Seminar of Special Concrete
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Transcript of Seminar of Special Concrete
5/16/2018 Seminar of Special Concrete - slidepdf.com
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Presentation
submitted to- Amit kumar dhir
submitted by- Govind kumarSection- Jc002
Roll no- A67
Reg. no.- 11114903
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Topic –Special Concrete
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Introduction
To improve the particular propertiesof a special concrete in general
the cement based matrix ismodified in some way.
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Special Concrete
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o ymer concre ecomposites Before discussing the various
types of polymer concrete
composites:1-Monomer
2-Polymer3-Polymerization
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ass ca on opolymer
1- Thermoplastics- These
Polymer have long , linear andparallel chain
2- Thermoset- These polymer
have randomly oriented chainswhich which are cross linked.
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Polymer concrete
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concre e
1-Polymer cementconcrete(pcc)
2-Polymer concrete(pc)3-Partially
impregnated(pi)4-Polymer
impregnated(pic)
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Fiber reinforced
concrete
The poor tensile strength of concreteis due to the development of
such micro-cracks.
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Fiber reinforced
concrete
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Fibers used
1-Natural materials asasbestos,
cellulose , sisal.2-Artifical manufactured
productsas steel , glass , carbon
and polymer etc.
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Fly ash concrete
Fly ash is the one of theresiduce
generated , and comprise thefineparticles that rise with the fluegasses
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Fly ash concrete
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Silica fume concrete
Silica fume is a byproduct of
producing silicon metal orferrosilicon alloys. One of themost beneficial uses for silicafume is in concret.
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Silica fume
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concreting
> Concrete placed during
cold weather will developsufficient strength anddurability to satisfy.
> Intended servicerequirements only if it is
properly produced.
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Cold weather
concreting
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Under water
concreting
Sometimes, water seeps into
the foundation pits duringunderground construction.Normally it can be drained outbefore the foundation concreteis cast.
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Under water
concreting
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Hot weatherconcreting
For the purposes of this data
sheet, hot weather is anycombination of:1- high ambient temperature;
2- low relative humidity;3- high wind speed.
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Hot weather
concreting
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Thankyou