Translucent concrete, also known as transparent concrete or litracon, is a building material that allows light to pass through due to embedded optical fibers. The manufacturing process involves pouring layers of concrete interspersed with optical fibers, resulting in various applications such as facades, load-bearing walls, and decorative furniture. While it offers aesthetic and energy-saving benefits, the material is costly and requires skilled labor for production.

1. SEMINAR
ON
T
RANSL NT
UCE
CONCRE E
T
BY
SHASHANK R JAVALAGI
7TH SEM CV
NIE, MYSORE

2. CONTENTS
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INTRODUCTION
MATERIAL USED FOR TRANSLUCENT
CONCRETE
PRINCIPLE
MANUFACTURING PROCESS
APPLICATIONS
ADVANTAGES AND DISADVANTAGES
CONCLUSION
REFERENCES

3. INTRODUCTION
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Translucent concrete is a concrete based building
material having light-Transmissive property.
Light-Transmissive property is mainly due to
uniform distribution of high numerical aperture
Plastic Optical Fibres (POF) throughout its body.
Hence it is also known to be transparent concrete,
LiTraCon.

4. MATERIAL USED FOR TRANSLUCENT
CONCRETE
The two basic materials used for making
transparent concrete
1. Fine concrete
2. Optical fibres
 Fine concrete: Consists of cement and
fine aggregate such as sand.
 Optical fibres: There are 3 kinds
I. Multimode graded-index fibre
II. Multimode step-index fibre
III. Single-mode step-index fibres.
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5. PRINCIPLE
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Translucent concrete works Based on
“Nano-Optics”.
These fibres passes as much light when
tiny slits are placed directly on top of each
other. Hence optical fibers in the concrete
act like the slits and carry the light across
throughout the concrete.

6. MANUFACTURING PROCESS
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The manufacturing process of
transparent concrete is almost same as
regular concrete.
Small layers of the concrete are poured
into the mould and on top of each
layers, a layer of fibres is infused.
Fabric and concrete are alternately
inserted into moulds at intervals of
approximately 2 mm to 5mm.

7. MANUFACTURING PROCESS
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Light-transmitting concrete is produced by
adding 4% to 5% optical fibres by volume
into the concrete mixture.
The concrete mixture is made from fine
materials and does not contain coarse
aggregate.
Thousands of strands of optical fibres are
cast into concrete to transmit light
Smaller or thinner layers allow an
increased amount of light to pass through
the concrete.

8. MANUFACTURING PROCESS
PRODUCT
LITRACON - LIGHT
TRANSMITTING
CONCRETE
Form
Prefabricated blocks
Ingredients
96% concrete, 4%
optical fibre
Density
2100-2400 Kg/m3
Block size
600mm x 300mm
Thickness
25-500mm
Colour
White, Grey or Black
Fibre distribution
Organic
Finished
Polished
Compressive strength 50 N/mm2
Bending Tensile
strength
7 N/mm2
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The casted material is
cut into panels or blocks
of the specified
thickness and the
surface is then typically
polished, resulting in
finishes ranging from
semi-gloss to highgloss.

9. APPLICATIONS
Transparent
concrete blocks
suitable for floors,
pavements and
load-bearing walls.
 Facades, interior
wall cladding and
dividing walls based
on thin panels.
 Partitions wall and it
can be used where
the sunlight does not
reach properly.
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10. APPLICATIONS
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In furniture for the decorative and
aesthetic purpose.
Light sidewalks at night.
Increasing visibility in dark subway
stations.
Lighting indoor fire escapes, in the
event of a power failure.
Illuminating speed bumps on
roadways at night.

11. ADVANTAGES
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Energy saving can be done by utilization
of transparent concrete in building.
It has very good architectural properties
for giving good aesthetical view to the
building.

12. DISADVANTAGES
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The concrete is very costly because of
the optical fibres.
Casting of transparent concrete block is
difficult for the labour so special skilled
person is required.

13. CONCLUSION
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Transparent concrete can be developed by adding
optical fibre or large diameter glass fibre in the
concrete mixture.
It has good light guiding property and the ratio of
optical fibre volume to concrete is proportionate to
transmission of light.
It doesn’t loose the strength parameter when
compared to regular concrete and also it has very
vital property from the aesthetic point of view.
This new kind of building material can integrate the
concept of green energy saving

14. REFERENCES
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Victoria Bailey, “Translucent Concrete”,
MEEN
en.wikipedia.org/wiki/Translucent_concr
ete
wikipedia.org/wiki/Optical_fiber
byen.wikipedia.org/wiki/LiTraCon
www.litracon.hu/

15. THANK YOU