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geopolymer concrete full report
08-02-2010, 07:34 AM
Post: #1
geopolymer concrete full report
GEO POLYMER CONCRETE-Concrete without cement

Whatâ„¢s wrong with cement concrete?

Many concrete structures deteriorate after 20 years.

Cement production releases high amounts of CO2 to the atmosphere(1tonne of cement production releases 1tonne of CO2) thus contributing to 7% of world CO2 emissions.

Cement is one of the most energy intensive material.

How to reduce the use of cement

Partially replace the use of cement in concrete.
example: high volume fly ash concrete

Develop alternate materials.
example:Geopolymer concrete

Geopolymer Concrete

Hardened cementitious paste made from flyash and alkaline solution.
Combines waste products into useful product.
Setting mechanism depends on polymerization.
Curing temp is between 60-90 degree celcious.


Source materials :
Alkaline liquids
combination of sodium hydroxide (NaOH) or potassium hydroxide (KOH) and sodium silicate or potassium silicate.

2.Geopolymer Concrete :Process

Alkaline solutions induce the Si and Al atoms in the source materials ,example fly ash , to dissolve.

Gel formation is assisted by applying heat.

Gel binds the aggregates ,and the unreacted source material to form the Geopolymer concrete.


Cutting the worldâ„¢s carbon.
The price of fly ash is low.
Better compressive strength.
Fire proof.
Low permeability.
Excellent properties within both acid and salt environments.

4.Applications of GPC

Pre-cast concrete products like railway sleepers,electric power poles etc.

Marine structures

Waste containments etc..


The reduced CO2 emissions of Geopolymer cements make them a good alternative to Ordinary Portland Cement.

Produces a substance that is comparable to or better than traditional cements with respect to most properties.

Geopolymer concrete has excellent properties within both acid and salt environments
Low-calcium fly ash-based geopolymer concrete has excellent compressive strength and is suitable for Structural applications.

10-06-2010, 11:18 AM
Post: #2
RE: geopolymer concrete full report
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12-09-2010, 07:12 PM
Post: #3
RE: geopolymer concrete full report
1.Can you give me a brief description on the preparation of geopolymer?
2.Geopolymerisation process(what is the necessity of temperature of 60-80c)if possible some pics
3.Is the cost of geopolymer more or less compared to ordinary cement?
4.Is it in use now?if so where?one example

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