The document summarizes different types of specialized concretes discussed in a civil engineering seminar. It describes translucent concrete made with optical fibers, green concrete using recycled materials, geo-polymer concrete made from industrial wastes, bacterial self-healing concrete, bendable engineered cementitious composite, pervious concrete without fine aggregates, vacuum concrete where excess water is removed, and cellular lightweight concrete made with a foam agent. Each type is defined and its composition, properties, advantages, and applications are outlined.

1. SEMINAR
CIVIL ENGINEERING DEPT.
PSIT COE KANPUR
TOPIC
“SPECIAL TYPES OF CONCRETE”
BY-ANKIT SRIVASTAVA

2. .
•Concrete is the second most consumed
substance on earth.
•The relation between a doctor and medicine is
same as to the relation between a civil engineer
and concrete.
• The making of concrete is an art as well as
a science.

3. special TYPESOF CONCRETE
1.TRANSLUCENT CONCRETE
2.GREEN CONCRETE
3.GEO-POLYMER CONCRETE
4.BACTERIAL CONCRETE
5.BENDABLE CONCRETE
6.VACUUM CONCRETE
7.CELLULER CONCRETE
8.PERVIOUS CONCRETE

4. TRANSPARENT/TRANSLUCENT CONCRETE
1. It Has The “Light Transmissive Property "which Is Mainly Due To The Uniform
Distribution Of High Numerical Aperture Plastic Optical Fiber (POF) Throughout
Its Body.
2. Basic Material Are Fine Aggregate ,Cement And POF.
3. It Has very Good Architectural Property For Giving Good Aesthetical view To
Building.
4. Costly Because Of Optical Fiber And Skilled Labour.
5. Used where sunlight does not reach properly.

5. 1.The transparent concrete does not loose strength parameter when compared to
regular concrete.
2.It is ecofriendly because it saves electricity during day (the sun light passes
through it and create brightness.)
3.It is made in mould using Portland cement and optical giber as reinforcement.

6. GREEN CONCRETE
•Concrete which is made from concrete wastes
that are eco-friendly are called as “Green
concrete".
•It Uses Less Energy In Production And Produce
Less C02

7. Materials for Green Concrete
• Coarse Aggregates are:
1.Fresh local aggregate 3. recycled demolition waste
2.Recycled Concrete Material (RCM) 4. blast furnace slag (BFS)

8. Materials for Green Concrete
Fine aggregates
1.Manufactured sand for cement 2. recycled glass aggregate
4.Blast furnace slag 3. fly ash

9. ADVANTAGE
1.Easier Handling,
2.Green Concrete Uses Local And Recycled Materials In
Concrete.
4.The Heat Of Hydration Of Green Concrete Is
Significantly Lower Than Traditional Concrete.
5.No Environmental Pollution And Sustainable
Development.
6. Flexural Strength And Compressive Strength Is Equal
To The Conventional Concrete.

10. GEO POLYMER CONCRETE.
• Geopolymer cement concrete is made from utilization of waste
materials such as fly ash and ground granulated blast furnace
slag(GGBS). Fly ash is the waste product generated from thermal
power plant and ground granulate blast furnace slag is generated as
waste material in steel plant.
• Use of geopolymer reduces the demand of Portland cement which is
responsible(5%) for high CO2 emission.

11. OPC vs GEO POLYMER
1. Geopolymer concrete (GPC) using “fly ash”
2. Greater corrosion resistance,
3. Substantially higher fire resistance (up to
2400° F),
4. Greenhouse gas reduction potential as
much as 90 percent when compared with
OPC.

12. PREPRATION
Aggregate Fly ash
Alkaline activator
(NaOH + Na Silicate)
GeopolymerisationStorage

13. Bacterial concrete or self healing concrete
1. Self-healing concrete is a result of biological reaction
of non-reacted limestone and a calcium based
nutrient(Calcium Lactate) with the help of harmless
bacteria (Bacillus) to heal the cracks appeared on
the building.
2. It fills up the cracks developed in structures by the
help of bacterial reaction in the concrete

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• .

