Living Concrete

1. LIVING CONCRETE

2. INTRODUCTION
 Construction industry in India is an important industry in
the economical development .
 It is responsible for the 10% of the total Gross Domestic
Product of India.
 It act as a second back bone of India next to that of
Agriculture.
 For the agricultural purpose our India had built about
22.48 million hectares to irrigate 58.13 million hectare
land area.
 Most of these canals were made up of concrete which is
very essential for the construction industry.

3. IMPORTANCE OF CANALS
 Power production
 Flood control
 Irrigation for
agricultural lands
 Independence of monsoon
periods

4. CRACKS ON CONCRETE
 Cracks are nothing but the fracture that occurs on the concrete
which may be only at the surface of else it may occur at particular
depth in the concrete.
 Based on their mode of occurrence the cracks are classified as
follows:
1) Plastic shrinkage cracking
2) Plastic settlement cracking
3) Drying shrinkage cracking
4) Concrete crazing
5) Long term shrinkage cracking
6) Thermal cracking
7) Long term shrinkage cracking

5. EFFECT OF CONCRETE
CRACKS IN CANALS
Loss of water
Decreases the durability of the channel
Decreases the power production in the canal
Reduces the agricultural productive
India will fall in economical level.

6. OBJECTIVES OF THE
PROJECT
To identify the causes for the cracks
To rectify those cracks by using some self healing techniques
Arrest the water from canal leakage.
Improving the canals efficiency and agricultural productivity

7. INGREDIENDS OF
LIVING CONCRETE
 Cement
 Sand
 Aggregate
 Living concrete agents

8. LIVING CONCRETE
AGENT
 The living concrete mixture really makes the concrete as a
living one.
 This mixture is a combination of the Calcium lactate and
Bacillus Alkainitrulicus.
 About the bacteria :
 Gram positive bacteria
 Rod shaped
 Can withstand high alkaline conditions
 Capable forming Endospores
 These bacteria has the capacity to convert the calcium lactate
into lime in the presence of water.

9. LIVING CONCRETE
AGENT
 These agents are filled in an micro-capsule.
 The filled capsule are directly put into the concrete mix and the
replacement must be 15Kg per metric cube.
5CO2 + 5Ca(OH)2 -> 5CaCO3 + 5H2O
 Carbon Dioxide + Calcium Hydroxide -> Limestone + Water
Ca(C3H5O2)2 + 7O2 -> CaCO3 + 5CO2 + 5H2O
 Calcium Lactate + Oxygen -> Limestone + Carbon Dioxide + Water

10. CAPSULE
 The capsules are made by stirring together a solution of
water, urea, ammonium chloride and a benzene derivative
called resorcinol that encourages capsule formation.
 Then methacryloxypropyl-terminated is added with
polydimethylsiloxane, benzoin isobutyl ether and
formaldehyde, and cooked the mixture for 4½ hours at
55°C.
 This process causes the urea and the formaldehyde to form,
as desired, capsules containing the two concrete-healing
chemicals.

11. PREPARATION
 The concrete is made with the same procedure as that of the
normal concrete procedure.
 Finally the micro capsules are introduced into the concrete
mix and mixed well.
 Then they can be used in the making of the concrete for the
canals.

12. TESTING FOR THE
CONCRETE
 Take two test of concrete disc of dimensions.
Diameter 18 cm
Thickness 2 cm
Volume 509 cm³
 Both the concrete are made to crack by applying some load.

13.  Then put those cracked circular concrete into the base of the cylinder containing
cylinder.
 Calculate the water leakage
for one hour.
 Compare the Water leakage.
WATER PERCOLATION TEST:
PLACING THE CONCRETE IN CANALS:
 The cracked concrete were placed in a canal
based setup to check the leakage.
 The results showed that the leakage is very much
lass in the living concrete.

14. ADVANTAGES
 Since it fills all the cracks that were formed in the canal in
reduces the water loss in the canals.
 It also helps in achieving more agricultural production.
 Help in more electricity production from canals.
 It reduces the sequential replacement of the concrete in the
canals.

15. DISADVANTAGES
 Since it replaces about 15% of the concrete it has less strength
than that of the actual concrete.
 And the preparation cost is not economical.

16. THANK YOU