This document discusses translucent concrete and bacterial concrete. It defines translucent concrete as concrete that allows light to pass through it due to embedded optical fibers. The manufacturing process and tests for translucent concrete are described. Bacterial concrete is defined as concrete that fills cracks through bacterial reactions. The document discusses the components, manufacturing process, tests, advantages, and disadvantages of both translucent and bacterial concretes. It also compares the costs of conventional versus bacterial concrete. In conclusion, the document notes that civil engineers are working to improve concrete quality and address disadvantages.

1. BY
ANKITH KUMAR TIWARI - 14E31A0104
UNDER GUIDANCE OF
G. ARUNA
ASSISTANCE PROFFESOR
DEPARTMENT OF CIVIL ENGINEERING
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2. CONTENT
 INTRODUCTION
 COMPONENTS
 METHODOLOGY
 DISCUSSION
 COST COMPARSION
 CONCLUSION
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3. INTRODUCTION
 Concrete used since Roman times & misunderstood,
disliked due to the rapid urbanization.
 But since time, concrete progress not only in technical
terms, but also in aesthetic terms. It focuses on green
technology and artistic finish.
 Material satisfy fire warming, environmental
protection and energy saving.
Technique improve the strength, durability, stiffness of
cracked concrete specimens.
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4. DEFINITION
Translucent concrete: Concrete which allow light to pass
through it, also called as light transmitting concrete due to
embedded optical elements.
Work on a principle of “Nano optics”
Bacterial concrete or self healing or self-filling concrete
fills the cracks developed in structures by the help of
bacterial reaction in the concrete after hardening.
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6. COMPONENT
 Cement: It is a binder material.
Grade:33,43,53.
 Fine aggregate: It is filler material.
Impart drainage & strength.
 Coarse aggregate: Impart strength.
size- Greater than 4.75mm.
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7. Optical Fibers Elements:
 Core: Thin glass, center of the fiber where the light travels.
 Cladding: Material surround core & reflects light back to core.
 Buffer Coating: Plastic coating protects cladding from damage
& moisture.
Water:
 Water should be free from acids, oils, alkalies vegetables or
other organic impurities.
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8. MANUFACTURING PROCESS
 Preparation of the Mould: Size 150mm*150mm*150mm
 Optical Fiber:
 Fixing the Fibers: Placing fiber.
 Concreting:
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9.  Removing the Mould: After 24 hrs., removing the mould
and pull off the mud.
 Cutting and polishing: Cut the extra-long fibers.
Polish the panel surface by using polishing paper or
using sand paper.
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10. TESTS ON TRANSLUCENT
CONCRETE
 COMPRESIVE STRENGTH:
 FLEXURE STRENGTH:
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11. USE OF TRANSLUCENT
CONCRETE
Traditional Uses:
 Translucent blocks suitable for floors,
 pavements and load-bearing walls
Emerging Uses/Trends:
 Partitions & Furniture.
 Light sidewalks at night
 Stairs & Decorative Tiles
 Lamps
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12. ADVANTAGES & DISADVANTAGES
ADVANTAGES:
 It has very good architectural properties for giving good
aesthetical view to the building.
 Energy saving can be done by utilization of transparent
concrete in building.
 Finishing surface & routine maintenance not required.
DISADVANTAGES:
 Concrete is very costly because of the optical fibers.
 Skilled person is required.
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13. The common problem found in buildings is Crack:
 Concrete expands and shrinks due to temperature change.
 Settlement of structure.
Due to loss of water from concrete surface shrinkage occurs
 High water cement ratio to make the concrete workable
 Due to corrosion of reinforcement steel.
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14. BEFORE AND AFTER
HEALING
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15. Bacteria used in construction are:
 Bacillus pasteurizing
Bacillus subtilis
 Bacillus cohnii
Bacillus pseudofirmus
Preparation of Bacterial Concrete:
Bacterial concrete can be prepared in two ways,
 By direct application
 By encapsulation in lightweight concrete
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16. TEST
 COMPRESSIVE TEST:
 FLEXURE TEST:
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17. GRAPH
Comparison of Coefficient of water permeability with Grade of Concrete at 28 days
age.
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18. COST COMPARISON
 The cost of self-healing concrete is double that of
conventional concrete.
Conventional concrete : €80 euros per cubic meter.
self-healing concrete: At around €160 per cubic meter.
 Life of the structure can be extended by 30%
1€ euro =79.55 Inr
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19. APPLICATION
 Cement mortar.
 Precast concrete.
 Crack filling material.
 Concrete.
 Brick production.
 Pervious concrete.
 Lining of Dam, Reservoir.
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20. Advantages & Disadvantage of
Bacterial Concrete
Advantages:
 Self-repairing of cracks & more compressive strength and
flexural strength.
 Resistance towards freeze-thaw attacks.
 Reduction in permeability of concrete.
Disadvantages:
 Cost of bacterial concrete is double.
 Growth of bacteria is not good in any atmosphere and
media. Code books not available for design mix.
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21. CONCLUSION
 Thus, environmental aspects are not only interesting
from an ideological point of view, but also from an
economic aspect.
 Civil engineers are trying to improve concrete quality
day by day.
 And civil engineer trying to work on disadvantages
of concrete.
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