16. BEndable concrete
1. It Is Special Type Of Concrete That Can Take The Bending Stresses. It Consist
Of Special Type Of Materials That Makes It Flexible. Its Engineering Name Is
Engineered Cementitious Composite(ecc). It Exhibits The Property Of A Ductile
Material Instead Of A Brittle Material Which Is Shown By The Conventional
Concrete.

17. .
• .

18. .
1. It has the ability to bend like a metal
2. The use of steel reinforcement is reduces and can be eliminated.
3. It has a high initial cost and less compressive strength as compared
to conventional concrete.
Material used
1. Fiber reinforcement
1. Superplasticizer
2. Fine sand

19. PERVIOUS CONCRETE OR NO FINE CONCRETE
• Pervious concrete uses the same materials as conventional concrete,
with the exceptions that the fine aggregate typically is eliminated
entirely, and the size distribution (grading) of the coarse aggregate is
kept narrow, allowing for relatively little particle packing.
• It allows water from precipitation and other sources to pass directly
through, thereby reducing the runoff from a site .

20. .
• .

21. .
• Aggregate, Little To No Fine Aggregate, And
Insufficient Cement Paste To Fill Voids In The Coarse
Aggregate.
• Produces A Concrete With A High Volume Of Voids
(20% To 35%)
• Pervious Concrete Is Used In Hydraulic Structures As
Drainage Media, And In Parking Lots, Pavements
• Pervious Concretes Have Also Been Used In Tennis
Courts And Greenhouses.
• Drainage Rates Commonly Range From 100 To 900
Lit.Per Minute Per Square meter.

22. Vacuum concrete
• Vacuum concrete is the type of concrete in which the excess water is
removed for improving concrete strength. The water is removed by
use of vacuum mats connected to a vacuum pump.
• In this technique, the excess water after placement and compaction
of concrete is sucked out with the help of vacuum pumps. This
technique is effectively used in industrial floors, parking lots and
deck slabs of bridges etc.

23. .
•Technique and Equipment for Vacuum Concrete:
• The main aim of the technique is to extract extra water from concrete
surface using vacuum dewatering. As a result of dewatering, there is
a marked reduction in effective water-cement ratio and the
performance of concrete improves drastically. The improvement is
more on the surface where it is required the most.
• Mainly, four components are required in vacuum dewatering of
concrete, which are given below:
• Vacuum pump
• Water separator
• Filtering pad
• Screed board vibrator

24. Cellular concrete
• Cellular Lightweight Concrete (CLC) also known as Foamed concrete is
one of the most significant type of concrete used for construction
purposes due to its various advantages and usages over traditionally
produced concrete.
• Foamed concrete is manufactured by mixing Portland cement, sand,
fly ash, water and preformed foam in varied proportions. Cellular
lightweight concrete can be produced at building sites using machines
and molds devised for normal concrete at ambivalent conditions.

25. .
Advantages of Cellular Lightweight concrete:
• Lightweight
• Fire resistant
• Thermal insulation
• Sound absorption and Acoustical Insulation
• Environmental Friendly
• Cost-efficient
• Termite proof and resistant towards freezing issues.
Important constituents of cellular lightweight
concrete are:
1.Foam,
1.Fly ash, and
3.Cement

26. APPLICATION
• Cellular lightweight concrete is utilized as thermal insulation in the
form of bricks and blocks over flat roofs or non-loading walls.
• Bulk filling by applying relatively low strength material for old sewer
pipes, wells, unused cellars and basements, storage tanks, tunnels
and subways.
• Production of heat-insulated light wall panel.
• Maintain Acoustical balance of concrete.
• Manufacture cement and plaster-based light plate.
• Application in the bridge to prevent freezing.
• Utilized for tunnel and shaft filling and lightweight concrete
manufacturing.

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CIVIL