Comparative Study on the Behaviour of Geopolymer Concrete with Hybrid Fibers under Static Cyclic Loading

摘要

Geo-polymer is a latest advancement in which the cement is substituted by an eco-friendly Pozzolanic material. It is activated by a highly alkaline solution to produce aluminosilicate gel which acts as a binder in concrete. In this study cement is fully replaced by Ground Granulated Blast Furnace Slag (GGBFS). Since concrete is fragile steel and glass fibres are supplemented to improve the performance of the concrete. These hybrid fibres are optimised by compression test and split tensile test. The flexural behaviour of the conventional concrete and a geo-polymer concrete is tested under static cyclic loading for the corresponding optimised percentage of hybrid fibres. The experimental test shows significant improvement in the flexural strength, stiffness degradation, cumulative energy dissipation capacity, displacement ductility and the ultimate load with its corresponding deflection.