Seminar of Special Concrete

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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

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Seminar of Special Concrete