A advance type of concrete was first used or
developed in 19thcentury in France by an French
industrialist called FRANCOIS COIGNET.
 This concrete was able to take compressive strength
successfully along with high tensions .
 Plain cement was reinforced with MS or TOR steel and
TMT bars.

11.  This type of concrete was economic and reduced the
cross-section of the member components.
 This concrete was previously used but as a reinforcing
material as some other flexible or ductile material.
STEEL RCC
BAMBOO RCC

12. PRE-STRESSED CONCRETE
 As the name suggest that a initial load is given to the member
prior to use.
 Pre-stressing reduces the effect of tension.
pre-stressing
process
 The concept of pre-stressing was invented centuries ago when metal
bands were wound around wooden pieces (staves) to form a barrel.

13. USE OF PRE-STRESSED
CONCRETE
Used in highway construction.
Used in making
bridge.
•
Used in railway sleepers