Geopolymer mortar under-water

Abstract

Geopolymer (GP) concrete is being used and developed considerably by the construction industry due to its eco-friendly characteristics. In this thesis, metakaolin based geopolymer is assessed to find its suitability for underwater applications. This assessment is done by comparing the performance of geopolymer based mortars with others made by cement having the same binder to cement ratios. Results indicate that GP-mortars have greater rheological properties and flow time because of the high viscosity of the alkaline solution. Furthermore, GP mixtures have more ability to resist the washout loss that have contributed directly to the reduction of its residual strength, as compression, flexural and pull-off strengths, while casted beneath the water.