Geopolymer Concrete

Geopolymer concrete is made by waste materials such as fly ash or slag from iron and metal production are used, which helps lead to a cleaner environment. The use of this concrete helps to reduce the wastes and also reduces carbon emission by reducing Portland cement demand.

Composition of Geopolymer Concrete

  • Fly ash
  • GGBS
  • Fine aggregates and
  • Coarse aggregates
  • Catalytic liquid system (CLS): It is an alkaline activator solution (AAS) for GPCC.  It is a combination of solutions of alkali silicates and hydroxides, besides distilled water.

Application of Geopolymer Concrete

  • Construction of Pavement
  • Retaining walls
  • Water tanks
  • Precast Bridge deck

Properties of Geopolymer Concrete

Mechanical property of Geopolymer Concrete

  • Geopolymer concrete will get its strength faster than Ordinary Portland cement concrete. Compressive strength of Geopolymer Concrete have been found up to 70 MPa.

 Other Properties of Geopolymer Concrete

  • Heat of hydration is low compared to other cement concrete.
  • It has very low permeability thus corrosion of reinforcement steels can be avoided compared to other cement concrete.
  • Drying shrinkage is much less compared to other cement concrete therefore thick and heavily restrained concrete structures can be made.
  • This concrete has found very high acid resistance under exposure of 2-10% of sulphuric acids.

It has good fire resistance compared to OPC based concrete.

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Blog Written by
Shruti Doshi
Technical Officer – Sanghi Cement & Blogger
shrutidoshi.1492@gmail.com


Blog Managed by
Nirav Pandya
Digital Marketing Officer – Sanghi Cement
nirav.pandya@sanghicement.com

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