Evaluating shear strength of sand- ggbfs based geopolymer composite material

Alaa Hussein Jassim Al-Rkaby

Evaluating shear strength of sand- ggbfs based geopolymer composite material

Číslo: 4/2019
Periodikum: Acta Polytechnica
DOI: 10.14311/AP.2019.59.0305

Klíčová slova: Geopolymer; ground granulated blast-furnace slag; sand; drained triaxial strength, unconfined compression strength

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Anotace: Geopolymer has been emerging as a novel and sustainable replacement for the traditional soil improvement materials, such as ordinary Portland cement OPC and lime, which have severe environmental impacts. In this paper, a series of unconfined compression and triaxial tests were conducted on sand and sand - ground granulated blast-furnace slag (GGBFS) based geopolymer. A solution of sodium silicate and sodium hydroxide was employed for the geopolymerization process. Results revealed that adding the GGBFS resulted in a significant increase in the strength properties. This result indicates that geopolymer acted as a cementation agent, providing better bonding between the sand particles and consequently improving the performance of the treated sand.